EP2716196B1 - Structure de soupape de savon liquide antifuite - Google Patents

Structure de soupape de savon liquide antifuite Download PDF

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Publication number
EP2716196B1
EP2716196B1 EP12187417.6A EP12187417A EP2716196B1 EP 2716196 B1 EP2716196 B1 EP 2716196B1 EP 12187417 A EP12187417 A EP 12187417A EP 2716196 B1 EP2716196 B1 EP 2716196B1
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EP
European Patent Office
Prior art keywords
soap
liquid soap
liquid
valve
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12187417.6A
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German (de)
English (en)
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EP2716196A1 (fr
Inventor
Chi-Chin Hsu
Kuo-Chou Lee
Tsan-Chang Huang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hokwang Industries Co Ltd
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Hokwang Industries Co Ltd
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Publication date
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Priority to EP12187417.6A priority Critical patent/EP2716196B1/fr
Publication of EP2716196A1 publication Critical patent/EP2716196A1/fr
Application granted granted Critical
Publication of EP2716196B1 publication Critical patent/EP2716196B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste, or the like
    • A47K5/14—Foam or lather making devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1097—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke

Definitions

  • the present invention relates to a liquid soap structure, and particularly to a liquid soap valve structure for preventing liquid soap leakage.
  • a soap supplying device is categorized into a manual soap discharge type and an automatic soap discharge type.
  • a manual soap supplying device usually includes a soap conduit.
  • the soap conduit communicates with a liquid soap container as well as a pressure device having a liquid soap pipe.
  • the liquid soap pipe includes a pressure receiving section having a liquid soap chamber, a pressure applying section movable relative to the pressure receiving section and to apply pressure to the pressure receiving section, and check valves respectively disposed at two ends of the liquid soap pipe.
  • the soap supplying device further includes a press section for a user to press thereupon to further operate the pressure receiving section. By butting the liquid soap chamber in the pressure receiving section through the pressure applying section, liquid soap in the liquid soap chamber is delivered and discharged to a hand of the user along the liquid soap pipe.
  • An automatic soap supplying device of the prior art usually incorporates the above manual soap supplying device, which cooperates with an additional motor-driven automatic press device.
  • the automatic press device operates at the press section or the pressure applying section, pressure is automatically applied on the pressure receiving section by the pressure applying section to achieve liquid soap supply.
  • a soap supplying device having a soap discharge opening facing downwards is developed.
  • a check valve device corresponding to a soap discharge opening is usually made of a plastic valve disposed at the soap discharge opening.
  • the plastic valve presses tightly against an inner wall of the soap discharge opening.
  • the plastic valve disengages from the inner wall to allow the liquid soap to pass through the liquid soap pipe to reach the soap discharge opening.
  • the strength of the elastic member needs to be reinforced to render even greater tightness between the plastic valve and the inner wall.
  • the increased strength of the elastic valve at the same time raises the level of force that needs to be applied for operating the pressure applying section.
  • a motor of a battery-driven automatic soap supplying device may not function properly due to insufficient power from the battery, such that the press section or the pressure applying section is not successfully propelled.
  • contact planes of the plastic valve and the soap discharge opening can easily become worn out.
  • a gap between the contact planes of the plastic valve and the soap discharge opening is formed such that the liquid soap is guided through the gap to drip via the soap discharge opening.
  • the Taiwan Patent No. 579820 discloses a soap supplying device as described above.
  • the soap supplying device includes a liquid soap pipe.
  • the liquid soap pipe respectively has a liquid soap entrance and a liquid soap exit at two ends thereof.
  • the liquid soap pipe includes a roller valve at one end corresponding to the liquid soap entrance, and a plastic valve at one end corresponding to the liquid soap exit.
  • the plastic valve is pushed by an elastic member to butt against an inner wall around the liquid soap exit on the liquid soap pipe.
  • EP 2 082 809 A relates to a foam pump which defines the closest state of the art and includes a piston housing and a piston assembly received in the piston housing thereby defining a collapsible liquid chamber and a collapsible air chamber.
  • the piston assembly includes a premix chamber separated from both the collapsible liquid chamber and the collapsible air chamber by a premix chamber wall and fluidly communicating with both the collapsible liquid chamber and the collapsible air chamber through a mix aperture in the premix chamber wall.
  • a biasing member urges the piston assembly to a non-actuated position.
  • the foam pump is actuated by urging the piston assembly against the biasing member to an actuated position in which the collapsible air chamber and the collapsible liquid chamber are reduced in volume such that air and foamable liquid are expelled from their respective collapsible air chamber and collapsible liquid chamber through the mix aperture.
  • the simultaneous movement of the air and foamable liquid through the mix aperture causes a turbulent mixing thereof.
  • the primary object of the present invention is to provide a power-saving liquid soap valve for effectively eliminating liquid soap leakage.
  • the elastic washer may be made of a rubber material.
  • the soap discharging valve may include a limiting end located at one end of the axle strut relative to the tightening end.
  • the air supply valve may include a supporting plate linking with the soap discharging tube and having the air supply channel, and an elastic valve disposed on the supporting plate.
  • the elastic valve includes an outer ring pressing against a wall of the outer housing corresponding to the air chamber, and an elastic section covering the air supply channel.
  • the elastic valve may be made of a rubber material.
  • liquid soap conduit may include an elastic member encircling the soap entering tube and the soap discharging tube.
  • liquid soap conduit may include a check valve disposed at the liquid soap entrance.
  • the check valve may include a soap entering opening communicating with the liquid soap entrance and the soap entering tube, a stopping member formed at an outer diameter greater than an inner diameter of the soap entering opening, and at least one protruding section disposed in the soap entering opening to support the stopping member.
  • the stopping member may be made of a rubber material.
  • the elastic washer may include a deformation region surrounding the through hole.
  • the foam discharging tube may include a press section, and a pressure applying section linking with the press section to push the air supply valve.
  • the foam discharging tube may include a foaming filter disposed at the foam exit.
  • the liquid soap exit can be controlled to open or close.
  • the liquid soap chamber is pressurized to cause deformation of the elastic washer so that a passage allowing the liquid soap to pass through is generated.
  • the elastic washer is made of a rubber material, the liquid soap is more effectively prevented from leaking along the wall of the liquid soap exit.
  • the air supply valve of the present invention allows the soap discharging tube to restore to its initial position when being pressed by the elastic member.
  • the residual liquid soap at the foam exit and the gas-liquid mixing chamber is sucked back to the air chamber via the air supply channel, thereby preventing the residual liquid soap from dripping to the ground and maintaining tidiness of an operation environment.
  • FIG. 1 is a schematic diagram of an anti-leakage liquid soap valve structure according to an embodiment of the present invention cooperating with an automatic soap supplying device.
  • an anti-leakage liquid soap valve structure 100 according to an embodiment of the present invention is applied in cooperation with a wall-mounted automatic soap supplying device.
  • the wall-mounted automatic soap supplying device includes a liquid soap container 40 and an automatic press device 50.
  • the automatic press device 50 is disposed below the liquid soap container 40 and is powered by electricity.
  • the liquid soap container 40 includes an accommodating section 41 for accommodating liquid soap 42, and a liquid soap entrance 43 communicating with the accommodating section 41 and facing downwards.
  • the automatic press device 50 includes a holding region to hold the anti-leakage liquid soap valve structure 100 of the present invention.
  • the automatic press device 50 further includes a holding region formed correspondingly to the liquid soap entrance 43 to hold the anti-leakage liquid soap valve structure 100 and a butting element 51 that is controlled by a driving motor (not shown) to swing up and down.
  • a press section 33 is located at one end of the anti-leakage liquid soap valve structure 100 to engage with the butting element 51, thereby forming the automatic soap supplying device with an exit facing downwards.
  • FIGS. 2 and 3 show exploded views of an anti-leakage liquid soap valve structure of the present invention
  • FIG. 4A shows a schematic diagram of gas-liquid mixture in an anti-leakage liquid soap valve structure of the present invention.
  • an anti-leakage liquid soap valve structure 100 of the present invention includes a liquid soap conduit for accommodating the liquid soap 42 in the liquid soap container 40 and discharging the liquid soap 42 by pressure, an air conduit for accommodating air and discharging the air by pressure, and a foam discharging tube 30 for receiving and mixing the liquid soap 42 of the liquid soap conduit and the air of the air conduit to produce a foamed liquid soap.
  • the liquid soap conduit includes a soap entering tube 212 communicating with the liquid soap entrance 43 to receive the liquid soap 42, a soap discharging tube 24 communicating with the soap entering tube 212 and having a liquid soap chamber 243 to allow the soap entering tube 212 to push forwards, a liquid soap exit 244 located at one end of the soap discharging tube 24 relative to the liquid soap entrance 43, a soap discharging valve 25, and a positioning member 26 located at the liquid soap exit 244 to clamp the soap discharging valve 25 with the liquid soap exit 244 from two sides.
  • the soap discharging valve 25 includes an elastic washer 255 disposed at the liquid soap exit 244, and a pressing member pressing against an inner junction plane of the elastic washer 255.
  • the air conduit includes an outer housing 20 encircling the liquid soap conduit to form an air chamber 28 therewith, an air exit located at one side of the air chamber 28, and an air supply valve linking with the soap discharging tube 24 and discharging the air from the air chamber 28 to the air exit 245.
  • the outer housing 20 is formed by an upper half 21 and a lower half 21.
  • the air supply valve includes at least one air supply channel 242 for discharging the air in the air chamber 28 towards the other side of the air chamber 28.
  • the foam discharging tube 30 includes a gas-liquid mixing chamber 311 located at the liquid soap exit 244 and the air exit 245 and formed by an encircling soap chamber wall 31, a foam exit 35 communicating with the gas-liquid mixing chamber 311, and a foaming filter 34 disposed at the foam exit 35.
  • the foam discharging tube 30 includes a pressure applying section 32 linking with the press section 33 to push the air supply valve.
  • the outer housing 20 includes a limiting section 221 that butts the pressure applying section 32 to limit the pressure applying section 32 within the outer housing 20.
  • the liquid soap conduit includes an elastic member 29 encircling the soap entering tube 212 and the soap discharging tube 24.
  • the elastic member 29 has two ends butting against the inner wall of the air chamber 28 and connecting to the soap discharging tube 24.
  • the elastic washer 255 has a through hole 256.
  • the pressing member includes an axle strut 254 penetrating through the through hole 256, a tightening end 251 connected to the axle strut 254 to press against an inner junction plane of the elastic washer 255 corresponding to the liquid soap entrance 43, and a limiting end 257 located at the axle strut 254 relative to the tightening end 251.
  • the elastic washer 255 includes a deformation region 258 surrounding the through hole 256 to promote deformation of the elastic washer 255.
  • the tightening end 251 includes at least two butting members 252 butting against one side of the elastic washer 255 corresponding to the liquid soap entrance 43, and at least one spacing region 253 formed between the two butting members 252.
  • the soap discharging valve 25 of the liquid soap conduit forms an exit for allowing the liquid soap 42 to pass through the deformation thereof.
  • the pressing member of the soap discharging valve 25 is pressed to move downwards, and further presses the through hole 256 to deform and expand until the elastic washer 255 contacts the limiting end 257.
  • the spacing region 253 between the two butting members 252 communicates with the expanded through hole 256 to form a passage for the liquid soap 42 to pass through.
  • the elastic washer 255 is preferably made of a rubber material. As the rubber material expands when being humidified, the elastic washer 255 is able to more steadily fit around the axle strut 254 to prevent the liquid soap 42 from leaking via the through hole 256.
  • the liquid soap conduit further includes a check valve 10 disposed at the liquid soap entrance 43.
  • the check valve 10 includes a soap entering opening 11 communicating with the liquid soap entrance 43 and the soap entering tube 212, a stopping member 12 formed at an outer diameter greater than an inner diameter of the soap entering opening 11, and at least one protruding section 211 disposed in the soap entering opening 11 to support the stopping member 12.
  • the stopping member 12 is preferably made of a rubber material.
  • An airtight ring 23 is disposed between the soap entering tube 212 and the soap discharging tube 24 to separate the liquid soap chamber 243 and the air chamber 28.
  • the liquid soap 42 in the liquid soap chamber 243 flows towards the liquid soap entrance 43 and the liquid soap exit 244.
  • the check valve 10 disposed at the liquid soap entrance 43 moves towards the liquid soap entrance 43 due to the pressure in the liquid soap chamber 243. Since the outer diameter of the stopping member 12 is greater than the inner diameter of the soap entering opening 11, the stopping member 12 blocks on the soap entering opening 11 to allow the liquid soap 42 to flow towards the liquid soap exit 244.
  • the air supply valve includes a supporting plate 241 and an elastic valve 27.
  • the supporting plate 241 is linked with the soap discharging tube 24, and includes the air supply channel 242.
  • the elastic valve 27 includes an outer ring 271 pressing against a wall of the outer housing 20 corresponding to the air chamber 28, and an elastic section 272 covering the air supply channel 242.
  • the outer ring 271 presses tightly against the wall of the air chamber 28, such that the air pushes the elastic section 272 covering the air supply channel 242 through the air supply channel 242.
  • the elastic valve 27 is preferably made of a rubber material for not only tightly pressing against the wall of the air chamber 28 but also avoiding a wearing issue of hard materials.
  • FIGS. 4A to 4C are schematic diagrams of gas-liquid mixture as well as a corresponding gas-liquid mixing path in an anti-leakage liquid soap valve structure of the present invention.
  • the pressure applying section 32 butts against the limiting section 221 of the outer housing 20, and the air supply valve and the soap discharging tube 24 linked with the pressure applying section 32 stay at the initial positions.
  • the elastic member 29 is dilated, and a check valve at one end of the liquid soap entrance 43 is rested on and supported by the protruding section 211. At least one gap is formed between the check valve and the protruding section 211, so that the liquid soap 42 passes through the gap to fill the liquid soap chamber 243.
  • the liquid soap chamber 243 currently does not receive any pressure, the through hole 256 of the soap discharging valve 25 is in contact with the surrounding wall of the axle strut 254, and the liquid soap 42 is confined within the liquid soap chamber 243.
  • the pressure applying section 32 is driven by the press section 33 to move upwards to push the air supply valve and to compress the elastic member 29, such that the elastic member 29 is deformed and stores elasticity.
  • the soap entering tube 212 exerts pressure to the liquid soap chamber 243 in the soap discharging tube 24.
  • the check valve at one end of the liquid soap entrance 43 moves towards the liquid soap entrance 43 and butts on the soap entering opening 11, so that the liquid soap 42 in the liquid soap chamber 243 does not enter the liquid soap container 40.
  • the liquid soap 42 when the liquid soap chamber 243 is pressed, the liquid soap 42 is prohibited from moving towards the liquid soap entrance 43. At this time, the liquid soap 42 can only flow towards the liquid soap exit 244 to exert pressure to the soap discharging valve 25.
  • the soap discharging valve 25 receives pressure and is affected by the pressing member, it moves downwards to cause deformation of the elastic washer 255, such that the through hole 256 on the elastic washer 255 expands downwards.
  • a passage is formed between the spacing region 253 between the butting members 252 on the pressing member and the expanded through hole 256 so as to allow the liquid soap 42 to enter the liquid soap exit 244 via the soap discharging valve 25 and further enter the gas-liquid mixing chamber 311 through the liquid soap exit 244.
  • air supply valve moves towards an upper end of the air chamber 28
  • air is only allowed to pass through the air supply channel 242 on the supporting plate 241 since the outer ring 271 of the elastic valve 27 presses tightly against the wall of the air chamber 28.
  • the air passing through the air supply channel 242 pushes the elastic section 272 covering the air supply channel 242, and is then forwarded towards the air exit 245 to allow the air to enter the gas-liquid mixing chamber 311 to mix with the liquid soap 42.
  • the foaming filter 34 disposed on the foam exit 35, the liquid soap 42 is thoroughly mixed with the air to form foamed liquid soap which is then sent to a hand of a user via the foam exit 35.
  • FIG. 5 shows a schematic diagram of withdrawing liquid soap 42 by an anti-leakage liquid soap valve structure according to the present invention.
  • the liquid soap exit can be controlled to open or close.
  • the liquid soap chamber is pressurized to cause deformation of the elastic washer so that a passage allowing the liquid soap to pass through is generated.
  • the elastic washer is made of a rubber material, the liquid soap is more effectively prevented from leaking along the wall of the liquid soap exit.
  • the air supply valve of the present invention allows the soap discharging tube to restore to its initial position when being pressed by the elastic member.
  • the residual liquid soap at the foam exit and the gas-liquid mixing chamber is sucked back to the air chamber via the air supply channel, thereby preventing the residual liquid soap from dripping to the ground and maintaining tidiness of an operation environment.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Check Valves (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (12)

  1. Un distributeur de savon liquide, comprenant une structure de la valve de savon liquide anti-fuite (100) et un conteneur de savon liquide (40) fixé à la structure de valve de savon liquide anti-fuite (100); le conteneur de savon liquide (40) comprenant une section de collecte (41) destinée à collecter du savon liquide (42), et une entrée de savon liquide (43) communiquant avec la section de collecte (41) et vers le bas; la structure de soupape de savon liquida anti-fuite étant caractérisée par:
    un conduit de savon liquide, comprenant:
    un tube d'entrée de savon (212), communiquant avec l'entrée de savon liquide (43) pour recevoir le savon liquide (42):
    un tube de libération de savon (24), communiquant avec le tube d'entrée de savon (212), comprenant une chambre de savon liquide (243) pour permettre au tube d'entrée de savon (212) de pousser vers l'avant, et une sortie de savon liquide (244) située à une extrémité du tube de libération de savon (24) relativement à l'entrée de savon liquide (43); et
    une soupape de libération de savon (25), comprenant une rondelle élastique (255) disposée à la sortie de savon liquide (244), et un élément de pression pressant le plan de jonction interne de la rondelle élastique (255),
    un conduit d'air, comprenant:
    un boîtier extérieur (20), entourant le conduit de savon liquide pour former une chambre à air (28) entre les deux;
    une sortie d'air (245), située sur un côté de la chambre à air (28), et
    une soupape d'alimentation en air, en liaison avec le tube de libération de savon (24), libérant l'air depuis la chambre à air (28) vers la sortie à air (245), comprenant au moins un canal d'amenée d'air (242) pour évacuer l'air de la chambre à air (28) à l'autre côté de la chambre à air (28) ; et
    un tube de libération de mousse (30), comprenant:
    une chambre de mélange gaz-liquide (311), située à la sortie de savon liquide (244) et la sortie d'air (245); et
    une sortie de mousse (35), communiquant avec la chambre de mélange gaz-liquide (311) ;
    dans lequel la rondelle élastique (255) comprend un trou traversant (256); l'élément de pression comprenant une barre de liaison (254) passant au travers du trou traversant (256), et une extrémité de serrage (251) reliée à la barre de liaison (254) pour presser contre un plan de jonction intérieur de la rondelle élastique (255) correspondant à l'entrée de savon liquide (43) ;
    l'extrémité de serrage (251) comprenant au moins deux éléments d'aboutement (252) butant sur un côté de la rondelle élastique (255), et au moins une région d'espacement (253) formée entre les deux éléments d'aboutement (252) au moins,
  2. Le distributeur de savon liquide selon la revendication 1 dans lequel la rondelle élastique (255) est faite en un matériau de caoutchouc.
  3. Le distributeur de savon liquide selon l'une quelconque des revendications 1 à 2, dans lequel la soupape de libération de savon (25) comprend une extrémité de limitation (257) située à une extrémité de la barre de liaison (254) correspondant à l'extrémité de serrage (251).
  4. Distributeur de savon liquide selon l'une quelconque des revendications 1 à 3, dans lequel la rondelle élastique (255) comprend une région de déformation (258) qui entoure le trou traversant (256).
  5. Distributeur de savon liquide selon l'une quelconque des revendications 1 à 4, dans lequel la soupape d'alimentation d'air comporte :
    une plaque de support (241) en liaison avec le tube de libération de savon (24), y compris le canal d'amenée d'air (242); et
    une vanne élastique (27), disposée sur la plaque de support (241), comprenant une bague extérieure (271) pressant sur une paroi du boîtier extérieur (20) correspondant à la chambre à air (28), et une section élastique (272) recouvrant le canal d'amenée d'air (242).
  6. Distributeur de savon liquide selon la revendication 5, dans lequel la vanne élastique (27) est réalisée en caoutchouc.
  7. Distributeur de savon liquide selon l'une quelconque des revendications 1 à 6, dans lequel le conduit de savon liquide comprend un élément élastique (29) entourant le tube d'entrée du savon (212) et le tube de libération de savon (24).
  8. Distributeur de savon liquide selon l'une quelconque des revendications 1 à 7, dans lequel le conduit de savon liquide comprend un clapet anti-retour (10) disposé à l'entrée du savon liquide (43).
  9. Distributeur de savon liquide selon la revendication 8, dans lequel le clapet anti-retour (10) comprend une ouverture d'entrée de savon (11) communiquant avec l'entrée de savon liquide (43) et le tube d'entrée de savon (212), un élément d'arrêt (12) formé à un diamètre extérieur supérieur au diamètre interne de l'ouverture de savon entrée (11), et au moins une section en saillie (211) disposée dans l'ouverture d'entrée du savon (11) à l'appui de l'élément d'arrêt (12).
  10. Distributeur de savon liquide selon la revendication 9, dans lequel l'élément d'arrêt (12) est réalisé en caoutchouc.
  11. Distributeur de savon liquide selon l'une quelconque des revendications 1 à 10, dans lequel le tube de libération de mousse (30) comporte une section de pressage (33), et une section d'application de pression (32) en liaison avec la section de pressage pour la soupape d'alimentation en air.
  12. Distributeur de savon liquide selon l'une quelconque des revendications 1 à 11, dans lequel le tube de libération de mousse (30) comprend un filtre de libération de mousse (34) disposé à la sortie de la mousse (35).
EP12187417.6A 2012-10-05 2012-10-05 Structure de soupape de savon liquide antifuite Active EP2716196B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12187417.6A EP2716196B1 (fr) 2012-10-05 2012-10-05 Structure de soupape de savon liquide antifuite

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Application Number Priority Date Filing Date Title
EP12187417.6A EP2716196B1 (fr) 2012-10-05 2012-10-05 Structure de soupape de savon liquide antifuite

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EP2716196A1 EP2716196A1 (fr) 2014-04-09
EP2716196B1 true EP2716196B1 (fr) 2014-12-10

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100490667B1 (ko) * 1996-01-31 2005-09-30 에어스프레이 인터내쇼날 비.브이. 다수의성분물질을적절히분배하는분무기
TWM291409U (en) * 2005-11-25 2006-06-01 Yih Tai Galss Ind Co Ltd Piston device and liquid/gas suction device using the piston device and foam generation device
US7850049B2 (en) * 2008-01-24 2010-12-14 Gojo Industries, Inc. Foam pump with improved piston structure
US8047403B2 (en) * 2008-02-08 2011-11-01 Gojo Industries, Inc. Bifurcated stem foam pump
PT2127581E (pt) * 2008-05-29 2011-03-11 Gojo Ind Inc Bomba de espuma actuada por tracção

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