Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3187960 A
Publication typeGrant
Publication dateJun 8, 1965
Filing dateMay 8, 1964
Priority dateMay 8, 1964
Publication numberUS 3187960 A, US 3187960A, US-A-3187960, US3187960 A, US3187960A
InventorsWilliam G Gorman
Original AssigneeSterling Drug Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Non-metallic pump dispenser
US 3187960 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)



' 3,187,960 NON-METALLIC PUMP DISPENSER William G. Gorman, East Greenbush, N.Y., assignor to Sterling Drug Inc., New York, N.Y., a corporation of Delaware Filed May 8, 1964, Ser. No. 365,952 t 12 Claims. (Cl. 222-321) Pump valves of the prior art and also valves used for aerosols and pressurized product-s including the metering of foam products all have some metallic parts in contact with the materials dispensed so that they are apt to deteriorate because of the action of the container chemicals with respect to the metal. Also most of the prior art valves of this nature leak if the device containing the valve is inverted.

It is therefore a principal object of the present invention to provide a pump valve made of plastic which is adaptable to pressurized materials as well as others, including foams, in which the materials to be dispensed do not at any time come' into contact with a metallic part, and in which the unit is completely sealed in closed position and cannot leak when inverted. 1 t

Further objects of the invention include the provision of a dispenser of the class described which comprises in general a ferrule to attach it to a container for the material to be dispensed, a tank, a body gasket for the tank, and a valve stem which is provided with resilient means toreturn it to its normal outwardly disposed, closed position, said stem having at its inner end a piston Working in a plastic metering chamber or the like in such a way as to provide a metered charge in the metering chamber when the valve stem is in its closed position, and including ports for the release of the material in the metering chamber upon retraction of actuation of the valve stem to an open discharge position while maintaining a new and irnproved type of wheel gasket closed,`said wheel `gasket opening upon return of the stem to its closed position to provide for an additional charge of material to be received in the chamber.

. Other objects of the invention include the provision of new and improved vent means for reestablishing equilibrium with the pressure of the atmosphere when the piston passes the same so as to provide for easy actuation of the valve stem under control of the resilient means therefor.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which:

FIG. l is a view in vertical section through the new valve construction showing the valve in closed Jrest position;

FIG. 2 is a similar view but showing the valve in open discharging position, and t FIG. 3 shows the piston of the valve returning toward closed position and causing the container content to enter the metering chamber.

In illustrating the invention, only so much-of the same has been shown a-s is necessary to explain the construction and operation thereof. To this end there is a ferrule which is of conventional construction usually being made of aluminum or some similar material and which is used to crimp the entire dispenser to the mouth of the bottle, jar, or other container to which it is to be` applied. The ferrnle is generally annular in most cases and extends inwardly as at 12 and then upwardly oncemore at 14 Y and again inwardly as at 16. The portion at 1,6 terminatesto define a central opening' 18 for the sliding disposition of the valve stem 20 which is plastic. ThisA valve stem has usually applied tothe exterior portion thereof a` thumbpiece, spray distributing apparatus, or the like, by which it may be depressed from the Vfully extended position of FIG. lto an inward position shown in FIG. 2,

United States Patent O position shown. In this position, the shoulder or stop 76` is raised slightly above the upper surface of the -piston lCe The stem is longitudinally hollow for most of its length as at 22 but it terminates at its inner end in a closed head 24. There is a port 26 closely associated therewith in a wall of the hollow stem, and this forms a passage providing communication between the hollow `stem 22 and the metering chamber which i-s here generally indicated at 28.

The ferrule at 12 holds an annular portion 30 of a plastic insert member 32 to a flange 34 of the plastic tank body 36, in turn holding this `to an annular body gasket 38, which in turn is held to the neck of the bottle, jar, or container, this construction holding all of these parts, i.e., the tank and the insert, in rigid connection with respect to the container.

The tank is substantially cylindrical as shown and it has a side wall 42 extending downwardly terminating in a nozzle-like member 44 holding a dip tube 46 which may extend generally to the bottom of the container or jar to which the valve is applied. Otherwise the wall of the tank is continuous and generally impervious except that it may be provided with a vent at 48 for a purpose to be described and it also is annularly reduced or indented at 50 so that there is an internal passage extending within the tank about the insert in the region of the vent 48. The insert also may have a corresponding vent 52 and it will be seen that these two vents communicate between the inside and the outside of the valve through the annular passage 50. The insert is slightly reduced in thickness in a cylindrical lowermost body portion 54 so that the annular passage Silis provided by the cooperating over-` lapping reduced portions of these walls.

The insert is open at its lower end and tightly rests at the peripheral edges thereof as at 56 on the enlarged rim of a wheel gasket 58. This wheel ygasket has a closed thickened portion 60 centrally thereof, with a thinner disc connecting it to the rim, there being a series of holes 62, 62 in the disc extending about the center. The thickened portion 60 inthe closed position of this valve rests against a knife edge portion 64 in the tank surrounding the opening 66 which provides communication through the dip tube to the metering chamber 28 when the wheel valve is opened.

The insert 32 has an inwardly directed an'ge at 68 which acts to guide the valve stem 20 in its sliding motion and also is a reaction point for a coil spring 70 which surrounds the valve stem and finds another reaction point in a ange 72 on the valve stem. Thus it will be seen that the spring 70 normally holds the valve stem in its extended closed position in FIG. 1 and has to be pressed in order to provide for the inward sliding motion of the valve stem to the open discharge position shown in FIG.

2. Also the ilange 72 finds a limiting point in the inwardly directed annular shoulder 74 on the insert and this action is shown in FIG. 2.

The stem 20 has a shoulder at 76 preferably annular and extending about the same, so that between the head 24 andthis shoulder 76 there is a reduced portion 78. This reduced portion extends through a piston generally indicated at and it has a waisted, rather elongated side wall which slidablyengages the inside surface of the insert. The thickness of the main body portion of the piston is such that it is slightly less than the extent of the reduced portion 78 extending between the head 24 and the shoulder 76 of the stem. The gaskets and piston may be of softer plastic than the other parts or of rubber.

With the parts as shown in FIG. 1 the valve is closed by rea-son of the spring 70 which holds it in the closed andthe port 26 is held closed within the central passage through the piston 82. As the stem 20 is pushed inwardly against the action of the spring 70, the shoulder or stop alavesa 7d engages the adjacent surface of the piston Sti, depressing the entire piston so that it slides inwardly with respect to the insert, but at the same time the port 26 becomes open (see FIG. 2) because it has communication with the inside of the metering chamber 2S through the indented portion 84 in the piston. This creates pressure on the contents of the metering chamber, whether it be liquid, gas or foam, andy this in turn holds the wheel gasket lat btight-ly closed against its knife edge lvalve seat 64. The contents of the metering chamber therefore clearly are expressed outwardly through the passage 22 in the stem Zitto whatever device or position is desired.

Therefore when this metered charge stops issuing from the stem, the operator will `release the stem and it will start to travel in the opposite Ydirection back to the closed position; As shown in FlG. 3, this causes a partial vacuum in the metering chamber which lifts the wheel gasket enough to cause the hole 62 to have free communication with .the passage at 66 and the dip tube 46 so that the metering chamber once more becomes filled. When the stem 2t? is returned to its original closed position, the first thing that happens is that the port Z6 once again closes by being obscured by the piston itself. Y

All of the parts of this pump except for the ferrule can be conveniently non-metallic so that the contents of the container nevertouches any kind of metal. Known plastics which are inert and have no deleterious effect onrthe contents will therefore not contaminate the contents of the container and also it will be `seen that the construction is such that there can be no possible leakage of any of the parts regardless of the inversion of the pump dispenser. The piston, of suitable softer material as respects the insert 32, actually acts as a gasket. The wheel gasket can also be made of suitable material so that it is firmly closed at all times except while being raised to allow the metering chamber 28 to become filled as described and as shown in FIG.' 3. The vents 48 and 52 are utilized to reestablish equilibrium with the pressure of the atmosphere but if a pressurized unit is used with this valve, these vents would not be needed. The spring 70 may of course be made ofmetallic material but this spring never comes in contact with the contents of the container and with the fparts all Vas tight as stated, being non-metallic and having suitable resilience, etc., the metering chamber will have the negative pressure described in order to cause refilling thereof, and the stem in its closed position holds the piston tightly in the position shown in FIG. l so that the vents and exit port are completely sealed.

It will be seen therefore that this invention is an improvement over prior art pump dispensers due to the fact that no metal ever comes in contact wtih the product used but at the same time metered amounts of material are provided, and the parts all operate positively. There can be no leakage and there can be no deleterious action with respect to the contents. Also in the event that the device'is to be used'with pressurized products, although it functions essentially as described above, itvwould be' especially useful for metering foams since it wouldexpel the product by a piston action as well as through expansion.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein` disclosed, otherwise than as set forth in the claims, but what I claim is:

l vl. A pump type of dispenser adapted to be mounted on the mouthof a container to pump out quantities of the contents of the container, said dispenser comprising means to attach the dispenser to the mouth of the container, a tank having a generally closed chamber extending `into lthe container, the tank having an entrance orifice into the chamber therein, the entrance orificefleading from the trance orifice' in the `reduced portion ofthe valvey stem.,

container'int'o the chamber, Va resilient valve member normally closing said yorifice but being capable of disengagement therefrom upon the provision of a negative pressure in the chamber,

a slidable valve stem extending from outside the dispenser into the tank chamber, said valve stem being generally hollow forming 'a passage substantially from end to end thereof, anV entrance port in a wall of the stem leading int-o the passage at the inner end thereof which is located generally within the chamber in the tank, means normally maintaining said stem in an outward inoperative position, said means yielding to allow said stem to be moved inwardly with relation to said chamber,

a piston, said piston engaging the' walls of the tank chamber andsealing the same, said pistonhaving a centralv aperture therein surrounding the valve stem and being positioned to normally close theentrance orifice thereof in the outward, inoperative position of said valve stem, said valve stem being movable relative to said piston to Ycause said entrance orifice thereof to become free of said piston to provide communication fnom the chamber within the tank to the passage in the valve stem," v and means on the valve stem engaging the ypiston and causing the same to move :inwardly with relation to said chamber exerting pressure on the contents thereof to force the latter thnough'the entrance port int-o the passage inthe valve stern while at the same time exerting pressure on the first-named valve, -maintaining the same in closed condition, y engagement means between the valve stem andthe piston to cause the piston to move in the opposite direction, the resilient means that returns the stem also thus moving the piston andcreating a negative pressure in the chamber causing the first-named valve to open, recharging the chamber. 2. The pump type of dispenser recited in claim 1 wherein the tank, piston, valve, and stem are all made of non- -metallic materials and comprise the-only parts of the dispenser that come in contact with the contents ofthe container at any time.

3. The pump type-of dispenser recited in claim 1 including an insert of non-metallic material located in said.

tank and lining the chamber thereof, and a stop on said insert limiting .the motion of the piston in an youtward direction.

4. The pump type of dispenser recited in claim 1 including an insert of non-metallic material located in said tank and lining the chamber` thereof, and a stop on said duced portion, the entrance orifice to said hollow valve stem being locatediri said reduced portion so that when the valve stem moves relative tothe Ipiston itmoves between positions where the valve orifice is closed by the piston or alternatively is free thereof for communication from the chamber to the* stem passage..

6. 'A pump dispenser comprising a tank, means to hold the tank in the mouth ofa container, an'orifice in the tank providing a passage between the contents of the oontainer andthe interior of the tank, a valve stem, said valve stem extending exteriorly ofsaidV dispenser body and having an open' outer endV and being hollow centrally thereof from its outer end vto a point adjacent the inner wall,

means normally holding saidvalve Vstem in its outwardmost position, means preventing-contact with a piston in the tank, means guiding the piston .for longitudinal motion with respect .jto said tank, resilient.

the contents of the container or chamber with kthe resilient means and including the piston, said piston having a central opening therein receiving the reduced portion of said valve stem, and normally covering the entrance orifice to said valve stem, said valve stem having a relative motion with respect to said piston when moved against the action of said resilient means to cause the orifice to move out of covered position with respect to said piston and providing communication between the chamber of the tank and Ithe interior passage of the valve stem, a valve in the chamber, said valve normally closing the passage from the container to the tank chamber, said valve being distortable under influence of a negative pressure in the chamber to uncover the lastnamed passage and thus provide for communication from the container to the interior of the chamber for recharging the chamber with the partial contents of the container on which the dispenser is mounted. 7. The pump dispenser recited in claim 6 wherein the Y tank, piston and valve stem are all made of non-metallic materials.

I8. The pump dispenser recitedin claim 6 wherein theY distortable valve comprises a disc-likevmember, means holding the same at the periphery thereof in fixed position, the center of the disc forming a closure for the orice in the tank, openings in the discwhich are effective to provide communication between the passage-from the container to the chamber `upon distortion of said disc so that the central portion thereof is removed from the orifice in the tank and allows flow of material therethrough.

9. The pump dispenser recited in claim 6 including an insert in said tank, stop means on said insert for limiting motion of said piston in one direction.

10. The pump dispenser recited in claim 6 including an insert in said tank, stop means on said insert for limiting moti-on of said piston in one direction, and means on the insert limiting the inward motion of the valve stem.

11. The pump dispenser recited in claim 6 including an insert in said tank, stop means on said insert for limiting motion of said piston in one direction and on the insert holding the disc valve in position.

12. The pump dispenser recited in claim 8 including means providing a passage for communication between the side of the piston opposite from the chamber with the interior of the container, said last-named passage being normally closed by the piston in its inoperative position.

References Cited by the Examiner UNITED STATES PATENTS 1,573,823 2/26 Gray 103-189 1,909,454 5/33 Brunner 103-188 X 1,982,887 12/34 Tanner 103-188 X 2,683,060 7/54 Wise et al. `103-225 X `3,131,646 5/64 Parrott 10B-188 FOREIGN PATENTS 942,161 4/ 5 6 Germany.

LOUIS J. DEMBO, Primary Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1573823 *Sep 28, 1925Feb 23, 1926Ellsworth GrayPump
US1909454 *Jan 7, 1932May 16, 1933Felix BrunnerFilling device for pasty matter
US1982887 *May 24, 1933Dec 4, 1934Tanner Warren APump
US2683060 *Apr 24, 1953Jul 6, 1954Sprayers & Nozzles IncSprayer and sprayer pump
US3131646 *Oct 15, 1962May 5, 1964Parco Products CoHand pump
DE942161C *Nov 24, 1953Apr 26, 1956Koepa Koelner Parfuemerie ApotBehaeltnis mit eingesetzter Kolbenpumpe zum Abgeben einstellbarer Fluessigkeitsmengen
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3333549 *Jun 23, 1965Aug 1, 1967Calmar IncLiquid dispenser
US3352463 *Oct 20, 1965Nov 14, 1967Robert M BerlerFluid dispenser
US3379136 *Aug 26, 1966Apr 23, 1968Diamond Int CorpLiquid dispenser
US3452905 *Feb 16, 1968Jul 1, 1969Leeds & MicallefSelf-sealing leak-proof pump
US3463093 *Jun 5, 1967Aug 26, 1969Erich Pfeiffer Kg MetallwarenfSimply operating push plunger pump housed in a container
US3500760 *Apr 22, 1968Mar 17, 1970Holmes T J CoPump for an atomizer or the like
US3500761 *Jul 1, 1968Mar 17, 1970Cook Chem CoControl valve for hand pumps
US3531224 *Apr 7, 1969Sep 29, 1970Cook Chem CoHand pump having free floating valve
US3563415 *Jun 4, 1969Feb 16, 1971Multi Drop Adapter CorpMultidrop adapter
US3753518 *May 7, 1971Aug 21, 1973L KutikPump with floating valve element
US3877617 *May 28, 1974Apr 15, 1975Precision Valve CorpPump with slide valve
US3908689 *Sep 7, 1973Sep 30, 1975Glen R WingateFree flow siphon pump and assembly
US3940028 *Sep 16, 1974Feb 24, 1976Beard Walter CPump
US3940029 *Dec 13, 1973Feb 24, 1976Thiokol CorporationRechargeable sprayer with improved valve system and charge cycle limit stop therefor
US3949910 *Aug 12, 1974Apr 13, 1976Precision Valve CorporationDispensing pump
US3991914 *May 29, 1975Nov 16, 1976The Risdon Manufacturing CompanyEasily assembled, leakproof liquid dispensing pump
US4023491 *Mar 10, 1975May 17, 1977Monarch Marking Systems, Inc.Ink fountain and supply system for a printing press
US4034900 *May 3, 1976Jul 12, 1977Ethyl CorporationSpray pump assembly
US4061250 *May 25, 1976Dec 6, 1977Tetsuya TadaDepress button type sprayer
US4063854 *Jun 1, 1976Dec 20, 1977Vca CorporationSpray pump assembly
US4113145 *Nov 20, 1975Sep 12, 1978Philip MeshbergDispensing unit for liquid and method of dispensing
US4154369 *Dec 29, 1977May 15, 1979L'orealNon-refillable dispensing container
US4161288 *Oct 5, 1976Jul 17, 1979Creative Dispensing Systems, Inc.Fluid dispenser method and apparatus
US4207807 *Aug 31, 1978Jun 17, 1980Oiles Industry Co., Ltd.Plastic air cylinder assembly
US4227650 *Nov 17, 1978Oct 14, 1980Ethyl Products CompanyFluid dispenser and nozzle structure
US4236651 *Aug 17, 1979Dec 2, 1980Trisa Burstenfabrik A.G.Dispenser device with valve piston pump
US4245967 *Aug 22, 1978Jan 20, 1981Establissements ValoisPump for a hand actuated device for producing an atomized spray
US4396132 *Aug 14, 1981Aug 2, 1983Christensen Kurt KApparatus and process for removing and dispensing liquid from a receptacle
US4405309 *Apr 21, 1981Sep 20, 1983Bioresearch Inc.Surgical drainage device with metered air pump
US4484908 *Feb 16, 1983Nov 27, 1984Bioresearch Inc.Method for relieving excess negativity in a drainage device
US4485943 *Mar 8, 1982Dec 4, 1984Joachim CzechDispenser for liquids or pasty products
US4489861 *May 21, 1979Dec 25, 1984Yoshino Kogyosho Co., Ltd.Manual liquid dispensing device
US4674659 *Feb 11, 1982Jun 23, 1987Leeds And MicallefUniversal sequential dispensing pump system
US4930670 *Apr 25, 1989Jun 5, 1990Smiley ChienPumping mechanism for dispensing lotion in bottle/container
US4986453 *May 16, 1989Jan 22, 1991The Pittway CorporationAtomizing pump
US4991747 *Oct 11, 1988Feb 12, 1991Risdon CorporationSealing pump
US5004123 *Aug 7, 1989Apr 2, 1991Stoody William RFluid dispenser with non-venting aspirator and bag
US5016783 *Jun 5, 1989May 21, 1991Anchor Hocking CorporationPump dispenser package
US5024355 *Dec 20, 1989Jun 18, 1991Societe Technique de Pulverisation--STEPDevice for dispensing a liquid or a cream in small-volume drops, and an associated dispensing assembly
US5100027 *Jul 23, 1990Mar 31, 1992L'orealDispensing unit for at least one product, a cosmetic product in particular, in cream, liquid or powder form
US5242089 *Jan 29, 1992Sep 7, 1993Calmar Inc.Miniature pump sprayer
US5301852 *Oct 1, 1992Apr 12, 1994Exo S.R.L.Manually operated pump for dispensing liquid or creamy substances at a predetermined constant pressure
US5337926 *Jul 22, 1993Aug 16, 1994The Procter & Gamble CompanySpray pump package employing multiple orifices for dispensing liquid in different spray patterns with automatically adjusted optimized pump stroke for each pattern
US5363993 *Dec 15, 1992Nov 15, 1994Sar S.P.A.Plastic dispenser for liquids or other substances
US5411185 *Jun 1, 1994May 2, 1995The Procter & Gamble CompanySpray pump package employing multiple orifices having an orifice selector system
US5613957 *Mar 11, 1994Mar 25, 1997Daniel PyApparatus for applying medicament to an eye
US5615806 *May 31, 1996Apr 1, 1997Calmar-Albert GmbhPlunger lock-up dispenser
US5655688 *Apr 28, 1995Aug 12, 1997Aptargroup, Inc.Atomizing pump with high stroke speed enhancement and valve system therefor
US5685869 *May 2, 1995Nov 11, 1997Daniel PyApparatus for applying medicament to an eye
US5850948 *Sep 13, 1996Dec 22, 1998Valois S.A.Finger-operable pump with piston biasing post
US5944702 *Sep 11, 1997Aug 31, 1999Instill & Co.Method for instilling a predetermined volume of medicament into an eye
US6045008 *Mar 17, 1999Apr 4, 2000Calmar-Monturas, S.A.Fluid pump dispenser
US6334549Mar 16, 2001Jan 1, 2002Saint-Gobain Calmar Inc.Fluid pump dispenser having product retraction feature
US6415959 *Oct 15, 1999Jul 9, 2002Rexam Sof AbLow capacity pump with enhanced compatibility
US6540116Jul 7, 2000Apr 1, 2003Rexam SofabLiquid dispenser having a two-part body
US6685062 *Sep 16, 2002Feb 3, 2004Yon Woo CorporationDispenser pump
US6962273 *May 16, 2003Nov 8, 2005Masatoshi MasudaCylinder and valve structures for liquid-dispensing containers
US7029249 *Dec 11, 2001Apr 18, 2006Rexam Dispensing SystemsElectronic micro-pump
US8434645Jan 15, 2010May 7, 2013Colgate-Palmolive CompanyDispensing container with pump fitment
US8631976Sep 23, 2010Jan 21, 2014Lumson S.P.A.Manually operated pump comprising an assembly for pressurization and dispensing of fluid
US8672192 *May 19, 2011Mar 18, 2014Ya-Tsan WangPush-type nozzle assembly
US20030230600 *May 16, 2003Dec 18, 2003Masatoshi MasudaCylinder and valve structures for liquid-dispensing containers
US20040026461 *Dec 11, 2001Feb 12, 2004Jean-Louis BougamontElectronic micro-pump
US20090302067 *Oct 16, 2006Dec 10, 2009Bart Relinda Jan HendrickxDevice for metered dispensing of pasty mass, and a container therefor
US20110049191 *Jan 15, 2010Mar 3, 2011Colgate-Palmolive CompanyDispensing container
US20110303702 *Jun 11, 2010Dec 15, 2011Derxin (Shanghai) Cosmetics Co., Ltd.Liquid spray head assembly
US20120160873 *Dec 27, 2010Jun 28, 2012Plastic Industry Development CenterDispenser for adjusting rationing liquid
US20160263603 *Sep 19, 2014Sep 15, 2016Aptar Italia S.P.A.Dispenser with a hermetic seal
US20170197226 *Jan 8, 2016Jul 13, 2017Westrock Dispensing Systems, Inc.Pump systems, pump engines, and methods of making the same
USRE37047Dec 5, 1995Feb 6, 2001Daniel PyCartridge for applying medicament to an eye from a dispenser
CN1102527C *Apr 30, 1999Mar 5, 2003卡尔玛-蒙图拉斯公司Fluid pump dispenser
CN106241029A *Aug 4, 2016Dec 21, 2016宁波奥邦喷雾器有限公司外置开关泵
DE3151892A1 *Dec 30, 1981Aug 12, 1982Sar SpaHandpumpe zur druckfoerderung von fluessigkeiten und/oder dickfluessigen substanzen aus einem behaelter
DE202014009706U1Dec 10, 2014Dec 14, 2015Gerhard BruggerDosierspender
EP0086377A2 *Jan 28, 1983Aug 24, 1983METASCO GmbHHand pump sprayer for corrosive fluids
EP0086377A3 *Jan 28, 1983Sep 12, 1984METASCO GmbHHand pump sprayer for corrosive fluids
EP0361260A2 *Sep 18, 1989Apr 4, 1990Ophardt Product Hermann OphardtPiston pump for dosing flowable substances
EP0361260A3 *Sep 18, 1989Aug 1, 1990Ophardt Product Hermann OphardtPiston pump for dosing flowable substances
EP0536617A1 *Sep 29, 1992Apr 14, 1993EXO S.r.l.Manually operated pump for dispensing liquid or creamy substances at a predetermined constant pressure
EP0547439A1 *Dec 3, 1992Jun 23, 1993SAR S.p.A.Dispenser for dispensing liquid substances or substances in the form of cream or paste
WO1998053917A1 *May 28, 1998Dec 3, 1998Rexam SofabArticulated piston pump
WO2000023199A1 *Oct 15, 1999Apr 27, 2000Rexam SofabLow capacity pump with enhanced compatibility
WO2001003850A1 *Jul 7, 2000Jan 18, 2001Rexam SofabLiquid product dispenser with two-part body
WO2011036218A1 *Sep 23, 2010Mar 31, 2011Modapack S.R.L.Manually operated pump comprising an assembly for pressurization and dispensing of fluid
U.S. Classification222/321.9, 417/511, 92/170.1, 417/566
International ClassificationB05B11/00
Cooperative ClassificationB05B11/3074, B05B11/3023, B05B11/3069
European ClassificationB05B11/30C9, B05B11/30H8B, B05B11/30H7B2