• 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:
    RESPIRATOR WITH SIDE FIT FILTER CARTRIDGE The present invention relates to a respirator (10) which includes a mask body (14), a filter cartridge receptacle (15) and a filter cartridge (12). The filter cartridge (12) has a side (30) that is capable of being plugged into the receptacle (15). The filter cartridge (15) can be inserted in the proper position inside the receptacle (15) while the mask body (14) is being used. Fixation can be achieved without the user visibly perceiving the actual engagement. An audible click or other Indication can be provided so that the user knows that the proper engagement has been achieved. The coupling may have little spacing between the filter cartridge (12) and the mask body (14), thus improving the visibility of the observer and making the respirator of the invention (10) more comfortable to use.
    公开号:BR112014011730B1
    申请号:R112014011730-6
    申请日:2012-11-07
    公开日:2020-11-24
    发明作者:Gary E. Dwyer；Pierre Legare
    申请人:3M Innovative Properties Company；
    IPC主号:
    专利说明:

    The present invention relates to a respirator that has a filter cartridge with side fitting. Background
    [001] Respirators commonly include a mask body and one or more filter cartridges that are attached to the mask body. In use, air is drawn through the filter cartridge using a negative pressure generated by the user during an inhalation. Ambient air passes through the filter medium to enter the mask body, where the filtered air is then safely inhaled by the user.
    [002] Several techniques have been used in the respirator technique to attach filter elements to respirators. A common technique has the filter element arranged in a threaded cartridge that is attached to a corresponding threaded fitting on the respirator body; see, for example, US Patent Nos. 5,222,488, 5,063,926, 5,036,844, 5,022,901, 4,548,626 and 4,422,861. Known filter cartridges typically have helical or lead spiral threads that fit with a compacted ring or socket that receives the threaded portion of the filter cartridge. Rotating the filter cartridge in a proper direction allows the cartridge to be attached or removed from the respirator.
    [003] Instead of threads, a bayonet closure system has been used to attach a filter cartridge to a respirator - see, for example, US Patent Nos. 5,062,421, 4,934,361 and 4,850,346 . The bayonet type closing system presented in the '421 patent has locking tabs and notches to hold the components together. In the '361 and' 346 patents, an audible device is used to indicate that the filter cartridge is properly attached to the respirator facepiece. A pin in the facepiece is provided with a ramp or retaining meat that has an inclined surface that is positioned to gradually deflect or deform a rib in the cartridge. As the cartridge and facepiece are rotated relative to each other in a locked position, the cam engages the rib and causes the rib and pin to deflect until the rib abruptly escapes from the end of the cam to produce the audible click.
    [004] Snap-fit couplings have been developed where the filter cartridge is manually pressed against the mask body without rotating movement, to cause an audible engagement - see US patent 39,493 by Yuschak et al. By manually pulling the cartridge in the opposite direction, disconnection can be achieved.
    [005] In addition to threads, bayonets and pressure fittings, a variety of other connections have been developed over the years. In US patent No. 5,148,803, for example, a bellows is used to attach a filter to the respirator. The bellows, together with a rigid band, forms a rigid clamp that receives the filter. US Patent Nos. 5,033,465 and 5,078,132 show the use of edge seals to attach a filter element to an elastomeric facepiece. In US Patent No. 4,856,508, a foam mask housing is presented to receive a filter cartridge. The foam mask housing has a ring that defines an opening for receiving the filter cartridge. In US Patent No. 4,790,306, insertion molding is used to permanently attach an absorbent filter element attached to a respirator facepiece. A locking structure is described in US Patent No. 4,771,771 for attaching a filter cartridge to a respirator chamber. The filter cartridge can be fitted to the respirator by sliding it through an opening in the fitting structure. In US Patent No. 4,630,604, locking tabs are used in a filter retainer to secure a replaceable filter element in a contiguous relationship with the respirator structure. The filter element can be replaced by removing the filter retaining element from the frame. An additional technique is presented in US patent No. 4,562,837, where the respirator is provided with a guide ring for interconnection with a filter housing. The guide ring is supported by a sleeve portion that defines an opening through which the gases pass. The filter housing slides into the guide ring from a retracted hold position to an extended use position.
    [006] Although the respirators discussed above use various techniques to attach a filter and filter cartridges to respirators, these techniques have some disadvantages. For example, filter cartridges that are threaded to the respirator typically require multiple turns to secure the cartridge to the mask body. Cylindrical geometry typically requires the use of the filter cartridge as an external attachment that can interfere with the user's view. In other constructions, the filter cartridges can be attached with little or no rotating movement, but these devices can, however, protrude slightly from the surface of the mask body. The further away from the mask body a filter cartridge is, the greater its movement, and thus more gravitational torque can be placed on the user's neck. In known respirators, fixation commonly occurs on the main face into the filter cartridge, which often requires the two parts to be spaced slightly apart from each other to allow the two parts to engage. A final disadvantage of conventional designs is that a characteristic appearance with a modern appeal is sometimes missing. Glossary
    [007] The terms shown below have the following definitions: "active particulate" means particles or granules that are specifically suitable to perform some action or function attributable to some characteristic or property including chemical property, such as catalysts and / or ionic times and / or properties physical properties such as trapping, adsorption, absorption or combinations thereof; “Clean air” means a volume of atmospheric ambient air that has been filtered to remove contaminants; “Outer gas space” means the ambient atmospheric gas space, into which the exhaled gas enters after passing through, and beyond, the mask body and / or the exhalation valve, “filter cartridge” means a device that it is fixable (removable or permanently) to a body of a respiratory mask for the purpose of filtering the air before it enters the interior gas space; "Filter cartridge receptacle" means a device sized and adapted to receive a portion of a filter cartridge; “Filter medium” means an air-permeable structure that is designed to remove contaminants from the air that pass through it, “enclosure side wall” means an air-impermeable surface that is located at least in a portion on the side of the structure; “Integral” means done at the same time or unable to be separated without damaging one or more of the integral parts; “Interior gas space” means the space between the mask body and a person's face, “main surface” means one or two of the surfaces that have the largest surface area in a device, typically the surface (s) through which the air passes through to enter a filter cartridge; “Mask body” means a structure that fits at least over a person's nose and mouth and that helps to define an interior gas space separate from an external gas space; “Full space” means an area or space where more than one airflow path converges with or meets another airflow path, or where more than one airflow path diverges from the area or space; "Plurality" means two or more, "plugged in" means that one part fits the other part through an act that includes manually sliding one part into the other; “Respirator” means a device that is used by a person to filter air before it enters that person's respiratory system; "Stuck" means united; and "side" or "edge" in reference to the filter cartridge means a surface, or combination of surfaces, that resides wholly or partially between the main surfaces of a filter cartridge; and "side portion" means a portion that includes one side and that can include one or more portions of the main surfaces adjacent to the side. Summary of the invention
    [008] The present invention provides a new respirator that has a unique system for attaching a filter cartridge to a mask body. As with known respirators, the respirator of the invention comprises a mask body and one or more filter cartridges that are attached, or attachable, to the mask body. The invention differs from known respirators in that it also comprises a filter cartridge receptacle and a filter cartridge that has a first side portion that is capable of being plugged into the receptacle.
    [009] The present invention also provides a new method for manufacturing a respirator, such a method comprising: (a) providing a mask body that has a receptacle attached thereto; (b) providing a filter cartridge that has fixing means located on a side portion of the cartridge; and (c) plug the filter cartridge into the receptacle so that the fixing means engage with a corresponding part in the receptacle to cause the filter cartridge to be attached to the mask body through the receptacle.
    [010] The filter cartridge can be slid into the receptacle so that an audible “click” or other indication can occur, which tells the user that the two parts have been engaged.
    [011] The present invention is beneficial, as the cartridge can be inserted in the proper position while the mask body is being used by the user. Fixing can be achieved without the user visibly witnessing the actual engagement. The use of a receptacle and a fitting function makes it relatively easy for the user to attach the cartridge to the mask body. A side portion or end of the cartridge end is merely inserted into the receptacle, and the cartridge is pressed towards the rear of the receptacle. The cartridge slides in engagement with the receptacle. The audible click or other indication lets the user know what proper engagement has been achieved. Additionally, the invention allows an engagement where there is little spacing between the cartridge and the mask body. The respirator of the invention can therefore be more comfortable to use. The further away a cartridge resides from the mask body, the greater the resulting moment. Conventional respirators that use filter cartridges can present more torque on the user's neck and thus cause more discomfort to the user when the mask is worn for an extended period of time. The invention can also give way to additional distance from the mask body to other personal protective equipment, such as face shields and hearing protectors. A final benefit of the present invention is that the new method of attachment is quite distinct in appearance and appeal, giving the user the feeling of using a higher quality respirator and an unconventional design. Brief description of the drawings
    [012] Figure 1 is a perspective view of a respirator 10 according to the present invention.
    [013] Figure 2 is a perspective view of an assembled filter cartridge 12 and a filter cartridge receptacle 15 according to the present invention.
    [014] Figure 3 is a perspective view of a separate filter cartridge 12 and a filter cartridge receptacle 15 according to the present invention.
    [015] Figure 4 is a perspective view of a fixing mechanism for a filter cartridge receptacle 15 according to the present invention.
    [016] Figure 5 is a rear perspective view of a second embodiment of a filter cartridge 12 and a receptacle 15 according to the present invention.
    [017] Figure 6 is a front perspective view of a second embodiment of the filter cartridge 12 being inserted into the receptacle 15 according to the present invention.
    [018] Figure 7 is a front perspective view of a third embodiment of an assembled filter cartridge 12 and a filter cartridge receptacle 15 according to the present invention.
    [019] Figure 8 is a rear perspective view of a third embodiment of an assembled filter cartridge 12 and a filter cartridge receptacle 15 according to the present invention.
    [020] Figure 9 is a rear perspective view of a third embodiment of a filter cartridge 12 separated from the filter cartridge receptacle 15 according to the present invention.
    [021] Figure 10 is a front perspective view of a fourth embodiment of a filter cartridge 12 attached to a filter cartridge receptacle 15 according to the present invention.
    [022] Figure 11 is a rear perspective view of a fourth embodiment of an assembled filter cartridge 12 and a filter cartridge receptacle 15 according to the present invention.
    [023] Figure 12 is a rear perspective view of a fourth embodiment of a filter cartridge 12 separated from the filter cartridge receptacle 15 according to the present invention.
    [024] Figure 13 is a front perspective view of a fifth embodiment of a filter cartridge 12 attached to a filter cartridge receptacle 15 according to the present invention.
    [025] Figure 14 is a rear perspective view of a fifth embodiment of an assembled filter cartridge 12 and a filter cartridge receptacle 15 according to the present invention.
    [026] Figure 15 is a rear perspective view of a fifth embodiment of a filter cartridge 12 separated from the filter cartridge receptacle 15 according to the present invention. Detailed Description
    [027] In the practice of the present invention, a respirator is provided that comprises a mask body and one or more filter cartridges that are attached, or attachable, to the mask body through a filter cartridge receptacle. The filter cartridge (s) has / has a first side portion that is capable of being plugged into the receptacle. The provision of a filter cartridge receptacle and a filter cartridge that can be attached to the mask body via the receptacle allows for a new cartridge fixation that does not require varying rotations or manipulations to create a fixation to the mask body. The cartridge can be quickly plugged into the receptacle and ready for use. In addition, as described in detail below, a quick disconnect can be achieved by the user simply by pushing a release mechanism such as one or more buttons.
    [028] Figure 1 illustrates an example of a respirator 10 that has features in accordance with the present invention. Respirator 10 can be worn by a person on his head, covering his nose and mouth. Respirator 10 has one or more filter cartridges 12 located on opposite sides of a mask body 14. The filter cartridges 12 can be removable or permanently attached to the mask body 14 via receptacle 15. The cartridges 12 filter the ambient air. before it passes into the interior gas space located within the mask body 14. The air, which becomes present in the interior gas space, is clean air that is suitable for inhalation by the user. The mask body 14 may include a rigid insert 16 and an elastomeric face contact portion 18. A mask body having such a construction is described in US patent 7,650,884 to Flannigan et al. and in US patent 5,062,421 to Burns et al. An exhalation valve 19 can be placed on the mask body to allow exhaled air to be rapidly purged from inside the mask body. Examples of exhalation valves that may be suitable for use in a mask body of the invention include valves which are disclosed in US patents 37,974, 6,584,974, 5,509,436, 5,325,892, and 7,849,856B2. Respirator 10 also has a strip 20 to support the mask body 14 on the wearer's head when the respirator is being used. The strip 20 can take various configurations, but it commonly includes one or more straps 22 that pass behind the user's head. Straps 22 may be joined by one or more buckles 23. Strip 20 may be, for example, a loose strip, as described in US patents 6,732,733B1 and 6,457,473 to Brostrom et al., 5,691,837 to Byram, and 5,237,986 to Seppala et al. A crown element can also optionally be employed to assist in supporting the mask body 14 on the user's head - see, for example, US patent application publication 2011 / 0220115A1 by Castiglione et al. and US patent 6,732,733 to Brostrom et al. The filter cartridges 12 which are attached to the mask body 14 have a first and second main surfaces 26 and 28 and a housing side wall 30. The housing side wall 30 extends from at least the first main surface 26 to at least the second main surface 28. The casing side wall 30 commonly fits within the perimeter of the layer (s) of the filter medium that is located thereon. On the side portion of the cartridge housing, one or both of the main surfaces 26 and 28 meet side 30. These surfaces 26 and 28 can be fluid permeable to allow ambient air to enter the filter cartridge 12. The main surfaces 26 and 28 typically have a surface area of about 30 to 200 square centimeters (cm2) each, more typically about 60 to 90 cm2. The respirator can be produced so that there is little or no spacing between the cartridges and the mask body, in particular between the second main surface 28 and the mask body 14. At its closest distance, the spacing between the cartridge and the mask mask body can be less than 1 cm (cm), less than 0.5 cm, and even less than 2 millimeters (mm), or flush with the mask body. As shown, the filter cartridges 12 are joined to the mask body 14 through the filter cartridge receptacle 15.
    [029] Figure 2 shows a front view of the filter cartridge 12 attached to the filter cartridge receptacle 15. The receptacle 15 includes a top surface 32, a front side 34, and a first and second opposite sides 36 and 38. The internal compartment, formed by the interior of these sides and surfaces, has a cross-sectional area that is slightly larger than the side or end portion 40 (Figure 3) of the filter cartridge 12, allowing the filter cartridge 12 to be inserted securely in receptacle 15. In this way, fitting of the mask body 14 to the filter cartridge 12 can be achieved by inserting a male end 40 of the filter cartridge into the female receptacle 15 which is attached to the mask body 14.
    [030] As shown, the filter cartridge 12 can be curved from the front to the rear. The cartridge can also be curved from the top to the bottom, or in both directions. A curved filter cartridge can improve user visibility. An example of a filter cartridge that may have the general shape or construction suitable for use in connection with the present invention is shown in patent application US 12 / 784,182, entitled Method of Making filter Cartridge Having Roll-based Housing Sidewall, by Billingsley et al. An example of a full space that can be used in the filter cartridge is shown in US patent application 2007/0144123 by Angadjivand et al. The filter cartridge contains a filter medium that can include one or more layers of particulate and / or gaseous filter medium. The particulate filter medium is produced to remove particles that are suspended in the ambient air, and the gaseous medium is designed to remove vapors that are suspended in it. The filtration layer can come in a variety of shapes and forms, and is typically about 0.2 millimeters (mm) to 1 centimeter (cm) thick, and it could be a generally flat blanket, or it could be corrugated to provide an exhausted surface area - see, for example, US patents 5,804,295 and 5,656,368 to Braun et al. The filtration layer can also include multiple layers of filtration joined by an adhesive or any other suitable means. The filter material could also include a series of parallel channels, as described in US patents 6,752,889 and 6,280,824 to Insley et al. Essentially any suitable material that is known (or subsequently developed) for the formation of a filter layer can be used for the filter material. Melt-spun fiber blankets, such as those taught in Wente, Van A., Superfine Thermoplastic Fibers, 48 Indus. Engn. Chem., 1342 et seq. (1956), especially when in a persistently electrically charged form (electret) they are especially useful (see, for example, US patent No. 4,215,682 to Kubik et al.). These fibers produced by extrusion in blocks with high speed hot air (meltblown) can be microfibers that have an effective fiber diameter of less than about 20 micrometers (pm) (called BMF for “blown microfiber”). The effective diameter of the fiber can be determined according to The Separation Of Airborne Dust Particles by Davies, CN, Institution Of Mechanical Engineers, London, United Kingdom, Annals 1B, 1952. BMF blankets containing fibers formed from polypropylene, poly (4-methyl-1-pentene), and combinations thereof are commonly used. The electrically charged fibrillated film fibers as presented in van Turnhout, US patent No. Re. 31.285, may also be suitable, as well as fibrous rosina-wool blankets and blankets made of glass fibers or blown by solution, or electrostatically sprinkled fibers, especially in the form of microfilm. The electrical charge can be imparted to the fibers by contacting the fibers with water, as shown in US patents 6,824,718 by Eitzman et al., 6,783,574 by Angadjivand et al., 6,743,464 by Insley et al., 6,454,986 and 6,406,657 by Eitzman et al. and 6,375,886 and 5,496,507 by Angadjivand et al. The electrical charge can also be given to the fibers by corona charge, as shown in US patent No. 4,588,537 to Klasse et al. or by triboelectric charge, as shown in US Patent No. 4,798,850 to Brown. In addition, additives can be included in the fibers to enhance the filtration performance of webs produced through the hydrocarbon process (see U.S. Patent No. 5,908,598 to Rousseau et al.). Fluorine atoms, in particular, can be arranged on the surface of the fibers in the filter layer to optimize filtration performance in an oil mist environment - see US patents 6,398,847B1, 6,397,458B1, and 6,409,806B1 to Jones et al. Typical base weights for the BMF electret filtration layers are about 10 to 100 grams per square meter. Compacted beds of active particulate can also be used as well as permeable formatted structures of active particulate which are held together with, for example, PSA microparticles - see US patent 6,391,429 to Senkus et al. - or bound sorbent particulate, as described in US patent 5,033,465 to Braun et al. An example of a fibrous matrix containing active particulate is shown in US patent 7,501,012B2 to Tatarchuk et al. The active particulate that can be used in the filters of the present invention include particles or granules that are suitable to perform some action or function attributable to some characteristic or property, including changing chemical properties such as reaction, catalysis, and ion exchange, and / or properties physical features such as high surface area, porosity, and relatively small size and shape. An example of an active particulate is particles that interact with components in a fluid to remove or change its composition. The components in the fluid can be absorbed into or into the active particulate, or they can be reacted to make its composition more favorable. The active particulate can therefore be adsorbent, catalytic, or reactive. Examples of active particulate materials that can be used in conjunction with the present invention include absorbent microparticulate granules, such as active carbon, chemically treated surface activated carbon, alumina, silica gel, bentonite, kaolin diatomaceous earth, pulverized zeolites (both natural as synthetic), ion exchange resins and molecular sieves, and particulates as catalytic particles and particles containing encapsulated compounds. Trivial active particulates include activated carbon, chemically treated coal, and alumina particulate. Examples of commercially available activated carbon that can be used in the present invention include Kuraray 12 x 20 type GG (available from Kuraray Chemical Corporation, Osaka, Japan and Calgon 12 x 30 URC available from Calgon Carbon Corporation, Pittsburgh, Pennsylvania, USA. Patents that describe various types of active particulates that can be used in the present invention include Patents 7,309,513 issued to Brey et al., And 7,004,990 and 6,391,429 issued to Senkus et al., US Patents 5,763,078 granted to Braun et al., and 5,496,785 granted to Abler. Coating blankets can also be used to protect the filter layers. Coating blankets can be produced to have few fibers that protrude from the surface of the blanket after processing, to have a smooth outer surface Examples of coating sheets that can be used in the present invention are shown, for example, in US patent 6,041,782 to Angadjivand, in US patent 6,123,077 to Bostock et al., And WO 96 / 28216A to Bostock et al. The filter cartridge may also have a sensor located on the side of the cartridge to show the user when the cartridge's service life has been reached - see US patent application 2008/0063575 by Rakow et al.
    [031] Figure 3 shows that the male end 40 of the filter cartridge 12 can be produced to have one or more openings 42 arranged therein that would fit with retractable notches 44 (Figure 4) in the enclosure 15. In use, the air that passes through at least one of the first and second main surfaces 26 and 28 of the filter cartridge 12 enters a full space that is in fluid communication with the opening 46 in the bayonet-type socket 48. Thus, the socket of the bayonet type 48 can contribute to both fluid communication and fastening means. The conduit 42 on the side wall 50 allows air to pass from the full space inside the cartridge to the receptacle 15. The location of the outlet 42 on the side 50, opposite the main surface 28, can enlarge the effective filtering area on the cartridge surface. filter 12, which can result in improved product performance.
    [032] Figure 4 shows that receptacle 15 may include one or more manually responsive buttons 52 that cause retractable notches 44 to be disconnected from opening 42 on the first side 40 of filter cartridge 12. When buttons 52 are pressed in towards each other, the notches 44 move similarly towards each other to disconnect from an internal surface of the side wall 50, allowing the first end 40 of the cartridge 12 to be manually pulled from the inside of the receptacle. The disconnect mechanism used in the present invention, which includes buttons 52, can be spring-loaded to allow strong fixation to be achieved. As shown in Figure 4, the receptacle 15 can have a fluid outlet opening 46 'located on the front side 34 of the receptacle 34 instead of in a bayonet-type fitting 48 (Figure 3) to allow air to pass inwards of the mask body.
    [033] Figures 5 and 6 show an alternative embodiment for attaching a filter cartridge 12 to a mask body 14. In this embodiment, the receptacle 15 is integral with the mask body 14. The cartridge 12 has a loop 53 that attaches to a removable clip on the cartridge fixing mechanism located inside receptacle 15. To remove filter cartridge 12, a release button 54 can be pressed to disengage the internal clip from cartridge loop 53. In this embodiment, air clean passes from an opening 42 on the front side 34 of the filter cartridge 12 through an adjacent opening 46 'in the receptacle 15 and then into the internal gas space of the mask body 14. In this embodiment, the opening 42 faces for opening 46 'and does not use a bayonet fitting to secure receptacle 15 to the mask body. Nor does air pass through an opening in the bayonet fitting to enter the mask body. Air passes directly from the opening into the receptacle to a passage that leads to the internal gas space of the mask body.
    [034] Figures 7 to 15 show alternative modalities of means for fixing and disconnecting filter cartridges 12 in and of receptacles 15 according to the present invention. In the embodiment shown in Figures 7 to 9, the receptacle 15 has a fixing mechanism that includes a movable tab 55 that the user pulls to disengage the filter cartridge 12 from the receptacle 15. When the tab 55 is pulled away from the face inward 56 (Figure 8) of the receptacle 15, the fixation tab 58 retracts inward to disengage from the projected lip 60 (Figure 9) located at the insertion end 40 of the filter cartridge 12. Figures 10 to 12 show a modality having one or more tabs 62 on opposite sides of receptacle 15, which can be pressed towards each other to cause the projected flanges 64 to disconnect from their respective edges 66 (Figure 12) located at the first end 40 of the cartridge filter 12. Figures 13 to 15 show an embodiment where the filter cartridge / receptacle engaging mechanism 12/15 includes a latch 68 on receptacle 15, such latch 68 being able to be opened to make the engaging surface disconnect 70 from the flange 72 located at the first end 40 of the filter cartridge 12. When inserting the filter cartridge 12 into the receptacle 15, the flange 72 causes the lock to be pushed out until the flange 72 passes under the lock 70. Once the cartridge is in its desired position, lock 70 engages flange 72 to cause the first end 40 of cartridge 12 to be attached to receptacle 15. As in other embodiments, the locking mechanism can be spring-loaded to provide an audible click to let the user know that proper engagement has been achieved. In addition to, or in place of, an audible click, the means for indicating proper attachment can be, for example, a visible indicator such as a flag or a colored marker. Example
    [035] A filter cartridge that has a loop and a fastening mechanism that includes a receptacle, a clamp, and a release button has been produced, which resembles the filter cartridge shown in Figure 5. The loop, the receptacle, the clip and button were created using the rapid prototype stereolithography. The filter cartridge contained several layers of filter medium that were cut to a shape that corresponds to the outline of the casing sidewall. The cartridge contained a first and second main outer surfaces through which the ambient air passed to enter the internal gas space after passing through the filter medium. The filter medium contained four layers of particulate filter medium and four layers of gaseous filter medium. The layers of filter medium were sealed along the edge to a side wall of cardboard wrapping using a hot melt adhesive. The first and second main surfaces each had an exposed surface area of 69 cm2. The loop structure was pressed into the filter media of the cartridge, with the loop feature protruding from an opening located on the side of the cartridge. The clamp and release button were mounted on the receptacle to produce the fixing mechanism. The receptacle was attached to the mask body. The assembled respirator was then placed, and the filter cartridge was plugged into the receptacle by sliding the engaging side towards a rear part of the receptacle. In engagement, the second main surface of the filter cartridge was spaced in relation to the mask body at 0.5 mm at its closest spacing. The filter cartridge was then removed from the receptacle by pressing the release button. This operation was performed by different test subjects and demonstrated that the invention provided a new, safe and convenient method of fixing and disconnecting the filter.
    权利要求:
    Claims (19)
    [0001]
    1. Respirator FEATURED by the fact that it comprises: a mask body; a female filter cartridge receptacle that is attached directly to the mask body; and a filter cartridge comprising first and second main surfaces and a male end, where at least a portion of the male end is disposed between the first and second main surfaces, and where the male end is capable of being plugged into the cartridge receptacle female filter; wherein the spacing between the second main surface of the filter cartridge and the mask body is less than 1 cm at a closer distance between the second main surface and the mask body.
    [0002]
    2. Respirator, according to claim 1, CHARACTERIZED by the fact that the receptacle is capable of being removably attached to the mask body.
    [0003]
    3. Respirator according to claim 2, CHARACTERIZED by the fact that the receptacle includes a means for attaching the receptacle to the mask body.
    [0004]
    4. Respirator, according to claim 1, CHARACTERIZED by the fact that the receptacle is integral with the mask body.
    [0005]
    5. Respirator according to claim 1, CHARACTERIZED by the fact that the second main surface is flush with the mask body.
    [0006]
    6. Respirator, according to claim 1, CHARACTERIZED by the fact that the filter cartridge does not need to be rotated or manipulated beyond being slid to create a fixation to the mask body receptacle.
    [0007]
    7. Respirator according to claim 1, CHARACTERIZED by the fact that the filter cartridge can be disengaged by the user simply by pushing a disengagement mechanism.
    [0008]
    8. Respirator according to claim 7, CHARACTERIZED by the fact that the disengagement mechanism comprises a button, flap or a latch.
    [0009]
    9. Respirator according to claim 7, CHARACTERIZED by the fact that the disengagement mechanism is a release button.
    [0010]
    10. Respirator according to claim 1, CHARACTERIZED by the fact that the respirator comprises a fixing mechanism to fix the cartridge to the receptacle, the fixation mechanism being spring loaded.
    [0011]
    11. Respirator according to claim 1, CHARACTERIZED by the fact that one or both of the main surfaces are fluid-permeable to allow ambient air to enter the filter cartridge to be filtered, and in which the first and second main surfaces each has a surface area of 60 to 90 square centimeters.
    [0012]
    12. Respirator according to claim 11, CHARACTERIZED by the fact that the filter cartridge is curved from front to back.
    [0013]
    13. Respirator according to claim 12, CHARACTERIZED by the fact that the filter cartridge is curved from side to side.
    [0014]
    14. Respirator according to claim 1, CHARACTERIZED by the fact that the filter cartridge has an opening located at the male end of the filter cartridge, the opening allowing clean air to pass through the filter cartridge into an interior gas space Respirator.
    [0015]
    15. Respirator, according to claim 14, CHARACTERIZED by the fact that the opening is located in front of the side wall of the filter cartridge housing.
    [0016]
    16. Respirator, according to claim 1, CHARACTERIZED by the fact that the second main surface of the filter cartridge faces the mask body.
    [0017]
    17. Respirator CHARACTERIZED by the fact that it comprises: a mask body, first and second female filter cartridge receptacles that are each attached to the mask body; and a first filter cartridge comprising a male end plugged into the first female filter cartridge receptacle and a second filter cartridge comprising a male end plugged into a second female filter cartridge receptacle such that the first and second filter cartridges are located on sides opposites of the mask body, wherein each of the first and second filter cartridges further comprises a first main surface and a second main surface, wherein at least a portion of the male end of each of the first and second filter cartridges is arranged between the respective first and second main surfaces, where both the first main surface and the second main surface of each of the first and second filter cartridges are fluid permeable; wherein the spacing between the second main surface of at least one of the first and second filter cartridges and the mask body is less than 1 cm at least at the closest distance between the second main surface and the mask body.
    [0018]
    18. Respirator according to claim 17, CHARACTERIZED by the fact that the respirator is configured such that air can pass through the first and second main surfaces of each of the first and second filter cartridges and a plenum located in each of the first and second filter cartridges which are in fluid communication with an opening in each of the respective first and second filter cartridge receptacles.
    [0019]
    19. Respirator according to claim 18, CHARACTERIZED by the fact that each of the first and second filter cartridges comprises a conduit formed at the male end that allows air to pass from the plenum to the respective filter cartridge receptacle.
    类似技术:
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    同族专利:
    公开号 | 公开日
    KR20140102682A|2014-08-22|
    US9393448B2|2016-07-19|
    AU2012339996B2|2015-07-30|
    WO2013074337A1|2013-05-23|
    KR102127770B1|2020-06-29|
    EP2780086B1|2019-12-25|
    RU2014118729A|2015-12-27|
    RU2580997C2|2016-04-10|
    US20130125896A1|2013-05-23|
    JP2014533553A|2014-12-15|
    EP2780086A1|2014-09-24|
    CN104023797A|2014-09-03|
    CN104023797B|2018-04-20|
    JP6247222B2|2017-12-13|
    AU2012339996A1|2014-05-29|
    BR112014011730A2|2017-05-09|
    IN2014CN03539A|2015-10-09|
    EP2780086A4|2015-11-18|
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-11-26| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-06-30| B09A| Decision: intention to grant|
    2020-11-24| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/11/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/298,402|US9393448B2|2011-11-17|2011-11-17|Side plug-in filter cartridge|
    US13/298,402|2011-11-17|
    PCT/US2012/063801|WO2013074337A1|2011-11-17|2012-11-07|Side plug-in filter cartridge|
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