• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    LIQUID AND METHOD SUPPLY A liquid supply (30, 130, 330) includes a lever (48, 348) that moves in response to the expansion and contraction of a variable chamber (42, 342) inside a liquid reservoir ( 56, 356). The movement of the lever (48, 348) moves a ball (52, 352) or sealing member (154, 354) to open or close an opening (60, 360) outside the liquid reservoir (56, 356).
    公开号:BR112012028883B1
    申请号:R112012028883-0
    申请日:2010-05-10
    公开日:2020-11-10
    发明作者:Ralph L. Stathem；David Olsen；Mark C. Donning
    申请人:Hewlett-Packard Development Company L.P；
    IPC主号:
    专利说明:

    Background of the invention
    Liquid supplies can use one or more valves to treat back pressure during liquid release. Such valves can be complex, space-consuming and unreliable. Brief description of the drawings
    Figure 1 is a schematic illustration of a liquid deposition system having a liquid supply with a valve arrangement like a pressure regulator in a closed state according to an example of an embodiment;
    Figure 2 is a schematic illustration of the liquid deposition system of Figure 1 illustrating the valve arrangement as the pressure regulator in an open state according to an example of the embodiment;
    Figure 2A is a schematic illustration of the liquid deposition system of Figure 1 illustrating the valve arrangement as a check valve according to an example of the embodiment;
    Figure 3 is a schematic illustration of another embodiment of the liquid deposition system of Figure 1 having another embodiment of supplying liquid with a valve arrangement like a pressure regulator in a closed state according to an example of embodiment;
    Figure 4 is a schematic illustration of the liquid deposition system of Figure 3 illustrating the valve arrangement as the pressure regulator in a first open state according to an example of the embodiment;
    Figure 4A is a schematic illustration of the liquid deposition system of Figure 4 illustrating the valve arrangement as a check valve according to an example of the embodiment;
    Figure 5 is an exploded perspective view of another embodiment of the liquid supply of Figure 1 according to the example of the embodiment;
    Figure 6 is a perspective view of the liquid supply of Figure 5 with the cap removed according to the example of the embodiment;
    Figure 7 is a partial sectional view of the liquid supply of Figure 5 with a valve arrangement in a closed state according to an example of the embodiment;
    Figure 8 is a partial sectional view of the liquid supply of Figure 5 with the valve arrangement as a pressure regulator in an open state according to an example of the embodiment; and
    Figure 8A is a partial sectional view of the liquid supply of Figure 5 with the valve arrangement as a check valve according to an example of the embodiment. Detailed description of the examples of the embodiments
    Figure 1 schematically illustrates the liquid deposition system 20 according to an exemplary embodiment. The liquid deposition system 20 deposits a liquid or solution on a substrate or medium. In the illustrated example, the liquid deposition system 20 comprises a printing or image system configured to print patterns, text or images on a printing medium 22. In other embodiments, the liquid deposition system 20 can deposit liquids in other ways . As will be described below, the liquid deposition system 20 includes a liquid supply having a valve arrangement that regulates the pressure in a compact, less expensive and reliable manner.
    The liquid deposition system 20 includes media transport 24, actuator 26, liquid ejectors 28, liquid supply 30 and controller 34. Media transport 24 comprises a mechanism configured to position a substrate or media 22 face-on in relation to the liquid ejectors 28. In one embodiment, the media transport 24 can be configured to position a sheet ("web") of media, such as a sheet of paper, in front of the liquid ejectors 28. In another In this embodiment, the media transport 24 can be configured to position or prepare the individual sheets of the media opposite the liquid ejectors 28. The media transport 24 can move and position such substrate or media using any of a combination belts, rollers, cylinders or drums and the like.
    The actuator 26 comprises a mechanism configured to move, sweep or alternate liquid ejectors 28 in both directions along the axis 36 and from side to side of the substrate or medium 22 positioned by the media transport 24. In the illustrated example in which ejectors liquid 28 are supported or loaded by the liquid supply 30, the actuator 26 moves or sweeps both liquid ejectors 28 and liquid supply 30, as a unit, transversely or substantially across the media or substrate 22 positioned by the media transport 24. In one embodiment, actuator 26 may comprise a motor driven shaft that drives a flexible cable, belt or the like connected to a car (not shown) supporting the liquid supply 30 and ejectors 28 to move the liquid supply 30 and liquid ejectors 28 along the substrate or medium 22. In another embodiment, the actuator 26 may have other configurations. In other embodiments, actuator 26 can be excluded. For example, in embodiments where the ejectors 28 comprise a wide page layout, the ejectors or where the media transport 24 sufficiently positions the medium 22 in relation to the ejectors 28, the actuator 26 can be excluded.
    The liquid ejectors 28 comprise structures configured to selectively eject or dispense liquid on a substrate or media. Liquid ejectors 28 receive liquid from the liquid supply 30. As liquid ejectors 28 extract liquid from the liquid supply 30, backpressures can be created within the liquid supply 30. In the illustrated example, liquid ejectors 28 comprise one or more printheads directly connected to the liquid supply 30. Examples of liquid ejectors 28 include, but are not limited to, thermally resistant printheads, piezo-resistant printheads and the like. In other embodiments, the liquid ejectors 28 can be indirectly connected or coupled to the liquid supply 28 through additional conduits, passages, tubes and the like.
    The liquid supply 30 supplies liquid, such as paint or other solutions, to the liquid ejectors 28. The liquid supply 30 includes housing 40, variable chamber 42, actuator ("bias") 44, pump 46, lever 48, actuator 50 and sphere 52. Housing 40 comprises one or more structures that delimit and form an internal chamber, volume or liquid reservoir 56. In one embodiment, housing 40 is configured as a cartridge that forms reservoir 56 for containing ink. The housing 40 additionally includes or forms openings 60, seat 62, ball alignment guide 64 and one or more supports 66.
    Opening 60 comprises a conduit or passageway extending from the inside of housing 40 (liquid reservoir 56) to an outside of housing 40, outside of housing 40. In one embodiment, opening 60 is connected to the atmosphere, allowing the intake of air in the reservoir 56 over the opening 60 when the opening 60 is open or not blocked. In another embodiment, opening 60 is connected to a separate liquid supply 70, allowing liquid, such as paint, to enter reservoir 56 over opening 60. For example, in one embodiment, liquid supply 70 may comprise a larger independent liquid reservoir or may comprise a liquid supply outside the geometrical axis or connected to the opening 60 by a tube or other liquid supply structure. Although opening 60 is schematically illustrated as being substantially linear, opening 60 can have a variety of sizes, shapes, lengths and configurations.
    The seat 62 comprises one or more surfaces over the opening 60 configured to contact a sealing member (sphere 52 in the liquid supply 30). Seat 62 cooperates with a sealing member (ball 52) to form a seal over opening 60 when the sealing member is in contact with seat 62. Seat 62 can have various shapes and sizes depending on the size and shape of the member sealing. In one embodiment, seat 62 may include a surface 72 of size, shape and location so as to contact the sealing member, where surface 72 is formed from a hydrophobic material. In one embodiment, surface 72 may be integrally formed as part of housing 40 or may be provided with a ring or other separate structure attached to opening 60. In the embodiment in which surface 72 is hydrophobic, opening 60 has less pressure of bubbles. In other embodiments, the surface 72 can be formed from other materials so as not to be hydrophobic.
    The ball alignment guide 64 comprises one of many structures configured to guide the movement of ball 52 towards and away from seat 62 and opening 60. Guide 64 facilitates the alignment of ball 52 with seat 62 and opening 60. In the For example, the guide 64 comprises a recess, obstacle or cavity that receives at least a portion of the ball 52 to inhibit the lateral movement of the ball 52, so that the ball 52 no longer extends over the opening 60 or no longer properly contact surface 72 to seal over opening 60. In other embodiments, guide 64 may have other configurations.
    Support 66 comprises a support or resting point on which lever 48 rotates or pivots. The support 66 is dimensioned and located in such a way that the lever 40 can be rotated or rotated around the support 66 to an extent such that the sealing member, sphere 52, can be moved away from the opening 60 in order to open, unlock or remove the seal from the opening 60. In other embodiments, the support 66 can be replaced by other structures or mechanisms that pivotally support the lever 48 in relation to the sealing member (ball 52). For example, lever 48 can alternatively be pivoted to housing 40.
    The variable chamber 42 comprises a chamber or volume bounded inside the reservoir 56 and inside the enclosure 40 that has at least one flexible, elastic or extensible wall coupled to the lever 48 so that the expansion or contraction of the chamber 42 and the movement the wall exerts a force on the lever 48, pivoting the lever 48 on the support 64. In the illustrated example, the chamber 42 has an elastic, flexible or extensible wall 76 that moves to expand, contract or change the shape of the chamber 42, so as to move the lever 48. For example, in one embodiment, the wall 76 of chamber 42 may comprise a flexible partition or membrane. In other embodiments, the chamber 42 can include additional flexible or extensible walls, where the volume of the chamber 42 can be increased or decreased or where the volume can remain the same, but the shape of the chamber 42 changes to exert a force on and move lever 48.
    The actuator 44 comprises one or more springs configured to resist or control the expansion or change in the shape of the wall 76 and chamber 42. In the illustrated example, the actuator 44 comprises a compression spring. In other embodiments, the actuator 44 can comprise other types of springs or can be excluded.
    The pump 46 comprises a pump connected to an interior of chamber 42 in order to selectively inflate and deflate the chamber 42. In the illustrated embodiment, the pump 46 is configured to supply pressurized air into the interior of the chamber 42 in order to inflate the chamber 42, to hyperinflate the chamber 42 so that the interior of the reservoir 56 has a positive pressure. Such hyperinflation of the chamber 42 facilitates the expulsion of the liquid through the ejectors 28 to the main liquid ejectors 28. In some embodiments, the pump 46 can be excluded.
    Lever 48 comprises a rigid or substantially inflexible bar or elongated member that extends along the support 66, along the ball 52, and in contact with or operationally coupled to the wall 76 of the chamber 42. Lever 48 allows a relatively small amount of force resulting from the movement of the wall 76 to move the lever 48. In one embodiment, the lever 48 has a length and is located in relation to the support 66 and actuator 50 to provide an amplification force of 7 to 1.
    In one embodiment, lever 48 is formed from stamped metal. In another embodiment, the lever 48 can be formed from rigid or substantially rigid polymers or other materials. Lever 48 is movable in response to expansion, contraction or a change in chamber shape 42 and wall movement or elongation 76. Although illustrated as being linear or extending in a plane, lever 48 can include curves and the like. In one embodiment, lever 48 may include one or more rounded portions or undulations in contact with one or both wall 76 or sphere 52.
    The actuator 50 comprises one or more springs configured to resiliently actuate or push the lever 48 towards the opening 60, towards the ball 52 and towards the surface 76 of the chamber 42. The actuator 50 drives the lever 48 against ball 52 to resiliently actuate ball 52 towards seat 62 and towards a position where ball 52 blocks, closes or seals opening 60. In the illustrated example, actuator 50 comprises a spring connected to each of them, between housing 40 and lever 48. In other embodiments, actuator 50 may comprise a compression spring between housing 40 and lever 48. In one embodiment, actuator 50 may comprise one or more further springs formed integrally as part of the single unitary body with the housing 40 or integrally formed as part of a single unitary body with the lever 48.
    The ball 52 comprises a spherical member between the lever 48 and the opening 60, where the ball 52 is movable between a first position (shown in figure 1) in which the opening 60 is sealed, and a second position (shown in figure 2) in which the opening 60s is not sealed or opened. In one embodiment, sphere 52 is linearly translatable between the first position and the second position. In the arrangement shown in Figure 1, ball 52 serves as a sealing member to seal or close opening 60. In one embodiment, ball 52 has an external rubber or elastomeric or compressible surface, allowing ball 52 to conform against the seat 62 for an improved seal. In another embodiment, the ball 52 can be relatively hard and smooth, where the surface 72 is elastomeric or compressible for the improved coupling count seal between the ball 52 and the seat 62. In such embodiments, the compressibility or elastomeric nature of the ball 52 and / or seat 62, allows the valve arrangement provided by ball 52 and seat 62 to overcome imperfections in the sealing surfaces and still be resistant to impact, inhibit or minimize the intrusion of air in the reservoir 56 under impacts or by external forces to the supply of liquid 30. In still other embodiments, either ball 52 and seat 62 may be elastomeric or both sphere 52 and seat 62 may be incompressible and smooth. In some embodiments, sphere 52 may include a hydrophobic outer surface to facilitate separation of sphere 52 from seat 62 and lever 48 under inflation or expansion of chamber 42 or movement of wall 76. For the purposes of this description, when referring to seat 62, surface 72 or the surface of sphere 52, the term "compressible" or "elastomeric" means that the surface will reshape or deform resiliently in response to the forces applied by lever 48 under sphere 52 against the seat 62, in one embodiment, less than or equal to about 200g of strength and nominally less than or equal to about 100g of strength.
    Controller 34 comprises one or more processing units configured to generate control signals directing and controlling the operation of the liquid deposition system 20 (illustrated as a printer). For the purposes of this application, the term "processing unit" should be understood in the present development or future development as the processing unit that executes instruction sequences contained in a memory. The execution of the instruction sequences causes the processing unit to perform steps, such as the generation of control signals. Instructions can be loaded into random access memory (RAM) for execution by the processing unit from read-only memory (ROM), a mass storage device, or some other persistent storage. In other embodiments, the connected wire electrical circuits can be used in place of or in combination with software instructions to implement the described functions. For example, controller 34 can be incorporated as part of one or more specific applications in integrated circuits (ASICs). Unless otherwise specifically indicated, the controller is not limited to any specific combination of hardware and software circuits, nor to any particular source for instructions executed by the processing unit.
    In the illustrated embodiment, controller 34 generates control signals aimed at transporting media 24 to the position of a substrate or printed medium 22 in relation to liquid ejectors 28. Controller 34 additionally generates signals directed to liquid ejectors 28 to selectively , deposit the liquid on the substrate or printed medium 22. In embodiments where the liquid supply 30 is mapped through the printing medium 22, the controller 34 can also generate control signals directing such movement through the control of the actuator 26. To facilitate the use of ejectors 28, controller 34 can also generate control signals towards pump 46 to hyper-inflate chamber 42 to such main ejectors 28. In other embodiments, controller 34 can control a greater or lesser amount of such operation associated with the liquid deposition system 20.
    Figures 1, 2 and 2A further illustrate the operation of the liquid supply 30. Figure 1 illustrates the valve arrangement provided by lever 48 and ball 52 serving as a pressure regulator and in a closed or sealed state closing the opening 60. A Figure 2 illustrates the valve arrangement provided by lever 48 and ball 52 serving as a pressure regulator and in an open state. Figure 2A illustrates the supply of liquid 30 during the pre-activation of the ejectors 28, where the ball 52 serves as a check valve.
    In the states shown in figures 1 and 2, lever 48 and ball 52 act as a pressure regulator, opening and closing opening 60 based on the pressure inside the interior 56 to regulate the pressure inside the interior 56. In the state shown in Figure 1, any counter or negative pressure inside 56 is insufficient to substantially displace wall 76 against actuator 44 and against actuator 50. In other words, any counter or negative pressure currently present inside 56 is not large enough to move lever 48 at a sufficient distance so that ball 52 can move away from seat 62. As a result, actuator 50 continues to resiliently push lever 48 against bearing 66 and against ball 52 so that ball 52 is propelled against and in sealing contact with seat 62 through opening 60. In one embodiment, the force exerted on ball 52 by lever 48 is approximately 100g or 1 Newton . In other embodiments, the force may have other values depending on the characteristics of the ball 52 and seat 62, and the expected pressures exerted under the ball 52 on the opening 60. In one embodiment, the chamber 42 is vented to the atmosphere when the lever 48 and ball 52 are acting as a pressure regulator to regulate the pressure inside the interior 56.
    Figure 2 illustrates the supply of liquid 30 allowing the entry of liquid (from the liquid supply 70) or air into the interior 56 (as indicated by the arrow 80), in response to a back pressure or negative pressure within the interior 56. As a result, the valve arrangement provided by lever 48 and ball 52, reduces or eliminates back pressure. Such negative pressure or back pressure can be the result of a previous withdrawal of the liquid from the reservoir 56. As illustrated in figure 2, the back pressure inside the reservoir 56 causes the wall 76 of the chamber 42 to further expand to the reservoir 56, such movement of wall 76 rotates the lever 48 around the support 66 (or around a pin or other hinge point in other embodiments) against the actuation of the actuator 50. As a result, the back pressure inside the reservoir 56 driving the ball 52 away from opening 60 and away from seat 62 becomes greater than the remaining forces pushing ball 52 towards opening 60 and towards seat 62. Consequently, ball 52 moves away from opening 60, allowing air (in a embodiment) or liquid (in another embodiment) enter the reservoir 56, as indicated by the arrow 80. Air or liquid flows into the reservoir 56 until the back pressure inside the reservoir 56 become sufficiently small such that the wall 76 moves backwards in the direction of the position or state shown in figure 1, allowing lever 48, under the force of actuator 50, to return to the state shown in figure 1, pushing the ball 52 back towards the first position and once again closing or sealing the opening 60. Thus, the chamber 42, the lever 48, the ball 52 and actuators 44 and 50 serve to regulate the pressure inside the reservoir 56.
    Figure 2 illustrates the valve arrangement provided by lever 48 and ball 52 serving as one of the check valve during pre-activation of the ejectors 28. During such pre-activation of the ejectors 28, the chamber 42 is not continuously ventilated to the atmosphere , but it is inflated or hyper-inflated by pump 46. In particular, pump 46 hyperinflates chamber 42, moving or stretching wall 76. As a result, wall 76 rotates lever 48 around support 66 (or around a pin or other point of articulation, in other embodiments) against actuation of actuator 50. Lever 48 does not continuously propel ball 52 towards opening 60 and towards seat 62.
    The hyperinflation of chamber 42 further increases the pressure inside the interior 56 in order to conduct or force liquid, such as paint, to the ejectors 28. The increase in pressure inside the interior 56 forces the ball 52 against the seat 62, so that ball 52 functions as a check valve closing opening 60. In some embodiments in which port 60 is connected to an external source of liquid 70, external source 70 can also supply additional liquid through port or opening 60, to serve as an additional pressure source to push the liquid or ink to the ejectors 28. In such embodiments, the additional liquid supplied through the port or opening 60 to assist in the pre-activation of the ejectors 28, is supplied at a pressure greater than the pressure within from the inside 56 in order to move the ball 52 away from the seat 62 to open the opening 60.
    At the end of the pre-activation, the chamber 42 is allowed to empty, returning to the state illustrated in figure 1. In one embodiment, the chamber 42 is once again ventilated to the atmosphere (the outside of the supply 30). As a result, the valve arrangement provided by lever 48 and ball 52 again serves as a pressure regulator, either by closing door 60, as shown in figure 1, or by opening door 60, as shown in figure 2, depending on the existence or quantity of any back pressure within the interior 56.
    Figures 3 and 4 schematically illustrate the liquid deposition system 120, another embodiment of the liquid deposition system 20, illustrated in figures 1 and 2. The liquid deposition system 120 is similar to the liquid deposition system 20, except that the liquid deposition system 120 includes the supply of liquid 130 in place of the supply of liquid 30. The supply of liquid 130 is similar to the supply of liquid 30, except that the supply of liquid 130 includes a seat 162 in place of the seat 62 and additionally includes the sealing member 154. Those remaining elements of the liquid deposition system 120, which correspond to the elements of the liquid deposition system 20 are similarly numbered.
    Seat 162 is similar to seat 62, except that seat 162 is configured to cooperate with sealing member 154 (instead of ball 52) to form a seal in order to block, close or obstruct opening 60 when the member seal 154 is positioned against and in contact with seat 162. In the illustrated example, seat 162 is illustrated as a substantially smooth flat surface over aperture 60 and perpendicular to the geometric axis of aperture 60. In other embodiments, seat 162 can alternatively, to have other configurations depending on the opposed engagement surfaces of the sealing member 154. In one embodiment, seat 162 can include a surface 172 of a certain size, formed and located so as to contact the sealing member, where the surface 172 is formed from a hydrophobic material. In one embodiment, surface 172 may be integrally formed as part of housing 40, or may be provided by a ring or other separate structure fixed around opening 60. In that embodiment where surface 172 is hydrophobic, opening 60 has a lower bubble pressure. In other embodiments, surface 172 may be formed from other materials, so as not to be hydrophobic.
    Sealing member 154 comprises a member extending through opening 60 and secured between ball 52 and opening 60. Sealing member 154 is movable between a sealed position (shown in figure 3), sealing or blocking opening 60, and an unsealed position (shown in figure 4), away from opening 60 to allow air (in one embodiment) or liquid (in another embodiment) to flow, passing sealing member 54 and entering reservoir 56. In the illustrated example, the sealing member 154 is linearly translated between the sealed position and the unsealed position.
    According to one embodiment, the sealing member 154 includes an external hydrophobic surface 165 facing seat 162 to facilitate separation of member 154 from seat 162. In one embodiment, seat 154 may additionally, or alternatively, include an external hydrophobic surface 167 facing ball 52 to facilitate separation of ball 52 from sealing member 154. In one embodiment, in addition to being hydrophobic or as an alternative to being hydrophobic, surface 165 of sealing member 154 can be similar to rubber or elastomeric to facilitate sealing against seat 162. For the purposes of this description, when referring to surfaces 165, 167 or surface 172, the term "compressible" or "elastomeric" means that the surface will change shape or deform, resiliently, in response to the forces applied by lever 48 on ball 52 against sealing member 154 and seat 162, in an embodiment less than or equal to ce about 200 g of force and nominally less than or equal to about 100 g of force.
    In the embodiment illustrated in figures 3 and 4, a sealing member 154 comprises a smooth, flat, inflexible, substantially rigid plate or disc. In other embodiments, a sealing member 154 may have other shapes and configurations. For example, the sealing member 154 may have a greater transverse dimension extending closer towards or in contact with the opposite sides of the guide 64, where the guide 64 guides the movement of the sealing member 154 towards and away from the opening 60 and holds sealing member 154 fully over opening 60.
    Figures 3, 4 and 4A further illustrate the operation of the liquid supply 130. Figure 3 illustrates the valve arrangement provided by lever 48, ball 52 and sealing member 154 serving as a pressure regulator and in a closed and sealed state closing opening 60. Figure 4 illustrates the valve arrangement provided by lever 48, ball 52 and sealing member 154 serving as a pressure regulator and in an open state. Figure 4 illustrates a liquid supply 130 during the pre-activation of the ejectors 28, where the sealing member 154 serves as a check valve.
    In the states shown in figures 3 and 4, the lever 48, the ball 52 and the sealing member 154 function as a pressure regulator, opening and closing the opening 60 based on the pressure inside the interior 56 to regulate the pressure inside the interior 56. In the state shown in figure 3, any negative pressure or back pressure within the interior 56 is insufficient to substantially move wall 76 against actuator 44 and against actuator 50. In other words, any negative pressure or back pressure, at the moment inside, 56 is not large enough to move lever 48 a sufficient distance so that ball 52 and sealing member 154 can move away from seat 162. As a result, actuator 50 continues to drive , in a resilient way, the lever 48 against the support 66 and against the ball 52, in such a way that a sealing member 154 is pushed against and in sealing contact with the seat 162 along the opening 60. In one embodiment For example, the force exerted on ball 52 by lever 48 is approximately 100 g or 1 Newton. In other embodiments, the force may have other values, depending on the characteristics of the sealing member 154 and seat 62 and the expected pressures exerted on the sealing member 154, on the opening 60. In one embodiment, the chamber 42 is vented to the atmosphere when the lever 48, the ball 52, and the sealing member 154 are functioning as a pressure regulator to regulate the pressure inside the interior 56.
    Figure 4 illustrates the supply of liquid 130 allowing the entry of liquid (from the liquid supply 70) or air into the interior 56 (as indicated by the arrow 180) in response to negative pressure or back pressure within the interior 56. As a As a result, the valve arrangement provided by lever 48 and balls 52 reduces or eliminates back pressure. Such negative pressure or back pressure can be the result of a previous withdrawal of the liquid from the reservoir 56. As shown in figure 4, the back pressure inside the reservoir 56 causes the wall 7 6 of the chamber 42 to expand further into the reservoir 56, such wall movement 76 rotates the lever 48 around the support 66 (or around a pin or other hinge point in other embodiments) against the actuation of the actuator 50. As a result, the counter pressure inside the reservoir 56 drives ball 52 away from opening 60 and away from seat 62, becoming larger than the remaining forces propelling ball 52 towards opening 60 and sealing member 154 towards seat 62. Consequently, the sealing member 154 moves away from opening 60, allowing air (in one embodiment) or liquid (in another embodiment) to enter reservoir 56, as indicated by arrow 180. Air or liquid flows into the reservoir 56 until the back pressure inside the reservoir 56 becomes small enough so that the wall 76 moves back in the direction of the position or state shown in figure 3, allowing the lever 48, under the force of the actuator 50, to return to the state shown in figure 3, pushing ball 52 back towards the first position, and sealing member 54 against seat 162, once again closing or sealing opening 60. Thus, chamber 42, lever 48, ball 52 , the sealing member 154 and actuators 44 and 50, serve to regulate the pressure inside the reservoir 56.
    Figure 4A illustrates the valve arrangement provided by lever 48, ball 52 and sealing member 154 serving as a check valve during pre-activation of ejectors 28. During such pre-activation of ejectors 28, chamber 42 does not it is continuously ventilated to the atmosphere, but it is inflated or hyper-inflated by pump 46. In particular, pump 46 hyperinflates chamber 42, moving or stretching wall 76. As a result, wall 76 rotates lever 48 around support 66 (or around a pin or other hinge point, in other embodiments) against actuation of actuator 50. Lever 48 continuously pushes ball 52 towards opening 60 and sealing member 154 towards seat 62.
    The hyperinflation of the chamber 42 further increases the pressure inside the interior 56 in order to conduct or force the liquid, such as paint, to the ejectors 28. The increase in pressure inside the interior 56 forces the sealing member 54 against the seat 162, so that the sealing member 154 functions as a check valve closing the opening 60. In some embodiments in which the port 60 is connected to an external liquid source 70, the external source 70 can also supply additional liquid through the port or opening 60 to serve as an additional pressure source for pushing liquid or ink into the ejectors 28. In such embodiments, the additional liquid provided through the door or opening 60 to assist in pre-activating the ejectors 28, is supplied at a pressure greater than the pressure inside the interior 56 in order to move the sealing member 154 away from the seat 162 to open the opening 60.
    At the end of the pre-activation, the chamber 42 is allowed to empty, returning to the state illustrated in figure 3. In one embodiment, the chamber 42 is once again ventilated to the atmosphere (the outside of the supply 130). As a result, the valve arrangement provided in part by lever 48, ball 52 and sealing member 154, again serves as a pressure regulator, either by closing door 60, as shown in figure 3, or by opening door 60 , as shown in figure 4, depending on the existence or quantity of any back pressure inside the interior 56.
    Figures 5-8 illustrate the liquid supply 330, another embodiment of the liquid supply 30. According to one embodiment, the liquid supply 330 is used in place of the liquid supply 30 in figure 1 or the liquid supply 130 in the figure 3.
    As with liquid supply 30 and 130, liquid supply 330 provides liquid, such as paint or other solutions, to liquid ejectors 28 (illustrated in figures 1 and 3) that are connected to supply 330. The supply of liquid 330 includes housing 340, variable chamber 342, actuator 344, pump 46 (schematically shown in figures 1 and 3) pneumatically connected to an interior of chamber 342, lever 348, actuator 350, ball 352 and sealing member 354 The housing 340 comprises one or more structures which delimit and form an internal chamber, volume or liquid reservoir 356. In the illustrated embodiment, the housing 340 is configured as a cartridge that forms the reservoir 356 to contain ink. In an illustrated example, the housing 340 includes a box ("clamshell") formed by the main portion 400 and a lid 402 which, when joined together, delimit the interior 356. As illustrated in figures 6 and 7, the main portion 400 includes or shape openings 360, seat 362, ball alignment guide 364 and supports 366.
    Opening 360 comprises a conduit, channel or passageway extending from the inside of housing 340 (liquid reservoir 356) to the outside of housing 340, outside of housing 340. In one embodiment, opening 360 is connected to the atmosphere , allowing air to enter the reservoir 356 over opening 360 when opening 360 is open or unlocked. In another embodiment, aperture 360 is connected to a separate liquid supply 70 (shown in figures 1 and 3), allowing liquid, such as paint, to enter reservoir 356 over aperture 360. Although aperture 360 is schematically illustrated as being substantially linear, aperture 360 can have a variety of sizes, shapes, lengths and configurations.
    Seat 362 comprises one or more surfaces over aperture 360 configured to contact seal member 354. Seat 362 cooperates with seal member 354 to form a seal between aperture 360 when seal member 354 is in contact with seat 362. Seat 362 can take various shapes and sizes, depending on the size and shape of the sealing member. In one embodiment, seat 362 can include a surface 372 of a certain size, shape and location in order to contact the sealing member, where surface 372 is formed from a hydrophobic material. In the illustrated embodiment, surface 372 is integrally formed as part of housing 340. In other embodiments, surface 372 may be provided by a ring or a separate structure around aperture 360. In that embodiment in which surface 372 is hydrophobic, the aperture 360 has a lower bubble pressure. In other embodiments, the surface 372 can be formed from other materials so as not to be hydrophobic.
    Ball alignment guide 364 comprises one of more structures configured to guide movement of ball 352 towards and away from seat 362 and opening 360. Guide 364 facilitates alignment of ball 352 with seat 3 62 and in contact with the sealing member 354 in the entire opening 360. In one embodiment, a minimum clearance of 0.2 mm is provided between the edges of the sealing member 354 and the opposite surfaces of the guide 364. In the illustrated example, the sealing member 354 has a diameter of at least 0.4 mm smaller than the internal diameter of the opening between the opposing guides 364. Because the guide 364 is spaced from the sealing member 354, in those embodiments where air enters the opening 360, air can flow more easily past the sealing member 354 and past the ball 352 with less likelihood of forming a meniscus ("meniscus"), which otherwise could add back pressure inside the interior 356.
    In the illustrated example, the guide 364 comprises a plurality of angularly spaced fingers or teeth ("prongs") that receive at least a portion of the ball 352 to inhibit the lateral movement of the ball 352, such that an extension of the ball 352 does not extend continuously along the opening 360 or do not continuously contact the sealing member 354 properly to press the sealing member 354 along the opening 360. Depending on the guide 364 it comprises teeth, ribs, corners or other structures angularly spaced from each other on ball 352 and sealing member 354, (instead of a continuous cylinder), in those embodiments where air enters opening 360, air can flow more easily past sealing member 354 and past ball 352 with less likelihood of formation of a meniscus, which otherwise could add back pressure within the interior 356. In other embodiments, the guide 364 may have other configurations. The supports 366 comprise supports or seat points on which the lever 348 rotates, slides and / or pivots. The supports 366 are dimensioned and located so that the lever 348 can be pivoted or rotated on the supports 366 to such an extent that the sealing member 354 and ball 352 can be moved away from the opening 360 in order to open, unlock or remove the seal from the 360 opening.
    As shown in figure 6, in the illustrated example, the supports 366 include a pair of supports located on opposite sides of the ball 352, so that the lever 348 is contacted at three distinctly spaced points. In the illustrated example, these points are arranged as points of a triangle with the two supports 366 serving as the corners of the base of the triangle and sphere 352 serving as the apex of the triangle. Because the supports 366 are spaced from each other on opposite sides of the ball 352, the supports 366 support and orient, more stably, the lever 348 against the ball 352 without hinges or similar devices. In one embodiment, two thirds of the force exerted by lever 348 is applied to sphere 352 and one third of the force is shared between supports 366. In other embodiments, the number of supports 366, their relative positions and the distribution of forces, can be miscellaneous. In other embodiments, the supports 366 can be replaced with other structures or mechanisms that articulate the lever 348 relative to the ball 352. For example, the lever 348 can alternatively be articulated to the housing 340.
    Cover 402 closes the interior of housing 340. In the illustrated example, cover 402 includes a pair of mounting posts 404 for securing lever 348 and actuator 350. In the illustrated example, mounting posts 404 have angled faces 417 that contact the leaf springs around the opening of the mounting ears 416 with the angle of the ears 416. In one embodiment, the faces 417 form an angle of about 15 degrees. In the illustrated example, faces 417 are located on a line of intersection of both posts 404 and on one side of associated post 404 closest to the other post 404. As a result, posts 404 consistently interact with actuator 350 during deflection of the ears 416 and the variations in the force rate on the ball 352, for the force on the supports 366 is reduced. In one embodiment, the ratio of the force on the ball 352 to the force on the supports 366 is about 3 to 1.
    As further shown by figure 5, one of the posts 404 includes a locking portion 419. The locking portion 419 has a corresponding non-circular opening in one of the ears 416, where the portion 419 inhibits incorrect mounting of the actuator 350 on the posts 404 In another embodiment, the cap 402 may have other configurations. The variable chamber 342 comprises a chamber or volume bounded inside the reservoir 356 and inside the housing 340, which has at least one flexible, foldable or elongated wall coupled to the lever 348, so that the expansion or contraction of the chamber 342 and the movement of the wall exerts a force on lever 348, rotating lever 348 on supports 366. In the illustrated example, chamber 342 has a foldable, flexible or stretchable wall 37 6 that moves to expand, contract or change the shape of the sides chamber 342 to move lever 348. In the illustrated example, chamber 342 comprises a flexible bag. In other embodiments, the chamber 342 may comprise a rigid rigid container, having at least one side formed by the flexible or elongate wall 37 6. For example, in one embodiment, the wall 376 of the chamber 342 may comprise a flexible partition or membrane. In other embodiments, the chamber 342 may include additional flexible or stretchable walls, where the volume of the chamber 342 can be increased or decreased, or where the volume can remain the same, but the shape of the chamber 342 changing to exert a force on and move lever 348.
    The actuator 344 comprises a spring configured to resist or control the expansion or change in the shape of the wall 376 and chamber 342. In the illustrated example, the actuator 344 comprises a compression leaf spring trapped between the wall 376 and the cap 402. In other embodiments, actuator 344 may comprise other types of springs or may be excluded.
    Lever 348 comprises a rigid or substantially inflexible bar or elongated member extending through supports 366, through ball 352 and in contact with or operationally coupled to wall 376 of chamber 342. Lever 348 allows a relatively small amount of force resulting from movement of wall 376 move lever 348. In the illustrated example, lever 348 has a length and is located in relation to supports 366 and actuator 350 to provide an amplification force of 7 to 1.
    In the illustrated example, lever 348 is formed from stamped metal. In another embodiment, lever 348 can be formed from rigid or substantially rigid polymers or other materials. Lever 348 is movable in response to expansion, contraction, or a change in the shape of chamber 342 and the movement or elongation of wall 376. As shown in figure 7, lever 348 has a first portion 410 obliquely extended from surface 376 of the chamber 342 and a second portion 412 folded or obliquely extended from the first portion 410 so as to extend substantially parallel to the sealing member 354 and substantially perpendicular to an axial center line of the aperture 360 centered through sphere 352. As as a result, the alignment of forces on the ball 352 and the sealing member 354 is improved. In other embodiments, lever 348 may alternatively be linear to extend in one plane. In one embodiment, lever 348 may include one or more rounded portions or undulations in contact with one or both wall 376 and sphere 352.
    Actuator 350 comprises one or more springs configured to actuate or drive lever 348 towards opening 360, towards sphere 352 and towards surface 376 of chamber 342. Actuator 350 pushes lever 348 against sphere 352 to actuate , resiliently, the ball 352 towards the sealing member 354 against the seat 362 in which the sealing member 354 blocks, closes or seals the opening 360. In the illustrated example, the actuator 350 comprises a pair of leaf springs between housing 340 and lever 348. In the illustrated example, the pair of leaf springs is integrally formed as a single unitary body with lever 348. Each leaf spring includes a mounting ear 416, which is mounted under a corresponding post 404 of the cap 402. The geometry is such that the force is applied to the mounting ears 416 is below (in the direction of the opening 360) of the ball 352 and above (away from the opening 360) of the supports 366. As a result, stability is increased . In the illustrated example, actuator 350 has a shape or geometry in order to extend away or out from (not overlapping) chamber 342 or actuator 344. As a result, movement of wall 376 of chamber 342 and actuator 344 it is not unduly harmed. In other embodiments, the actuator 350 may have other configurations.
    In other embodiments, actuator 350 can comprise other mechanisms and can be attached to housing 360 and lever 348 in other ways. For example, in other embodiments, the actuator 350 may comprise a tension spring attached between each one, the housing 340 and the lever 348. In other embodiments, the actuator 50 may comprise a compression spring between the housing 40 and the lever 48.
    Ball 352 comprises a spherical member between lever 348 and aperture 360, where ball 352 is movable between a first position (shown in figure 7) in which aperture 360 is sealed by means of intermediate sealing member 354 and a second position (shown in figure 8) in which opening 360 is unsealed or open. In one embodiment, sphere 352 is linearly translatable between the first position and the second position.
    The sealing member 354 comprises a member extending over the opening 360 and secured between the ball 352 and the opening 360. The sealing member 354 is movable between a sealed position (shown in figure 7), sealing or blocking the opening 360, and an unsealed position (shown in figure 8), away from opening 360 to allow air (in one embodiment) or liquid (in another embodiment) to flow past sealing member 354 and enter reservoir 356. In the illustrated example, the sealing member 354 is linearly translatable between the sealed position and the unsealed position.
    According to one embodiment, the sealing member 354 includes a hydrophobic outer surface 365 facing seat 362 to facilitate separation of member 354 from seat 362. In one embodiment, seat 354 can, additionally or alternatively, include a hydrophobic outer surface 367 facing ball 352 to facilitate separation of ball 352 from seal member 354. In one embodiment, in addition to being hydrophobic or as an alternative being hydrophobic, the surface 365 of seal member 354 may be similar to rubber or elastomers to facilitate sealing against seat 362. As a result, sealing member 354 compresses or stretches to accommodate imperfections on opposite surfaces to form an improved seal.
    For the purposes of this description, when referring to surfaces 365, 367 or surface 372, the term "compressible" or "elastomeric" means that the surface will reshape or deform resiliently in response to the forces applied by lever 348 on the ball 352 against sealing member 354 and seat 362, in one embodiment, less than or equal to about 200 g of force and nominally less than or equal to 100 g of force. In one embodiment, the sealing member 354 comprises an elastomeric disc formed from a synthetic rubber, such as ethylene propylene diene monomer (EPDM). In other embodiments, the sealing member 354 can be formed from other materials.
    In the illustrated embodiment, the sealing member 354 comprises a substantially rigid, inflexible, smooth flat plate or disc having a transverse dimension extending closely towards or in contact with the opposite sides of the guide 364, where the guide 364 guides the member seal 354 towards and away from aperture 360 and keeps seal member 354 fully over aperture 360. In other embodiments, seal member 354 may have other shapes and configurations.
    Figures 7, 8 and 8A further illustrate the operation of the liquid supply 330. Figure 7 illustrates the valve arrangement provided by lever 348, ball 352 and sealing member 354 serving as a pressure regulator and in a closed or sealed by closing the 360 opening.
    Figure 8 illustrates the valve arrangement provided by lever 348, ball 352 and sealing member 354 serving as a pressure regulator and in an open state. Figure 8 illustrates a liquid supply 330 during the pre-activation of the ejectors 28 (shown in figures 1 and 3), where the sealing member 354 serves as a check valve.
    In the states shown in figures 7 and 8, the lever 348, the ball 352 and the sealing member 354 function as a pressure regulator, opening and closing the opening 360 based on the pressure inside the interior 356 to regulate the pressure inside the interior 356. In the state illustrated in figure 7, any negative pressure or back pressure inside 356 is insufficient to substantially move wall 376 against actuator 344 and against actuator 350. In other words, any negative pressure or back pressure currently present inside 356 , is not large enough to move lever 348 a sufficient distance so that ball 352 and sealing member 354 can move away from seat 362. As a result, actuator 350 continues to resiliently drive lever 348 against support 366, against ball 352, such that sealing members 354 are pushed against and in sealing contact with seat 362 over opening 360. In one embodiment, the force exerted on sphere 352 by lever 348 is approximately 100 g or 1 Newton. In other embodiments, the force may have other values depending on the characteristics of the sealing member 354 and seat 362 and the expected pressures exerted on the sealing member 354 on the opening 360. In one embodiment, the chamber 342 is vented to the atmosphere when the lever 348, the ball 352, and the sealing member 354 are functioning as a pressure regulator to regulate the pressure inside the interior 356.
    Figure 8 illustrates the liquid supply 330 allowing liquid to enter (from the liquid supply 70 shown in Figures 1 and 3) or air inside 356 in response to negative pressure or back pressure inside the interior 356. As a result , the valve arrangement is provided by lever 348 and ball 352 reducing or eliminating back pressure. Such negative pressure or back pressure can be the result of a previous withdrawal of the liquid from reservoir 356. As illustrated in figure 8, the back pressure inside reservoir 356 causes the wall 376 of chamber 342 to further expand to reservoir 356, such movement of wall 376 articulates lever 348 on supports 366 (or around a pin or other pivot point in other embodiments) against actuation of actuator 350. As a result, back pressure within reservoir 356 driving ball 352 away from opening 360 and away from seat 362, it becomes larger than the remaining forces driving ball 352 towards opening 360 and sealing member 154 towards seat 362. Consequently, sealing member 354 moves away from opening 360, allowing air (in one embodiment) or liquid (in another embodiment) to enter the 356 reservoir. Air or liquid flows into the 356 reservoir until the backpressures in the i reservoir 356 become small enough that the wall 37 6 moves backwards towards the position or state shown in figure 7, allowing lever 348, under the force of actuator 350, to return to the state illustrated in figure 7, pushing ball 352 back towards the first position and sealing member 354 against seat 362, again, closing or sealing opening 360. Thus, chamber 342, lever 348, ball 352, the member seal 354 and actuators 344 and 350, serve to regulate the pressure inside the 356 reservoir.
    Figure 8A illustrates the valve arrangement provided by lever 348, ball 352 and sealing member 354 serving as a check valve during pre-activation of ejectors 28 (schematically illustrated in figures 1 and 3). During such pre-activation of the ejectors 28, the chamber 342 is not continuously ventilated to the atmosphere, but is inflated or hyper-inflated by the pump 46 (illustrated schematically in figures 1 and 3). In particular, pump 346 hyperinflates chamber 342, moving or elongating wall 376. As a result, wall 376 pivots lever 348 on support 366 (or on a hinge or other hinge point in other embodiments) against actuation actuator 350. Lever 348 does not continuously propel ball 352 towards opening 360 and sealing member 354 towards seat 362.
    The hyperinflation of the chamber 342 further increases the pressure inside the interior 356 in order to conduct or force the liquid, such as paint, to the ejectors 28. The increase in pressure inside the interior 356 forces the sealing member 354 against the seat 362, as that the sealing member 354 functions as a check valve closing the opening 360. In some embodiments in which port 360 is connected to an external liquid source 70 (schematically illustrated in figures 1 and 3), the external source 70 can also providing additional liquid through the door or opening 360 to serve as an additional pressure source to push the liquid or ink to the ejectors 28. In such embodiments, the additional liquid provided through the door or opening 360 to assist in pre-activating the ejectors 28 is supplied at a pressure greater than the pressure inside the interior 356, in order to move the sealing member 354 away from the seat 362 to open the opening 360.
    At the end of pre-activation, chamber 342 is allowed to empty back to the state shown in figure 7. In one embodiment, chamber 342 is again vented to the atmosphere (outside of supply 330). As a result, the valve arrangement provided, in part, by lever 348, ball 352, and sealing member 354, 5 again serves as a pressure regulator, either by closing door 360, as shown in figure 7 or by opening the door 360 as shown in figure 8 depending on the existence or extent of any back pressure within the interior 56.
    Although the present description has been described with reference to examples of embodiments, those skilled in the art will recognize that changes can be made in form and details without departing from the scope of the claimed matter.
    权利要求:
    Claims (12)
    [0001]
    1. Liquid supply characterized by the fact that it comprises: a casing (40, 340) delimiting a liquid reservoir (56, 356) and having an opening (60, 360) between the liquid reservoir (56, 356) and the side of outside the enclosure (40, 340); a variable chamber (42, 342) inside the liquid reservoir (56, 356); a lever (48, 348) movable in response to the expansion and contraction of the variable chamber (42, 342); a sphere (52, 352) between the lever (48, 348) and the opening (60, 360), the sphere (53, 352) being movable between a first position in which the opening (60, 360) is sealed and a second position in which the opening (60, 360) is not sealed; and a spring (50, 350) acting resiliently on the lever (48, 348) towards the opening (60, 360) against the ball (52, 352) to act resiliently on the ball (52, 352) towards to the first position, in which the spring (50, 350) and the lever (48, 348) are integrally formed as a single unitary body.
    [0002]
    2. Supply of liquid, according to claim 1, characterized by the fact that it also comprises a seat (62) on the opening (60), in which the ball (52) contacts and seals against the seat (62) when in the first position .
    [0003]
    3. Supply of liquid according to claim 2, characterized by the fact that at least one of the seat (62) and the ball (52) includes a hydrophobic surface in contact with the other of the seat (62) and the ball (52) .
    [0004]
    4. Supply of liquid according to claim 1, characterized by the fact that it also comprises a sealing member (154, 354) through the opening (60, 360) between the sphere (52, 352) and the opening (60, 360) ), the sealing member (154, 354) being movable to a sealed position when the ball (52, 352) is in the first position and to an unsealed position away from the opening (60, 360) when the ball (52, 352 ) is in the second position.
    [0005]
    5. Supply of liquid according to claim 4, characterized in that at least one of the sealing member (154, 354) and the ball (52, 352) includes a hydrophobic surface in contact with the other of the sealing member ( 154, 354) and the ball (52, 352), or at least one of the sealing member (154, 354) and the ball (52, 352) includes a hydrophobic surface in contact with the other of the sealing member (154, 354) and the ball (52, 352) and the at least one of a surface around the opening (60, 360) and the sealing member (154, 354) include a hydrophobic surface in contact with the other of the surrounding surface the opening (60, 360) and the sealing member (154, 354).
    [0006]
    6. Delivery of liquid according to any one of claims 1 to 4, characterized in that the sphere (52, 352) includes an external elastomeric surface.
    [0007]
    7. Supply of liquid according to any one of claims 1 to 4, characterized in that the lever (48, 348) is movable in a direction away from the opening (60, 360) at a sufficient distance so that the lever ( 48, 348) is movable out of contact with the ball (52, 352).
    [0008]
    8. Supply of liquid according to claim 7, characterized by the lever (48, 348) being movable in the direction away from the opening (60, 360) against the spring (50, 350) acting in response to the expansion of the chamber flexible variable volume (42, 342).
    [0009]
    9. Supply of liquid, according to claim 7, characterized in that the lever (48, 348) is pivotable around a first support (66, 366) in the direction away from the opening (60, 360).
    [0010]
    10. Supply of liquid, according to claim 9, characterized by the fact that the lever (48, 348) is pivotable around a second support (66, 366) in the direction away from the opening (60, 360), the first support (66, 366) and the second support (66, 366) located on opposite sides of the sphere (52, 352).
    [0011]
    11. Supply of liquid according to claim 5 1 or 4, characterized in that the lever (48, 348) tilts in a direction towards the sphere (52, 352) so that a portion of the lever (48, 348) which contacts the sphere (52, 352) extends perpendicular to the direction of the opening (60, 360).
    [0012]
    12. Supply of liquid according to claim 1, characterized by the fact that the variable chamber (42, 342) has at least one flexible, elastic or extensible wall coupled to the lever (48, 348) in such a way that an expansion or contraction of the variable chamber (42, 342) and the movement of the wall exerts a force on the lever (48, 348), in which the direction of movement of the wall corresponds to the direction of movement of the sealing member (52, 154, 354 ).
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    同族专利:
    公开号 | 公开日
    EP2569162B1|2014-10-01|
    US8919935B2|2014-12-30|
    US20130050356A1|2013-02-28|
    SG185510A1|2012-12-28|
    CA2800572C|2015-02-10|
    MX2012013045A|2013-05-28|
    JP2013526433A|2013-06-24|
    CN102971148A|2013-03-13|
    AU2010352856B2|2014-05-15|
    CN102971148B|2016-03-16|
    AU2010352856A1|2012-12-06|
    EP2569162A1|2013-03-20|
    BR112012028883A2|2016-07-26|
    KR20130113929A|2013-10-16|
    KR101665412B1|2016-10-12|
    JP5624210B2|2014-11-12|
    HK1177178A1|2013-08-16|
    WO2011142742A1|2011-11-17|
    RU2538522C2|2015-01-10|
    RU2012152950A|2014-06-20|
    CA2800572A1|2011-11-17|
    EP2569162A4|2013-03-20|
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    法律状态:
    2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-03-19| B06T| Formal requirements before examination|
    2020-02-11| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-06-30| B25G| Requested change of headquarter approved|Owner name: HEWLETT-PACKARD DEVELOPMENT COMPANY L.P. (US) |
    2020-07-21| B09A| Decision: intention to grant|
    2020-11-10| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 10/11/2020, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/US2010/034272|WO2011142742A1|2010-05-10|2010-05-10|Liquid supply|
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