巴西专利BR112012011936B1 fluid dispenser, and, fluid dispensing process

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专利摘要:
FLUID DISPENSER The present invention provides an easy-to-maintain dispenser that will dispense an appropriate amount of fluid to effectively clean a user's hands, even if the dispenser has been inactive for a period of time. Also described is a process for dispensing a fluid from the dispenser.
公开号:BR112012011936B1
申请号:R112012011936-2
申请日:2010-10-21
公开日:2021-03-16
发明作者:Paul Francis Tramontina；Richard Paul Lewis
申请人:Kimberly - Clark Worldwide, Inc；
IPC主号:

专利说明:

FIELD OF THE INVENTION
The present invention is generally related to a fluid dispenser. BACKGROUND OF THE INVENTION
Public bathroom users often want all devices in the bathroom to operate automatically without being touched by the user's hands. This desire is usually due to the user's greater knowledge of the degree to which germs and bacteria can be transmitted from one person to another in a public toilet environment. As a result, many public toilets are gradually being transformed into “hands free” or “no touch” bathrooms, where all devices, including toilet and urinal, hand washing taps, soap dispensers, towel dispensers and door opening mechanisms, are automatic and operate without being touched by a user. Many users believe that public toilets with hands-free or touchless facilities reduce the opportunity for transmission of viruses and bacteria that can result from contact with devices in a public toilet.
In office buildings and other similar sophisticated buildings, the building owner or manager often wants to offer public restrooms with sophisticated facilities to match the building's decor. One way the building owner or manager can provide a sophisticated public bathroom is to provide soap dispensers built into the counter, rather than wall-mounted units or dispensers on the counter. Soap dispensers built into the counter usually have a dispensing spout above the counter. Typically, soap dispensers built into the counter have a reservoir, which contains the soap, and pump to move the soap from the reservoir to the spout. The reservoir and the pump are usually mounted under the counter. Soap dispensers built into the counter are known in the art. See, for example, U.S. Patent 6,142,342, U.S.6,467,651 and Patent Application Publication US2009 / 0166381 A1. These dispensers dispense an essentially uniform amount of soap with each pump attenuation located in the dispenser.
Sparkling soaps in recent years are gaining popularity. Sparkling soaps are usually stored in a reservoir as a liquid until the time of dispensing. At the time of dispensing, a foam pump pumps the liquid from the reservoir and the pump converts the liquid into foam. Sparkling soaps tend to be much easier to spread than the corresponding liquid soaps. In addition, foaming soaps result in less soap waste due to splashing or discharge from users' hands, since foaming soaps typically have much higher surface tension than liquid soaps. Sparkling soaps generally give the user the perception of having more soap available for hand washing than an equivalent weight of liquid soap. That is, a sufficient amount of liquid soap to wash a user's hands can give the user the perception that there is an insufficient amount of soap to complete the hand washing event.20 Often, the user will search for one or more additional doses of liquid soap to complete the hand washing event, if the user realizes that the amount of soap dispensed is insufficient to complete the hand washing event. As a result, dispensers that dispense foaming soaps tend to provide more hand washing, on a liquid volume basis of soap in a reservoir, compared to dispensers that dispense liquid soaps.
Sparkling soap dispensers built into the counter are generally of two types. One is a pressurized system, 30 which generates foam at the nozzle. A second type is a non-pressurized system. Pressurized systems are expensive to install and maintain. Non-pressurized systems typically generate foam under the counter and send the foam to an outlet of the nozzle through a tube. A certain amount of foaming soap remains in tube 35 until the next use. However, foams tend to collapse over time and return to liquid form. This process is called liquefaction. When the foamy soap liquefies, the dispenser may not dispense a sufficient amount of the foamy soap to effectively clean the user's hands. Non-pressurized systems have the advantage of lower initial costs and lower maintenance costs.
One way to deal with liquefaction is to dispense more foamy soap than is necessary to clean the user's hands. However, providing too much soap to the user requires the user to use more water to effectively remove the soap from the hands. This can result in waste of water and soap. The waste of water and soap in each hand washing event can result in an increase in operating costs for the building owner.
Another issue in the art is that fluid dispensers that have relatively long dispensing tubes can experience loss of fluid in the dispensing tube during the unused period. This can be caused by many different factors, including, for example, fluid evaporation, leakage of the fluid from the dispensing tube among other reasons. As a result, a dispenser having a dispensing tube may not dispense a sufficient amount of a fluid, in particular a hand cleaning fluid, to effectively clean a user's hands.
There is a demand in the art for a non-pressurized foaming soap dispenser without the use of hands that effectively dispenses a sufficient amount of foaming soap, even if liquefaction or collapse of the foaming soap occurs between uses of the dispenser. Additionally, there is a need in the art for a fluid dispenser that always provides a user with enough fluid to clean a user's hands during a hand washing event. SUMMARY OF THE INVENTION
Generally speaking, the present invention provides an easy-to-maintain fluid dispenser that will always dispense a sufficient amount of fluid, even if the dispenser has been left unused for an extended period of time.
In one embodiment, the present invention provides a fluid dispenser. The fluid dispenser has a reservoir to hold a fluid; a pump having an inlet and an outlet and the pump draws fluid from the reservoir through the inlet, a dispensing tube directly or indirectly connected to the pump outlet; a beak; an engine; an attenuator in communication with the engine; a processor in communication with the engine; and a sensor to detect the presence of a user, and the sensor is in communication with the processor. The nozzle is adapted to receive the dispensing tube and dispense the fluid to a user. The pump is activated by the attenuator, which is driven by the engine. The processor is configured to determine a time interval between dispensing cycles and to activate the engine for one or more cycles, based on the time interval between dispensing cycles. When the sensor detects the presence of a user, the sensor provides a signal (input) to the processor and the processor determines the time between dispensing cycles and provides a signal for the motor to activate for one or more cycles.
In another embodiment of the present invention, the dispenser processor activates the motor for a single cycle, if the time interval between dispensing cycles is less than a predetermined period of time, or for multiple cycles, if the time interval between dispensing cycles is greater than a predetermined period of time. The dispenser of the present invention may also have a return suction mechanism located between the pump outlet and the dispensing tube. The return suction mechanism serves to prevent the fluid remaining in the dispensing tube from dripping from the nozzle between uses.
In one embodiment of the present invention, the pump may be a foaming pump that removes a foam precursor from the reservoir through the inlet. The foaming pump combines a gas with the foam precursor to form a foam.
In another embodiment, a process for dispensing a fluid to a user from a fluid dispenser is provided. This process includes the provision of a fluid dispensing system having a sensor, a motor and a pump. The process detects the presence of a current user requesting a fluid from the dispensing system and determines a period of time between a previous fluid request and the current fluid request. This elapsed time period is 5 compared to a predetermined time period. Then, a motor is activated for a single cycle if the elapsed time period is less than the predetermined time period, or for multiple cycles, if the time lapse is longer than the predetermined time period.
The fluid that can be dispensed in the process and in the dispenser of the present invention can be a liquid soap, a liquid disinfectant, a gel soap, a foaming soap precursor or a foaming disinfectant precursor.
In another embodiment of the present invention, the predetermined period of time is between about 10 minutes and about 6 hours. When the fluid is a soap or foaming disinfectant, the predetermined period of time is correlated with a liquefaction time of the foam. Generally, the predetermined time is between about 10 minutes and about 1 hour, 20 when the fluid to be dispensed is foam from a foam precursor.
In yet other embodiments of the present invention, additional features that may be present in the dispenser include that the nozzle is mounted above the counter via a mounting device that extends across the counter. The present invention may also have a power supply connected to the processor, the sensor and the motor.
In a particular embodiment of the present invention, the multiple cycles are two or three cycles.
In a particular embodiment, in the dispenser and in the process of the present invention, the dispenser dispenses a fluid volume between about 0.45 ml and about 2.0 ml. In a more particular embodiment, the dispenser dispenses a fluid volume between about 0.55 ml and about 0.65 ml.
The present invention provides an easy-to-maintain fluid dispenser that will dispense an appropriate amount of fluid to effectively clean a user's hands, even if the dispenser has been inactive for an extended period of time. BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a fluid dispenser with a reservoir attached to a dispensing portion of the dispenser.
Figure 2 shows a fluid dispenser with a separate top and bottom portion.
Figure 3 shows a cross-sectional view of a pump mechanism usable in the fluid dispenser.
Figure 4 shows a perspective view of the top portion of the dispenser with the lid removed.
Figure 5A shows a front view of an engine power transmission system usable in the present invention. Figure 5B shows a side view of an actuator wheel and an actuator guide member of an embodiment of the present invention.
Figure 5C shows a rear side view of an actuator guide member of an embodiment of the present invention.
Figure 5D shows a top view of an embodiment of an engine power transmission system usable in the present invention.
Figure 6 shows an exemplary wiring diagram 25 usable in a dispenser of the present invention.
Figure 7 shows a flow chart usable in a dispenser of the present invention to determine when multiple cycles are used. DEFINITIONS
It should be noted that, when used in the present invention, the terms "comprise", "comprising" and other derivatives of the root term "comprise" are intended to be open terms that specify the presence of any cited features, elements, integers, steps, or components, and do not intend to exclude the presence or addition of one or more other characteristics, elements, integers, stages, components or groups thereof. DETAILED DESCRIPTION OF THE INVENTION
In the following detailed description of the present invention, reference is made to the accompanying drawings which form a part of it, and which show, by way of illustration, specific modalities in which the invention can be practiced. These modalities are described in sufficient detail to allow those skilled in the art to practice the invention, and it should be understood that 10 other modalities can be used and that mechanical, procedural, and other modifications can be made without departing from the spirit and scope of the present invention. The following detailed description, therefore, should not be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, together with the total scope of equivalents to which such claims are entitled. The dispenser of the present invention can be a counter-built-in dispenser or a dispenser placed above the counter. The dispenser placed above the counter can be a wall-mounted dispenser, such that the fluid is transported to the dispensing nozzle through a dispensing tube between the pump and the nozzle. Generally, however, the present invention will be more useful in counter-top dispensers. Therefore, the present invention will be described in terms of the counter-built-in dispenser 25 which is mounted across the counter in a bathroom or other facility where hand cleaning or disinfection may be necessary. In order to have a better understanding of the present invention, attention is directed to the figures in this report. Figure 1 illustrates an automatic dispensing apparatus 10 of the present invention, mounted on a counter 11 in a typical bathroom installation. As shown, the dispensing apparatus includes a dispensing device 12 having a portion above the counter 14 located adjacent to the basin of a sink 16. As shown, the portion above the counter 14 includes a dispensing head or nozzle 18 having a dispensing nozzle. 20 extending from the dispensing head 18. The dispensing nozzle 20 is positioned and configured in a conventional manner to serve fluid to a user's hand or hands. As shown, the dispensing nozzle 20 is positioned over the sink basin 16, so that, if the fluid is involuntarily dispensed from the dispensing apparatus, the fluid will make its way to the sink basin 16, instead of the counter 11. To dispense fluid from the dispensing apparatus, a user passes his hand or hands below the dispensing nozzle 20, where a sensor 21 detects the user's hand or hands below the dispensing nozzle 20. Suitable usable sensors in the present invention are any 10 types of sensors that detect the presence of a user's hand or hands below the dispensing nozzle 20. An exemplary type of sensor is an infrared (IR) sensor. When the sensor 21 detects the user's hand or hands below the dispensing nozzle, an electronic device is activated and a quantity of fluid is served in the user's hand. The dispensing device 12 includes a portion under the counter 24 having a mounting system 25 that secures the dispensing device 12 on the counter. The mounting system 25 has an elongated tube 26, which is a generally elongated hollow tube, which extends through a defined hole in the counter 11. By "hollow", it is meant that a tube has a passage or channel ( not shown in Figure 1) that extends through the elongated tube 26 from the proximal end 26P of the elongated tube 26, which is located above the counter 11, to the distal end 26D of the elongated tube 26 located under the counter 11. The tube elongated 26 has a flange 23 at the proximal end 26P of the elongated pipe 26, the flange 23 positioned above the counter 11. The flange 23 is of a size that is larger than the hole in the counter 11 and the flange 23 serves to not leave the pipe elongate 26 falls through the counter 11. As 30 is shown in Figure 1, the mounting system 25 also has an anchoring mechanism 28 associated with the portion of the elongated tube 26 that extends below the counter 11. The mounting system shown in Figure 1 is a type of mounting system that can be used in the present invention and is described in more detail in US Patent Application Publication US2009 / 0166381, which is incorporated herein by reference. Note that other types of mounting systems can also be used. For example, the mounting system 25 can be a threaded elongated tube and the anchoring mechanism can be a nut screwed into the threads of the elongated tube (not shown).
The portion under the counter 24 also has a connecting member 30, located at the distal end 26D of the elongated tube 26. The connecting member 30 is removably connected to the distal end 26D of the elongated tube 26 at an upper end of the elongated member. connection 30. The connection member 30 supports a reservoir assembly 32 containing the fluid to be dispensed 10 from the dispensing apparatus 10. The reservoir assembly 32 is removably connected to the connection member 30 at the lower end 31 of the member connection port, also referred to as the connection surface of the reservoir assembly, such that the reservoir assembly 32 can be removed and replaced when the fluid has been exhausted from the reservoir assembly 32. The dispensing apparatus 10 additionally features a motor housing 202 which is positioned between the distal end 26D of the elongated tube 26 and the disconnecting member. The motor housing 202 may also contain electronic control devices that control the automatic nature of the dispensing apparatus 10. Connected to the motor housing is a power supply housing 204, which contains the power supply or transformer used to power the 25 automatic dispensing apparatus 10 within the scope of the present invention.
Referring to Figure 2, in one embodiment the reservoir assembly 32 includes a main container 121 and a top portion 122. The top portion 122 has connection devices 40 that fit into complementary connection devices located on the connection member 30. That is, the connecting member 30 serves to hold the reservoir assembly 32 in the dispensing apparatus 10 having a complementary connection device that allows the connecting device 40 to effectively hold the main container 35 in the dispensing assembly. A suitable connection device is described in Patent Application Publication US2009 / 0166381, which is incorporated herein by reference. The reservoir assembly 32 has a dispensing tube 119 that extends out of the dispensing assembly. The dispensing tube 119 is generally an elongated tube that conveys the fluid to be dispensed from the pump 114 (shown in Figure 3) to the outlet 20 of the dispensing head 18. The fluid exits the dispensing tube through the end of the dispensing head. dispensing 118. Figure 2 shows the top portion 122 in the main container 121 and Figure 3 shows the top portion 10 removed from the main container 121, so that the internal structure of the reservoir assembly 32 can be viewed. The main container 121 serves to hold and contain the fluid 22 to be dispensed from the dispenser 10. The main container 121 has an opening 123 at the top, which is not shown in Figure 2. The main container can also have a neck 124 nearby the opening, where the neck 124 of the main container forms the opening in the main container 121. Generally, the top portion 122 can be attached to the main container 121 in the neck 12 4 of the main container 121. The top portion 122 can be attached to the Main container 121 in such a way that the top portion 122 is removably attached to the main container 121 or in such a way that the top portion 122 is permanently attached to the main container 121. For example, the top portion 122 can be sealed to the main container 121 using ultrasonic solder, adhesive or other suitable means to permanently fix the top portion 122 to the main container 121. If it is desirable that the top portion 122 is removable from the main container 121, the top portion 122 can be coupled to the main container 121 using known methods, such as threading (not shown) in the top portion 122 and complementary thread 128 shown in Figure 4 in the main container 121. Other similar methods could be used to removably secure the top portion 122 to the main container 121.
Located inside main container 121 is a pump 114, shown in Figure 3. As shown in Figure 3, pump 114 is located in opening 123 of main container 121, generally in neck 124 of the main container. It is also possible that the pump 114 is located at the top 122 of the main container 121, or located at the bottom of the main container 121. For the purposes of the description of the present invention, the pump will be described as being generally located at the neck 124 of the main container 121. In general, pump 114 has an inlet 141, an outlet 142 and a recovery device 143. As with most pumps, pump 114 has an inactive phase, a discharge phase, and a charging phase . In the inactive phase, which is shown in Figure 3, the pump mechanism 114 is at rest and is not actively loading or unloading the fluid. The discharge phase of the pump is a phase in which a measure of fluid is expelled from the pump 114 through the outlet 142 of the pump. In the loading phase of pump 114, a measure of precursor fluid 22 is withdrawn 15 from reservoir 112 through inlet 141 into pump 114. Typically, fluid is withdrawn to the inlet of pump 114 through an immersion tube 67. The recovery device 143 allows the pump 114 to return to the inactive phase from the end of the discharge phase. When pump 114 is returning to the inactive phase from the end of the discharge phase, pump 114 is in the charging phase. More details of a pump 114 usable in the present invention will be described below.
As shown in Figure 3, the dispenser 10 can be provided with a pump mounting element 120. This pump mounting element 120 can be used to contain and / or secure the pump 114 and the return suction mechanism 116 , when present, at neck 124 of the main container. The pump mounting element 120 fits into the opening 123 of the main container 121, which is shown in Figure 3 and can be permanently mounted in the opening or removably mounted in the opening. Alternatively, the pump mounting element 120 can be associated with the top portion 122 of the dispenser. That is, the pump mounting element 120 can be removably connected to the top portion 122 of the reservoir assembly 32. In another alternative configuration, the pump mounting element 120 can be permanently connected to the top 122 of the dispenser, such that the pump mounting element 120 forms a bottom surface of the top portion 122. Alternatively, the pump 114 could be housed within the main container 121.
As shown in Figure 3, the device of the pump 114 is located inside the neck 124 of the main container 121, as described above, and serves to remove the fluid or fluid precursor 22 from the main container 121 of the reservoir 112 and force the fluid out of the dispensing end 118 of the elongated tube 119 and out of the dispensing nozzle 10 of the dispenser 10. The pump device 114 can advantageously be constructed with widely available "stock" components in order to increase manufacturing efficiencies . In one embodiment of the present invention, the pump device 114 is a foaming pump of the type in general use with 15 other foaming devices. Suitable pumps can be purchased from a variety of pump manufacturers, including, for example, Rexam Airspray, Inc., with offices at 3768 Park Central Blvd, North, Pompano Beach, Florida, USA, and RiekeCorporation 500 W. 7 th Street, Auburn Indiana, USA. A suitable commercially available pump 20 is the F2 foaming pump from Airspray Rexam, Inc. Many other models of foaming pumps are also available on the market, and can be used depending on variables such as the size of the dispensed measure and the like. It is also possible to use a commercially available pump device 25, which may or may not be modified in various ways for use in the dispensing apparatus 10, depending on the application or the fluid to be dispensed from the dispensing apparatus 10.
To have a better understanding of an exemplary pump 30 that can be used in the present invention, attention is directed again to Figure 3. As shown, the pump device 114 is a foaming pump and includes an external tubular piston 62 and a tubular piston internal 64 located inside a pump cylinder 66. Note that non-foaming pumps can also be used in the dispenser of the present invention, when the fluid to be dispensed from the dispenser is a non-foaming fluid. As shown, the pump cylinder 66 has a wide portion 66W and a narrow portion 66N. The outer tubular piston 62, the wide portion 66W of the pump cylinder 66 and the outer surface of the inner piston 64 form a first chamber 68, which is an air chamber. The internal piston 64 and the narrow portion 66N of the pump cylinder 66 form a second chamber 69, which is the fluid chamber. The pump device 114 additionally includes a buffer element 70, which is maintained in an axially fixed relationship with respect to the pump cylinder 66. The buffer element 70 is advantageously used to mount the pump device 114 within 10 of the reservoir 112, and as shown, more particularly, to the pump mounting element 120, which is contained within the main container 121 or in the top portion 122 of the reservoir assembly 32. In the illustrated embodiment, for example, the pump mounting element 120 is configured as a disk-shaped member 15 having a threaded portion 76. The outer thread of the threaded portion 76 is coupled by the inner thread of the buffer element 70, as shown in Figure 3. Other suitable devices can be used to secure the pump assembly 114 to the reservoir 112.
An engaging element or attenuator 12 6 is in communication with the piston assembly 61 of the pump. Typically, the attenuator 126 will be physically connected to the piston assembly 61. In the illustrated embodiment, the attenuator 126 is configured, has a cylindrical portion 79, and a disc-shaped flange 80. It is generally the cylindrical portion 79 that is connected to the piston 61 of pump 114. Typically, attenuator 126 is generally located near the central axis of reservoir assembly 32, which provides advantages discussed below. Other features of the attenuator 12 6 are an upper structure 127 and a lower structure 12 8 30 which are connected by a connecting structure 129. The upper structure has an upper surface 132. Reciprocal movement of the attenuator 126 will cause the piston assembly 61 move inside the pump cylinder 66. The piston assembly 61 is normally taken to a higher position (resting position), shown in Figure 3, due to the strength of a pump recovery device 143. The pump recovery device The pump can be a compressible member, or, in an electronic configuration, the motor can be used to retrieve the pump. A suitable pump recovery device 143 includes a coil spring, as shown in Figure 3.
As indicated above, the pump assembly 114 shown in Figure 3 is a foaming pump. The foaming pump shown mixes liquid 22 from main container 121 with air within the pump frame. The external piston 62 contains air inlet openings 72, which allows air to pass through the external piston 62 to enter the air chamber 68. Additionally, the external piston 62 is provided with an air exhaust passage 73, which allows that the air present in the air chamber 68 escapes from the air chamber 68. To prevent the air in the air chamber 68 from escaping through the air inlet opening 72, a non-return valve 7 4 is positioned close to the air inlet opening 72 that opens during the loading phase and closes during the discharge phase of the pump 114. This non-return valve 74 also prevents air and / or fluid from entering the air chamber 68 during the loading phase from the exhaust air passage 73 during the loading phase of the pump. The operation of this check valve is described in more detail in U.S. Patent 5,443,569 to Uehira et al. , which is incorporated by reference. Pump device 114 is additionally provided with additional check valves 84, 85 and 86 to ensure adequate flow of liquid through the pump. The non-return valve 86, located at the base of the pump cylinder 66, allows the liquid 22 to be drawn into a lower liquid chamber 69, through the pump inlet 141 when the internal piston 64 moves in an upward direction (phase of charge). When the inner piston 64 moves in a downward direction 30 (discharge phase), the check valve 85 allows the liquid 22 to be passed to an upper liquid chamber 90 from the lower liquid chamber 69. Additionally, the valve check valve 84 allows the fluid to escape from the upper chamber of the pump 90 into the mixing chamber 92. Both check valves 84 and 85 are open at the same time and closed at the same time. In the mixing chamber 92, the air from the air chamber 68 is mixed with the liquid 22 from the upper liquid chamber90. The mixture of air and liquid creates a foam fluid that is forced through a porous member 93. The porous member 93 is "shaped like a porous structure of the mesh or mesh type to create uniformity in the bubbles of the fluid foam. 0 fluid is then forced through outlet 142 of pump 114. While a variety of different check valve configurations are contemplated, the illustrated embodiment uses common ball and seat valves. Another configuration of these elements can be used without departing from the scope of Another 10 structures and functional elements, such as gaskets and gaskets, can be used in the pump device to prevent the pump from leaking or to improve the function of the pump As indicated above, pump 114 is described as a pump foaming pump, however, a foaming pump is a specific embodiment of the present invention.Non-foaming pumps can also be used in the dispenser of the present invention as a separate second modality. The fluid leaving the outlet 142 of the pump 114 is transported to the elongated tube 119 through a flexible tube 96. Generally, the outlet 142 of the pump 114 typically moves with the piston assembly 61. To counterbalance this movement of the outlet 142 of pump 114, a flexible tube 96 has a first end 97 connected to the outlet of pump 142. The second end 98 of flexible tube 96 is attached to an inlet 162 of a stationary member 174, shown in Figure 4. Referring again to the Figure 3, 25 the stationary member 174 has a passage 175. The stationary member 174 also has an outlet 163, which is connected to the elongated tube 119. The stationary member is supported or held in place by a support 179. With the stationary member 174 and the flexible tube 96, the movement of the pump piston assembly is not transferred to the dispensing tube 119.
A return suction mechanism 116 can optionally be included within the dispenser. Return suction mechanisms are described in U.S. Patent Application 12/329904, filed December 8, 2008, which is incorporated by reference, and provides a device to prevent the dispenser from dripping in the sink between uses. Generally, return suction mechanism 116 is a separate and distinct element from pump 114. In addition, return suction mechanism 116 has at least one resilient member 161, capable of storing fluid, which can be connected to stationary member 174 The resilient member 161 is generally of hollow structures 5 having an opening 172 located near the portion of the resilient member 161 that must be positioned on or near the stationary member 174. The hollow portion 173 of the hollow structure allows the resilient member 161 to store the fluid. Generally, the return suction mechanism 116 operates by forcing the hollow structure of the resilient member 10 to collapse, thereby forcing the fluid within the hollow portion 173 out of the hollow portion. Then, the resilient member 161 returns to its original shape and size, which creates a vacuum, and causes the fluid to be refilled into the resilient member. Generally, at the end of the discharge phase of the pump 114, 15 non-dispensed fluid remains between the dispensing end118 and the second opening 163 of the stationary member 174. A portion of the non-dispensed fluid is drawn into the resilient member 161, which prevents the non-dispensed portion drips from the dispensing end 118 of the dispensing tube 119 and 20 helps to prevent the fluid dispensed from the user from forming wire with the fluid not dispensed. The return suction mechanism 116 can operate independently of pump 114 or can operate in conjunction with pump 114. When operated separately from the pump, the return suction mechanism does not depend on the pump 25 recovery device 143. When operated in conjunction with the pump, the pump recovery device 143 assists in the recovery of resilient members during the loading phase of the pump. The first opening 162 of stationary member 174 is connected to outlet 142 of pump 114.
Optionally, an additional element that may be present is a filling port 23, as shown in Figure 4, which allows the reservoir 112 to be filled with the fluid.
To activate actuator 126 to dispense fluid 35 from dispenser 10, an actuator stem 130 contacts the upper surface 132 of actuator 12 6, as shown in Figure 3. Alternatively, the actuator stem can be connected to the upper surface 132 of the actuator 126. The stem 130 of the actuator can contact the upper surface 132 of the actuator 126, passing through an opening 131 in the actuator, shown in Figure 2, located in the top portion 122 of the reservoir assembly 32 The opening 131 of the actuator is generally positioned around the centerline of the top portion 122, as shown in Figure 2, as is the upper surface 132 of the attenuator. In an embodiment of the present invention, the tube 119, which connects the dispensing end 118 to the second opening 163 will be located centrally in the opening of the actuator 131, as shown in Figure 2. The opening of the actuator 131 can be a single opening, such that the actuator stem 130 can contact the upper surface 132 of the actuator 126.
When the actuator stem 130 depresses the actuator 15 126, the actuator 126 depresses the piston assembly 61, including both the outer tubular piston 62 and the inner tubular piston 64 of the pump, making the transition from pump 114 from the idle phase to the discharge. Pressing the resilient members 161, when present, also causes any fluid inside the hollow portion 173 to be expelled from the resilient members 161 to the passage 175 and towards the dispensing end 118 of the dispenser. In addition, fluid is expelled from pump 114 through outlet 142 of pump 114 to flexible tube 96, which carries passage 175. The fluid enters passage 175 and joins the fluid expelled from the resilient member 161, when gift. The fluid is also expelled from the dispensing nozzle 20 of the dispenser 10. When the actuator 126 finishes depressing the resilient member 161, when present, and the piston assembly 61 of the pump 114, the pump recovery device 143 3 0 causes the pump to transition from the discharge to the loading phase. During the loading phase of pump 114, actuator 126 is returned to its resting position, shown in Figure 3, which in turn allows the resilient member 161, when present, to return to its original shape from a state compressed.
When the resilient member 161 is returned to its original form, a vacuum is created, causing a portion of any fluid not dispensed between the return suction mechanism 116 and the dispensing nozzle 20 to be sucked into the resilient member 161. It is this vacuum created and the removal of the portion of the fluid not dispensed to the resilient member 161 which avoids the problems of wire formation and dripping from the dispensing nozzle 20 of the dispenser.
As indicated above, the return suction mechanism is optionally present. If the return suction mechanism is not present, then the fluid is dispensed from outlet 142 to the flexible tube, to the stationary member 174 and to the dispensing tube 119. In the present invention, the dispenser assembly 10 is a dispenser hands-free. As such, the dispenser assembly 10 is electronically driven by an electronic device, such as a motor. In one embodiment, sensor 21 is selected such that sensor 21 is able to detect the hands of a user below the nozzle 20. The sensor 21 can be an infrared sensor or other similar type of sensors that can sense the hands of a user below the nozzle 20. When the sensor 21 detects the hands of a user below the nozzle 20, the sensor 21 sends a signal to the control circuit that a user has requested a dose of fluid, when placing the hands below the nozzle . The control circuit, in turn, sends a signal to a motor 210, shown in Figure 5, to activate the motor for a given cycle.
In a particular embodiment, sensor 21 is electrically connected to a control panel (not shown), having control circuit 500, shown in Figure 6 and is discussed in more detail below. The control panel, with its control circuit, can be located in the motor housing 022 or in the power supply housing 204. Optionally, the control panel 30 can be located in a separate compartment or housing. The actual location of the control panel and the control circuit is not critical to the present invention.
Typically, the power supply housing 204 can be separated from the motor housing, so that the power supply 35 can be replaced when necessary. That is, the power supply is disconnectable and reconnectable to the motor housing 202. To ensure that the energy is transferable from the power supply 205 in the housing 204 of the power supply to the motor housing 202, electrical contact points can be used, both in the motor housing 202 and in the power supply housing 204. These electrical contact points 5 are in complementary positions, meaning that when the power supply 205 in the power supply housing 204 is connected to the power supply housing motor 202, an electrical connection is made. Power supply 205 powers the entire unit, including sensor 21, control circuit 500, 10 including processor and motor 210.
The power supply 205 for the fluid dispensing system of the present invention can include disposable DC batteries (not shown). Alternatively, the power supply 205 may be a closed system that requires the entire power supply to be replaced as a single unit. Although not shown in the figures, an AC to DC adapter / transformer can be used to provide an alternative source of energy for the fluid dispenser. This mode can be particularly useful when the fluid dispenser is mounted in the vicinity of an AC outlet or when it is desirable to power multiple dispensers from a centrally located transformer with an appropriate configuration and power. The number of batteries used to power the engine will depend on the engine selected for the dispenser. Disposable batteries usable in the present invention include 9-volt batteries, 1.5-volt batteries, such as D or C batteries, or other similar batteries. The exact type of battery selected for use is not critical to the present invention, as long as the power supplied to the engine is compatible with the engine. For applications where the fluid dispenser 30 will be used in low usage situations, rechargeable batteries could be used. If the dispenser is to be used in a bright light situation, the batteries can be solar rechargeable batteries.
Once the processor receives the signal from the sensor, the processor sends power to motor 210, which in turn drives the pump. In order to have a better understanding of a possible configuration of the motor housing 202, attention is now directed to Figures 5A, 5B, 5C and 5D. The motor housing 202 houses a motor 210, gears 211, 212 which are engaged with motor 210 and an additional gear 213 which drives an actuator stem 130. The actuator stem 130 driven by the motor 5 is housed in the motor housing 202 and extends from the motor housing 202 through an opening present in the lower surface of the connecting member 30. Any method, can be used to drive the stem 130 of the actuator driven by the motor. In a typical operation of the electronic 10 fluid dispensing system, the actuator stem 130 driven by the motor comes into contact with the actuator 126 and pushes the actuator 126 downwards to activate the pump 114, one or more times, to expel a measure the fluid from the dispensing nozzle 20 of the dispensing head 18.
Numerous ways can be used to transfer power from an activated motor 210 to the actuator stem 130 driven by the motor. For example, motor 210 can drive a series of wheels, gears or other power transmission devices to the actuator stem 130, which extends 20 and contacts the actuator 126. In one embodiment of the present invention, which intended to be an exemplary device that can be used to drive the actuator stem 130, the drive wheel 213 has a stem or shaft 214 that extends from an area of the gear body close to the periphery 215, as shown in Figures 5A and 5B. When the engine 210 turns the driving wheel 211 of the motor, the driving wheel 211 of the motor in turn turns one or more wheels 212. In Figure 5A, a single wheel 212 is shown; however, it may be desirable to have more wheels to reduce the rotational speed of the driving wheel 213, so that the pump 141 is activated 30 in a controlled manner. It is the skill of those skilled in the art to select the drive wheel ratio so that the appropriate speed of the drive wheel 213 of the actuator is obtained. Note that the term "wheel", as used in this document, is intended to cover any wheel type mechanism, including the wheels themselves and other wheel type mechanisms, such as gears. Gears are generally desirable, since gears are less likely to slip during use. .
As shown in Figure 5B, the actuator drive wheel 213 has an axis 214 that extends from a non-central area of the actuator drive wheel 213, which causes the axis to rise and fall in direction 325 as the wheel drive 213 of the actuator rotates. This shaft 214 is engaged in a horizontal channel 322 present in the guide member 320 of the actuator. The horizontal channel 322 is generally on the horizontal axis 2. The horizontal channel 322 is created by two horizontal projections 321 and 321 'extending from one side of the guide member 320 of the actuator. As the drive wheel of the actuator rotates, the axis 214 makes a circular path and has a vertical movement 32 5 on the vertical axis 1, shown in Figure 5B and a horizontal movement 326 on the horizontal axis 2, 15 shown in Figure 5C. The vertical movement 32 5 of the shaft 214 causes the guide member 220 of the actuator to move up and down on the vertical axis 1, which in turn causes the actuator stem 130 to move also upwards and down the vertical axis. Below the channel 322 present in the 20 guide member 320 of the actuator is the actuator stem 130. The actuator guide member 320 is held in place so that the movement of the actuator guide member is up and down on the vertical axis, not from side to side or from front to back. The guide member 320 of the actuator can be held in place, for example, by providing vertical guide grooves 323 so that the side faces of the guide member 320 of the actuator are held in place along the horizontal axis. These vertical guide grooves 323 can be provided in the motor housing 202 as shown in Figures 5B, 5C and 5D.
As mentioned above, axis 214 also has a horizontal movement 326 on horizontal axis 2. This horizontal movement is essentially undesirable. In order to take into account the horizontal movement, the axis is allowed to move horizontally on the horizontal axis 2 along the channel 322 in the actuator guide member. Therefore, channel 322 controls the essentially unwanted horizontal movement 326 of axis 214.
Hands-free fluid dispensing systems may also have additional features. For example, the dispensing head 18 may have indicator lights to signal various events, such as a user acknowledgment, low battery, empty soap tank, or other conditions, such as an engine failure. Examples of such lights include low-energy lights, such as LEDs (Light Emitting Diodes).
In the present invention, the control circuit 500 10 contains a processor 510, which has a built-in clock (onboard). Processor 510 is in communication with sensor 21 and motor 210. A general diagram of a control circuit 500, which can be used in the present invention is shown in Figure 6. Generally described, the control circuit has a 15 processor 510, a sensor circuit 512 and a motor drive circuit 514. Each of the sensor circuit 512, processor 510 and the motor drive circuit 514 are powered by the power supply 205. In the operation of this circuit , the sensor circuit 512 sends a signal to the transmitter 20 21T of the sensor 21 to transmit a signal from the transmitter 21T. The receiver 21R of the sensor 21 receives a feedback signal from the transmitter 21T. When a user's hand is detected by receiver 21R, sensor circuit 512 sends a signal to processor 510 which is recognized by the processor as a signal 25 to activate motor 210, once a user's hands have been detected. The processor 510, in turn, sends a signal to the drive circuit of the motor 514. The drive circuit of the motor 514 activates the motor 210, which in turn activates the rod 130 of the attenuator, the attenuator 12 6 and the pump , causing the dispenser of the present invention to dispense the fluid. This description is only for the basic components present in the control circuit. Other additional components, such as warning lights for conditions such as low battery, empty soap tank, or other conditions, such as engine failure, could be included in the control circuit by those skilled in the art. Exemplary control circuits for sensors, lights and buttons are known to those skilled in the art and are shown, for example, in U.S. Patent 6,929,150 to Muderlak et al. , which is incorporated by reference.
Processor 510 is configured to determine a time interval between dispensing cycles. The 510 processor has a built-in clock function that determines the time between fluid requests. Processor 510 determines the time elapsed between the user's current soap request and the previous soap request. If the time difference is greater than a predetermined time, processor 510 10 will send a signal to the motor drive circuit, indicating that a greater amount of soap needs to be dispensed. In the present invention, processor 510 and motor drive circuit 514 can activate the motor for a single cycle or for multiple cycles. As used here, a cycle is the attenuation of the pump to dispense a single dose of fluid.
The 510 processor has a clock function that is capable of considering the time between a current fluid request and a previous fluid request. When the time period is longer than a predetermined time period, processor 510 20 will instruct motor 210 to activate for two or more cycles. This instruction will be executed through the motor drive circuit 514, as shown in Figure 6, or it can be executed directly from the processor. Suitable processors include processors such as Phillips' 89LPC922. Another 25 similar processors can be used in the present invention without departing from the scope of the present invention.
In the present invention, the fluid dispensed from the dispenser can be a variety of fluids. Generally, the fluid dispensed will be a 30 hand cleaning fluid, such as liquid soap, liquid disinfectant, gel soap, foaming soap precursor, foaming disinfectant precursor, or other similar liquid hand or hand cleaner formulations. disinfection. Note that in the case of foaming soap precursor, or foaming disinfectant precursor, these formulations are liquid before a foaming pump converts these fluids into a foam.
The selection of the fluid to be dispensed from the dispenser will affect the conditions that will be used to dispense the fluid, including the pump and the predetermined period of time. If the fluid to be dispensed is a precursor of foam, the predetermined period of time will be based on factors, such as the period of time that the liquefaction of the foamy soap occurs, the temperature, pressure and other similar factors. Generally, the predetermined period of time will be adjusted to a period of time when liquefaction of the particular foamy soap occurs being dispensed from the dispenser, or a shorter period than liquefaction of the foamy soap occurs. Usually, liquefaction of sparkling soaps occurs within about 1 hour. Therefore, the predetermined time period should be a time period of about 11 hours or less. In one embodiment of the present invention, the predetermined time is set to a period of time, which is approximately half the time that liquefaction of the foam will occur. For example, if the liquefaction occurs in 1 hour, the predetermined time would be adjusted to 30 minutes. For most of the 20 sparkling soaps and disinfectants, liquefaction usually occurs within 1 hour. Therefore, the predetermined time for most sparkling soaps will be set to 1 hour or less, for example, 50 minutes, 45 minutes, 40 minutes, 30 minutes, 20 minutes, 15 minutes, 10 minutes and the like. Generally, the predetermined time period will be between about 10 minutes and about 1 hour.
In the case of liquids (which are not foaming) being dispensed from the fluid dispenser, the predetermined period of time will generally be longer and will depend on 30 conditions, such as the rate of fluid evaporation, temperature, pressure and the components of the fluid. liquid. For liquids, the predetermined period of time can be in the range of about 10 minutes to about 6 hours, or even longer.
Other features may include product recognition, where the reservoir assembly 32 has a product identification feature that can communicate with the control circuits to identify the product to be dispensed, or other features, such as the size of the pump. of fluid in the reservoir assembly, the type of pump (fluid or liquid). The control circuits would have a device to receive the product identification information. Exemplary product identification devices include an optical RFID sensor, such as a barcode reader and other similar devices. The processor can then adjust the predetermined time according to the product to be dispensed to take into account the specific liquefaction time 10 for the product to be dispensed. In addition, other conditions, such as temperature and pressure, can also be communicated to the processor, so that the predetermined time could be adjusted according to the environmental conditions.
In the present invention, if the time elapsed between 15 dispensing events is greater than the predetermined period of time, the engine 210 is operated so that multiple doses of the soap are dispensed. By multiple doses, it is intended to mean 2 or more doses in succession. Generally, only 1 or 2 additional pump attenuations are required in the present invention, but there could be more, in the case of liquefaction. When multiple doses of the fluid are to be dispensed, the dispensing time between doses should be as short as possible. If the period is too long, the user will withdraw his hand or hands before the second or subsequent dose is dispensed. Typically, multiple doses should occur in less than 5 seconds, more desirably, in less than 2 seconds. Generally, the shorter the time between doses, the better. In an embodiment of the present invention, multiple doses are dispensed within about 0.5 seconds, typically between about 0.1 and 0.5 seconds.
In addition, the control circuit may include the starting or replacement mode of the reservoir assembly. In such a mode, the processor would instruct the motor control circuit 514 to attenuate the pump for several cycles. In addition, the control circuit may have a built-in delay circuit, such that, in a situation where the time between dispensing intervals is shorter than the predetermined period of time, the motor only attenuates the pump once for a given time. short period of time, such as 0.5 to about 2 seconds. This will prevent users from using too much fluid during a hand washing event.
Another feature that may be present in the fluid dispenser of the present invention are additional switches that can adjust the fluid dispenser to dispense a single dose, or always dispense a double dose. A third adjustment on this switch would be for the dispenser to operate 10 as described herein, dispensing a double dose of foam, if the time between dispensing is greater than a predetermined period of time. Other switches or adjustments could be used on a variable resistance switch that could be used to adjust and change the predetermined period of time. Yet another switch could be used to determine the type of fluid to be dispensed from the fluid dispenser. The fluid dispenser of the present invention will generally serve the necessary amount of the fluid soap for a hand cleaning event. Generally, the amount of fluid 20 will be up to about 3 ml or more of the fluid, depending on the nature of the hand cleaning or disinfecting fluid. For industrial applications, the upper limit for the amount of fluid to be dispensed could be greater than 3 mL. For most hand washing events, the amount of fluid 25 will be less than 2 ml, and generally less than 1 ml. In a particular embodiment, the amount of precursor served by the fluid dispenser is between about 0.45 ml and about 0.8 ml and more particularly, between 0.45 ml and 0.55 ml. The present invention is also directed to a process for dispensing a fluid to a user from a fluid dispenser. This process has the steps of: a. provide a set of tendon-sensing dispensers, a motor and a pump b. detect the presence of a current user requesting the fluid from the dispenser assembly c. determine a time elapsed between a previous fluid request and the current fluid request; d. comparing the elapsed time with a predetermined period of time; activate an engine for a single cycle, if the elapsed time is less than the predetermined time period 5 or for multiple cycles, if the elapsed time is longer than the predetermined time period. The process of the present invention is shown graphically in Figure 7, which includes a processor having a clock. The process 500 has a dispenser assembly, the dispenser assembly 10 has a sensor. The sensor is checked on a regular basis (box 501). Then, if a hand is present or the sensor otherwise detects a user with the hand or hands below the nozzle (box 502), the engine is started (box 503), while the current time Tc is checked (box 504 ). If the elapsed time 15, which is the current time Tc minus the previously recorded time Tr is calculated greater than an adjusted time Ts (box 505), then the motor runs for multiple cycles (box 506). If the current time Tc minus the previously recorded time Tr is calculated less than a given time Ts (box 506), 20 then the motor runs for a single cycle (box 507). At the end of the cycle, whether it is a multiple cycle or a single cycle, the processor records the time Tr (box 508). At this point, the dispenser again returns to the detection of a hand in the vicinity of the sensor (box 502). As an alternative modality, instead of decalculating the time lapse, the processor could be provided with a timer. In such a configuration, the elapsed time is determined from the timer. In box 505, the timer is returned to zero and the time in the timer in box 505 is the 30 elapsed time, which is compared with the set time Ts. The operation of the engine for multiple cycles can be achieved by different methods. In one method, the processor will provide a higher voltage to the motor, which will make the motor run faster to dispense the fluid. Another method is to have an engine that runs as fast as necessary to achieve the desired dispensing time. with reference Although the present invention has been described in various ways, those skilled in the art will recognize that changes in shape and detail can be made without departing from the spirit and scope of the invention. As such, it is intended that the foregoing detailed description be considered as illustrative and not limiting and that it is the appended claims, including all their equivalents, that are intended to define the scope of the invention.

权利要求:
Claims (18)
[0001]
1. Fluid dispenser (10) comprising: a. a reservoir (121) for containing a fluid (22) to be dispensed; B. a pump (114) having an inlet (141) and an outlet (142), in which the pump (114) draws fluid (22) from the reservoir (121) through the inlet (141) and expels the fluid (22 ) through the outlet (142); ç. a dispensing tube (119), directly or indirectly connected to the pump outlet (142); d. a nozzle (18) which is adapted to receive the dispensing tube (119) and to dispense the fluid (22) to a user; and. a motor (210); f. an attenuator (126) in communication with the motor (210), in which the attenuator (126) activates the pump (142) to dispense the fluid (22) from the dispenser (10) when the motor (210) is activated; g. a processor (510) in communication with the motor (210), the processor (510) configured to determine a time interval between a previous fluid request (22) and the current fluid request (22) and to activate the motor ( 210) for one or more cycles, based on said time interval between fluid stresses (22), wherein one cycle is an attenuation of the pump (142) to dispense a measure of the fluid (22); and h. a sensor (21) for detecting the presence of a user, the sensor (21) in communication with the processor (510); wherein when the sensor (21) detects the presence of a user, the sensor (21) provides a signal to the processor (510), the processor (510) determines said time interval between fluid requests (22) and provides a signal to the motor (210) to activate it and the processor (510) activates the motor (210) for a single cycle if said time interval between fluid requests (22) is less than a period predetermined time and, characterized by the fact that the processor (510) activates the motor (210) for multiple cycles if said time interval between fluid requests (22) is greater than the predetermined time period.
[0002]
2. Dispenser (10) according to claim 1, characterized in that it additionally comprises a return suction mechanism (116) located between the pump outlet (142) and the dispensing tube (119).
[0003]
3. Dispenser (10) according to claim 1, characterized in that the fluid (22) comprises a liquid soap, a liquid disinfectant, a gel soap, a foaming soap precursor or a foaming disinfectant precursor.
[0004]
4. Dispenser (10) according to claim 1, characterized by the fact that the fluid (22) is a precursor of foaming soap and the pump (114) is a foaming pump, in which the foaming pump removes the precursor from foam from the reservoir (121) through the inlet (141) and combines a gas with the foam precursor to form a foam.
[0005]
5. Dispenser (10) according to claim 1, characterized by the fact that the processor compares said time interval between requests for fluid (22) with a predetermined period of time.
[0006]
6. Dispenser (10) according to claim 5, characterized in that the predetermined period of time is between about 10 minutes and about 6 hours.
[0007]
7. Dispenser (10) according to claim 4, characterized by the fact that the processor (510) compares said time interval between fluid requests (22) with a predetermined period of time, the predetermined period of time it is correlated with a liquefaction time of the sparkling soap.
[0008]
8. Dispenser (10) according to claim 7, characterized by the fact that the predetermined time is between about 10 minutes and about 1 hour.
[0009]
9. Dispenser (10) according to claim 1, characterized by the fact that the nozzle (18) is mounted above the counter (11) by means of a mounting device that extends through the counter (11) or in which the dispenser (10) is a dispenser built into the counter (11) with the nozzle (18) and the sensor (21) located above the counter (11).
[0010]
10. Dispenser (10) according to claim 1, characterized by the fact that it additionally comprises a power supply connected to the processor (510), the sensor (21) and the motor (210).
[0011]
11. Process of dispensing a fluid to a user from a dispenser (10), the process characterized by the fact that it comprises: a. providing a dispenser assembly having a sensor (21), a motor (210) and a pump (114); b. detect the presence of a current user requesting the fluid from the dispenser assembly c. determining a time interval between a previous fluid request (22) and the current fluid request (22); d. comparing said time interval with a predetermined period of time; activating a motor (210) for a single cycle, if said time interval is less than the predetermined time period and for multiple cycles, if said time interval is greater than the determined time period; wherein a cycle is an attenuation of the pump (114) to dispense a single measure of fluid (22).
[0012]
12. Process according to claim 11, characterized by the fact that the multiple cycles are two or three cycles.
[0013]
13. Process according to claim 11, characterized in that the fluid (22) comprises a liquid soap, a liquid disinfectant, a gel soap, a foaming soap precursor or a foaming disinfectant precursor.
[0014]
14. Process according to claim 11, characterized by the fact that the predetermined period of time is between about 10 minutes and about 6 hours.
[0015]
15. Process according to claim 13, characterized by the fact that the fluid (22) is a precursor to foaming soap.
[0016]
16. Process according to claim 15, characterized by the fact that the predetermined time is between about 10 minutes and about 1 hour.
[0017]
17. Process according to claim 11, characterized by the fact that the fluid volume (22) is between about 0.45 ml and about 2.0 ml.
[0018]
18. Process according to claim 17, characterized by the fact that the volume of the fluid (22) is between about 0.55 ml and 0.65 ml.

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法律状态:
2020-09-29| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2021-02-02| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2021-03-16| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 16/03/2021, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

US12/628,665|2009-12-01|

US12/628,665|US8371474B2|2009-12-01|2009-12-01|Fluid dispenser|

PCT/IB2010/054784|WO2011067684A2|2009-12-01|2010-10-21|Fluid dispenser|

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