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Publication numberUS3225967 A
Publication typeGrant
Publication dateDec 28, 1965
Filing dateFeb 18, 1963
Priority dateFeb 19, 1962
Publication numberUS 3225967 A, US 3225967A, US-A-3225967, US3225967 A, US3225967A
InventorsJosef Heimgartner
Original AssigneeTrichema Ag
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Device for dispensing liquids, pastes and other flowable material
US 3225967 A
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Description  (OCR text may contain errors)

HEIMGARTNER DEVICE FOR DISPENSING LIQUIDS.

PASTES AND OTHER FLOWABLE MATERIAL Dec. 28, 1965 Filed Feb. 18, 1965 FIG. 1

INVENTOR Jess Helrnqarrner M ATTOW 3,225,967 DEVICE FOR DISPENSING LIQUIDS, PASTES AND OTHER FLGVVABLE MATERIAL Josef Heimgartner, Oberrieden, Zurich, Switzerland, assignor to Trichema AG., Zurich, Switzerland Filed Feb. 18, 1963, Ser. No. 259,000 Claims priority, application Switzerland, Feb. 19, 1962, 1,975/62 1 Claim. (Cl. 222183) This invention relates to dispensing devices for liquids, pastes and other flowable materials, comprising a container with a built in outlet valve in the container cover for the material to be dispensed under pressure.

Previous devices of this type include a metal canister containing the material to be dispensed under pressure, in which the dispensing pressure is produced in most cases by a suitable gas, which is either added to the material, or stored above the latter in the form of a pressure-gas cushion, or else acts upon the material by means of a sliding piston built in the canister. For the former process, only such propellent gases are suitable which do not react with the material to be dispensed, which excludes the dispensing of certain liquids by use of this device; moreover under such circumstances, the propellent gas would be ejected together with the liquid material, which is usually undesirable. With pastes and similar semifluid material an admixture of pressure-gas is practically impossible, as no even distribution of the propellent gas can be expected in the semi-fluid material, instead, a pressuregas cushion must be produced, remaining in contact with the material, which, however is likely to cause an undesirable escape of larger amounts of gas. On the other hand, pressure gas-actuated pistons have various disadvantages; above all, they make the construction of the device considerably complex, should one try to obtain a really tight guidance of the piston. Since the dispensing valve extends into the receptacle no complete emptying of the canister will be obtained by use of a piston. Dead spaces always form in the receptacle adjacent to the valve where the piston is prevented from entering. Similarly the same applies to dispensing devices with a yielding container, e.g. bellow-type, or including tubes and the like, in which the dispensing pressure is produced manually by squeezing the container holding the material.

It is an object of the invention to provide an improved device for dispensing liquids, pastes and other flowable materials, which avoids the mentioned drawbacks. According to the invention this device comprises a container, a cover member for the container, the edge of the cover member being engaged on the top edge of the container, a dispensing valve in the cover member, and a bag-shaped diaphragm of rubber-elastic material within the container, said diaphragm having a free edge clamped between said joined edges of the cover- -mem=ber and the container edge, said bag-shaped diaphragm forming a chamber communicating with said dispensing valve and adapted to receive the material to be dispensed.

The diaphragm bag of rubber elastic material perfectly separates the material to be dispensed from the propelling agent present in the container, moreover its elasticity permits the bag to be filled as it exp-ands, so that the bag by emptying adapts itself practically without wrinkling to the volume of the material available; in addition the bag can be fitted contiguously without difliculty to the cover and valve preventing dead spaces from occurring and enabling likewise that the material contained can actually be dispensed completely.

An embodiment of the dispensing device in accordance United States Patent with the present invention, is illustrated in the accompanydrawings, showing:

FIG. 1 a longitudinal section of the device with the diaphragm-bag filled, and

FIG. 2 a longitudinal section of the device analogous to FIGURE 1, with approximately of the diaphragm bag emptied.

In the drawings, numeral 1 refers to a cylindrical metal container, e.g. made of aluminum, with a conical, outwar-dly clamped cover flange la and with an inwardly curved bottom 1b. The free edge of the diaphragm bag 2 made of rubber-elastic material, extending into the container 1 is turned over the crimped edge of the cover flange la and tightly clamped there by means of the outwardly crimped edge of a cover 3, having the shape of a truncated cone. The inwardly projecting cover 3 has a central recess 3a in which a dispensing valve 4 with a rigid inlet nozzle 4a and an axially movable outlet spout 4b is inserted. The ouelet spout 4b is actuated in the usual manner by means of detachable mouth piece not shown in the drawings.

When in filled condition, the diaphragm bag 2, which may be composed of a rubber-elastic synthetic material of natural or synthetic rubber, such as neoprene, is slightly expanded and most of its length lays against the inner wall of the metal container 1, whereby a tapered-neck member 2a of the diaphragm bag oil-set from the cover flange 1a of the container leads to the point of clamping, whereas the bottom of the diaphragm bag 2 hangs downwardly, so as to form a slightly convex curvature. A free space 10 containing a propellent agent is left between the bottom of the diaphragm bag 2 and the bottom 1b of the container. Compressed gases, such as nitrogen, nitrous oxide, carbon dioxide, argon, etc. or liquefied gases such as propane, butane, vinylchloride and fiuorinated, aliphatic chlorinated hydrocarbon may be used as propellent agents. Thus, for instance, difluorodichloromethane maintained liquid by cooling can be used as a propelling agent and filled into the aluminum container provided with an internal protection enamel finish, the amount of propelling agent, being equivalent to 8-10 percent of the weight of the material to be dispensed. The filling of the device can be executed by successively filling, with the cover 3 removed, the liquid propelling agent, by inserting the empty diaphragm bag and subsequently pressing on the cover 3 with the valve 4, whereupon the liquid or flowable material is introduced into the diaphragm bag 2 through valve 4. In case a gaseous propelling agent is used this can be introduced into the bottom of the container, through an opening, adapted to be sealed oil after the diaphragm bag has been inserted, and after the cover has been put in place. As the propelling agent is prevented from coming into contact with the material contained in the diaphragm bag, such as tooth paste, liquid or paste-type shoe polish etc., one is entirely free to choose a propelling agent which is most suitable for the set purpose.

When, using the dispensing device, the mouthpiece, and consequently the outlet spout 4b is depressed, the valve outlet opens the propelling agent, exerts pressure on the bottom of the diaphragm bag, and through the valve 4 forces out the material to be dispensed. As the emptying of the diaphragm bag 2Whic11 in the filled condition, is expanded as previously mentioned, beyond its normal size-goes on, the diaphragm bag shrinks accordingly (FIG. 2) whereby the progressively releasing propelling agent gains access on all sides to the diaphragm bag 2. The neck member 2a of the bag comes to bear against the conical peripheral wall of the cover 3, whereas the strongly reduced main portion of the bag commences enclosing the valve 4 in the manner of a bell. Owing to the fact, that the propelling agent acts also upon the upper portion of this bell-shaped remainder of the bag,

this upper portion comes to bear against the underside of the cover 3 as the emptying of the diaphragm bag continues; when the bag is completely emptied it encloses the valve 4 in such a way under the effect of pressure exerted by the propelling agent, that practically no dead space holding non-disposable entrapped material is left in the diaphragm bag.

Actually, a dispensing device having a diaphragm bag of the type described, for the material to be dispensed, adapts itself for use even without a gaseous propelling agent. Thus, for instance, a spring-loaded piston, enclosing an air-cushion between itself and the bottom of the bag, could be provided for compressing the diaphragm bag. Instead of in a rigid container, the diaphragm bag could also be inserted in a bellows-tube, in which, by covering a suction vent, an air cushion encompassing the bag, could be compressed for instance by hand, which in turn squeezes together the diaphragm bag, in a manner similar to the action of an expanding gaseous propelling agent.

Experience has shown, that the device described above, permits forcing out of the bag any liquid or pasty material perfectly, and practically without leaving any remainders. Owing to the fact that the diaphragm bag keeps the propelling agent not only separated from the material to be dispensed, but also from the valve outlet and undesirable escaping of the propelling gas-which may easily occur e.g. by incorrectly handling (valve turned downwardly) the known devices, in which the propelling agent is arranged within the same space as the material to be dispensed-will be avoided.

I claim:

A device for dispensing liquids, pastes and other flowable materials under pressure, comprising a container, a cone-shaped cover member for the container, the edge of the cover member being engaged on the top edge of the container, a dispensing valve in the cover member, and a bag shaped diaphragm of rubber-elastic material within the container, said diaphragm having a free edge clamped to the cover member, said bag-shaped diaphragm forming a chamber communicating with said dispensing valve and adapted to receive the material to be dispensed, said container being a cylindrical metallic receptacle with an outwardly crimped cover flange, over which the free edge of the diaphragm bag is turned and the cover member is provided with a corresponding flange which follows the curvature matingly of the outwardly curved cover flange, the free edge of the elastic bag also following the curvature of both flanges and being confined therebetween so that the portion of the bag adjacent the lower edge of the crimp is confined, in the bag collapsed position, against the cone shaped element to provide a correspondingly cone shaped portion of the bag rigidly clamped by means of the outwardly crimped edge of the cover member.

References Cited by the Examiner UNITED STATES PATENTS 2,557,162 6/1951 Wetzel et al. ZZZ-95 X 2,671,578 3/1954 McBean 22295 2,804,995 9/1957 Fee 22295 2,937,791 5/1960 Micallef 222-95 3,055,553 9/1962 Mapes et a1 222-95 LOUIS I. DEMBO, Primary Examiner.

RAPHAEL M. LUPO, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2557162 *May 6, 1949Jun 19, 1951Fyr Fyter CoFire extinguisher
US2671578 *Jun 20, 1950Mar 9, 1954Mcbean Douglas MPressure can having a flexible material holding bag therein
US2804995 *Aug 2, 1954Sep 3, 1957William O FeeResilient, manually operable dispensers for viscous material
US2937791 *Dec 31, 1954May 24, 1960Micallef Lewis APressure discharge can
US3055553 *Oct 29, 1959Sep 25, 1962Specialties Dev CorpFuel cartridge assembly for airborne power units
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3378169 *Apr 6, 1967Apr 16, 1968Allied ChemAerosol container
US3393842 *May 10, 1966Jul 23, 1968Sterigard CompanyPressurized container with elastic inner container and method of assembling same
US3423818 *Mar 25, 1966Jan 28, 1969Continental Can CoMethod of producing collapsible plastic liner and assembling liner to aerosol container
US3477195 *Mar 30, 1967Nov 11, 1969Valve Corp Of AmericaMethod of pressurizing a dispensing container
US3806005 *Aug 7, 1972Apr 23, 1974Mason JAerosol container with plug-in cap and valve structure
US3876115 *Apr 27, 1972Apr 8, 1975Plant Ind IncDouble expansible bladder container
US3876119 *Feb 26, 1973Apr 8, 1975Denham Lee RoyInverting liner pressurized tank
US4140117 *May 19, 1977Feb 20, 1979Alza CorporationCartridge for liquid infusion apparatus
US4222499 *May 7, 1979Sep 16, 1980Kain's Research & Development Company, Inc.Pressurized fluid dispensing apparatus having expansible bladder held in place with compressive forces
US4469250 *Feb 25, 1982Sep 4, 1984Nick Sekich, Jr.Squeezable dispensing apparatus and method of operation
US4469252 *Mar 24, 1982Sep 4, 1984Aerosol Service AgTwo-compartment package
US4673107 *Aug 7, 1984Jun 16, 1987Sterling Drug, Inc.Two-compartment dosing package
US4760937 *Jun 16, 1986Aug 2, 1988Evezich Paul DSqueezable device for ejecting retained materials
US4779736 *Sep 27, 1985Oct 25, 1988Gordon GeaslandTubular plastic shipping, storage and dispensing container
US4896794 *Jan 27, 1989Jan 30, 1990Enviro-Spray Systems, Inc.Method for prepressurizing dispensing container and for filling pressurized container with flowable product
US5044524 *Jan 25, 1990Sep 3, 1991Vaclav PistekPressurized dispensing container
US5059187 *May 4, 1990Oct 22, 1991Dey Laboratories, Inc.Method for the cleansing of wounds using an aerosol container having liquid wound cleansing solution
US5224630 *Jan 15, 1991Jul 6, 1993Hoechst (Uk) LimitedPressurized container having double walls and safety venting feature
US5305920 *Nov 20, 1991Apr 26, 1994The Procter & Gamble CompanyBag-in-bottle package with reusable resilient squeeze bottle and disposable inner receptacle which inverts upon emptying without attachment near its midpoint to squeeze bottle
US5305921 *Sep 13, 1993Apr 26, 1994The Procter & Gamble CompanyPackage with replaceable inner receptacle having large integrally molded fitment
US5377875 *Dec 21, 1993Jan 3, 1995The Procter & Gamble CompanyPackage with replaceable inner receptacle having large integrally molded fitment
US5865350 *Jan 24, 1997Feb 2, 1999Pure Vision International L.L.P.Spray bottle with built-in pump
US6196275 *Dec 21, 1998Mar 6, 2001Toyo Aerosol Industry Co., Ltd.Double chamber aerosol container and manufacturing method therefor
US6588628 *Nov 30, 2001Jul 8, 2003Robert Henry AbplanalpAerosol valve assembly
US6997353 *Mar 26, 2003Feb 14, 2006AirlesssystemsFluid product dispenser
US8074847Feb 5, 2010Dec 13, 2011The Procter & Gamble CompanyPressurized package
US20070108224 *Oct 15, 2004May 17, 2007Campbell Iain JMethod for dispensing a food product
US20110139810 *Dec 15, 2009Jun 16, 2011Primos, Inc.Scent fluid dispensing system and methods
EP0177047A2 *Oct 4, 1985Apr 9, 1986George B. DiamondExpandable pressurized barrier container
WO2007119225A1 *Apr 17, 2007Oct 25, 2007Procter & GambleMethod of filling a container
Classifications
U.S. Classification222/183, 222/105, 222/95, 222/206
International ClassificationB65D83/14
Cooperative ClassificationB65D83/62
European ClassificationB65D83/62