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.

Patents

  1. Advanced Patent Search
Publication numberUS2855127 A
Publication typeGrant
Publication dateOct 7, 1958
Filing dateJan 23, 1956
Priority dateJan 23, 1956
Publication numberUS 2855127 A, US 2855127A, US-A-2855127, US2855127 A, US2855127A
InventorsSafianoff Albert, Louis L Lerner
Original AssigneeGillette Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dispensing pump and check valve therefor
US 2855127 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Oct. 7, 1958 l.. L .LERNER ETAL 2,855,127

DISPENSING PUMP AND CHECK VALVE THEREFOR Filed Jan. 25. 195e y United States Patent() DISPENSING PUMP AND CHECK VALVE THEREFOR Louis L. Lerner and Albert Salanolf, Chicago, Ill., assignors to The Gillette Company, Boston, Mass., a corporation of Delaware Application January 23, 1956, Serial No. 560,701

3 Claims. (Cl. 222-207) This invention relates 'to a pump for dispensing liquids of nely divided, readily llowable, `solid materials such as powders or the like and pertains more specically to a pump for dispensing liquids adapted to be mounted on a container such as a bottle, can or the like.

One object of the invention is to provide a dispensing device `of simplied and inexpensive construction which is readily adapted to handle liquids of a wide range of viscosities as well as readily flowable particulate materials.

Another object is to provide such a pump having a unitary, one-piece, molded plastic body member.

Still another object is to provide 'an improved checkvalve construction adapted for use in pumps of the type described.

Other and further objects will be apparent from the drawings and from the description which follows:

In the drawings:

Fig. l is a View in elevation of one embodiment of the invention;

Fig. 2 is a top plan view of the embodiment shown in Fig. 1;

Fig. 3 is a view in vertical section along the -line 3-3 of Fig. 2;

iFig. 4 is a bottom plan Iview of the embodiment shown in Fig. l;

Fig. 5 is a view in vertical section on an enlarged scale of the outlet valve portion of the device; and

Fig. 6 is a View in vertical section on an enlarged scale of the inlet valve portion of the device.

As `shown in the drawings, the pump, which is designated generally by the numeral 10, comprises a unitary one-piece body member 12 molded of a flexible, resilient plastic material such as natural or synthetic rubber, polyethylene, plasticized vinyl resin, or the like, polyethylene being preferred. Body member 12 is provided with a depending annular skirt 14 having a screw thread 16 molded on its inner face to facilitate mounting of the pump on the neck of a bottle 18, but it will be understood that any other suitable mounting means maybe provided.

Body member 12 is provided with 'a central cavity 20 which is `open to the atmosphere at the top. Inlet passage 22 and outlet passage 24 are molded integrally with body member 12 and communicate with central cavi-ty 20. An auxiliary inlet tube 27 of Sullicient length to extend close to the bottom of container 18 may be formed separately from body member 12 and frictionally secured within inlet passage 22. The tube may be fabricated at any suitable material such as glass, metal, plastic, or the like. Molded within each passage 22, 24 is a generally conical valve seat 26, 2S, as best seen in Figs. 5 and 6, each 1valve seat being provided with a plurality of circular circumferential inwardly projecting ribs 30, 30 formed of the same flexible, resilient plastic material as body member 12. Each rib 30 is of generally triangular cross-sectional configuration with one face extending parallel to the axis of the valve seat and passage, the other face extending perpendicular thereto with the two faces meeting in a sharp edge. Although the precise number of such ribs is not critical, best results have been obtained when 'at least -three such ribs or steps are present. Also molded in the wall of each passageway are a plurality of projecting nibs 32, 32 which serve as yieldable valve retaining members or stops for retaining generally spherical rigid valve members 33, 34 in proximity to the -Valve seat. Valve members 33, 34 may conveniently take the form of ball bearings made of ysteel or other metal. A-s shown best in Fig. 4, the bot-tom of body member 12 is provided with a plurality of spaced projecting flat-faced lugs 35 in position to engage the upper lmargin of container 18 when the dispenser is mounted thereon, the spaces between adjacent lugs serving as vents for admitting air to the container as the contents are pumped out.

A separate molded dome 36 lof natural or synthetic rubber or other ysimilar resilient elastic material is provided to close the open top of cavity 20 and form a chamber therewith, the lower marginal portion of dome 36 being frictionally seated in an annular groove 38 molded in the wall of body member 12 encircling cavity 20, the width of groove 38 being slightly less than the thickness of dome 36. An upstanding flange 40 provided with an inwardly directed lip 42 is also molded integrally with body member 12 and serves to assist in retaining dome 36 in position.

In assembling the device valve members 33, 34 are forced into passages 22, 24 past nibs 32, 32 to the desired position in close proximity to their respective Valve seats. Dome 36 is mounted in groove 38 and auxiliary inlet tube 26 is forced into the lower end of inlet passageway 22 where it is frictionally retained. The device is then ready for operation and may be mounted on any suitable container. It will be noted tha-t because of the stepped conical configuration of valve seats 26, 28 valve members 33, 34 need not be perfectly spherical. The yielding resilient nature of the ribs 30, 30 enables each valve .seat to laccommodate slightly out-of-round valve members. This makes it possible to use inexpensive ball bearings as the valve members instead of the much more expensive precision-ground ball bearings which are substantially perfect spheres.

In operating the device dome 36 is compressed with a finger so as to decrease the -volume of the `chamber it en- -closes, forcing any material within the chamber through outlet 24 while the check valve in the inlet passage 22 is closed. Upon release of the finger, pressure dome 36 regains its original rounded coniguration, causing the check valve in outlet passage 24 to close and drawing liquid through inlet passageway 22 past its respective check valve into the chamber formed by cavity 20. It will be noted that the yieldable valve retaining nibs 32, 32 in outlet passageway 24 hold Valve member 34 in close proximity -to Valve seat Z8, so that upon release of the pressure on dome 36 valve member 34 will be drawn into closed position by the initial inward ow of air through outlet 24. The nibs 32 in inlet passageway 22, on the other hand, are spaced farther away from their respective valve seat 26 to permit greater displacement of the valve member to ensure rapid lling of the valve chamber. inasmuch as the dispenser is normally employed in Va more or less upright position, inlet valve 34 will be urged into seating position -by gravity as soon as the upward ow of material through inlet passage 22 has stopped.

Although specic embodiments of the invention have been described herein, it is n-ot intended to limit the invention solely thereto, but to include all of the obvious variations and modifications -within the spirit and scope of the appended claims.

We claim:

l. A liquid-dispensing pump comprising an integral, one-piece, molded, ilexible, resilient, plastic body member of generally tubular conguration, one end of said plastic body member being arranged for mounting on a container of liquid to be dispensed7 said body member including a transverse wall forming a cavity at the other end of `said body member, a groove encircling said cavity at said second end, a resilient, flexible, elastic dome having its margin seated in said groove to close said cavity, an upstanding flange integral with said body member encircling said groove having an inwardly extending lip for retaining said dome in position, an outlet passage extending through a side of said body member from said cavity and an inlet passage extending through said transverse wall to said cavity, each said passage having a stepped conical check-valve seat integral with said body member, a generally spherical valve member in each passage movable to and from seating position, radially inwardly projecting retaining members integral with each passage spaced from each valve seat for retaining each said valve member adjacent its respective seat, each retaining member being yieldable to permit each said valve member to be forced through said passage past said retaining members into position adjacent its valve seat but preventing passage of said valve member under normal operating conditions, and an inlet tube attached to said inlet passage extending to a position adjacent the bottom of said container 'when said pump is mounted thereon.

2. A liquiddispensing pump comprising an integral, one-piece, molded plastic body member having a hollow interior open at opposite ends, one open end of said body member being arranged for mounting on a container of liquid to be dispensed, said body member including a transverse wall forming a cavity at the other end of said body member, a groove surrounding said cavity at said second end, a resilient, flexible, elastic dome having its margin seated in said groove to close said cavity, an upstanding ange integral with said body member surrounding said groove having an inwardly extending lip for retaining said dome in position, an outlet passage extending from said cavity through a side of said body member and an inlet passage extending to said cavity through said transverse wall, each said passage having a check-valve seat integral with said body member, a valve member in each passage movable to and from seating position, and radially inwardly projecting retaining members integral with each passage spaced from each valve seat for retaining each said valve member adjacent its respective seat, each retaining member permitting each valve member to be forced through said passage past said retaining member into position adjacent its valve seat but preventing passage of said valve member under normal operating conditions.

3. A pump as dened in claim 2 including an inlet tube extending from said inlet passage to `a position adjacent the bottom of the container when said pump is mounted thereon.

References Cited in the tile of this patent UNITED STATES PATENTS 2,005,299 Penrod .lune 18, 1935 2,044,629 Parker June 16, 1936 2,250,813 Rea July 29, 1941 2,275,051 Maloney Mar. 3, 1942 2,275,972 Maloney Mar. lO, 1942 2,322,139 Kaelin June 15, 1942 2,690,278 Bacheller Sept. 28, 1954 FOREIGN PATENTS 340,428 Germany Sept. l2, 1921

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2005299 *Apr 29, 1930Jun 18, 1935Penrod JohnValve assembly for well pumps
US2044629 *Jun 4, 1934Jun 16, 1936Parker Arthur LCheck valve for fluid pressure pipes
US2250813 *Aug 17, 1937Jul 29, 1941Rea Philip MMeans for hermetically sealing fluid pressure
US2275051 *Sep 29, 1938Mar 3, 1942Brass Goods Mfg CoDispensing device
US2275972 *May 10, 1939Mar 10, 1942Brass Goods Mfg CoDispensing device
US2322139 *Feb 18, 1942Jun 15, 1943Frederick C KingstonSafety valve
US2690278 *May 24, 1952Sep 28, 1954Bacheller D FlaviusDispensing pump for small containers
DE340428C *Feb 1, 1920Sep 12, 1921Charles Bouche Dipl IngKugelventil
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2979236 *Feb 10, 1958Apr 11, 1961Fahr MorrisDispenser caps for fluid containers
US3029001 *Dec 28, 1959Apr 10, 1962Blish Matthew BFlexible dispensing closure for rigid containers
US3105618 *Sep 21, 1960Oct 1, 1963Beckman Instruments IncMicro pipette fluid distributor
US3162333 *Jul 30, 1959Dec 22, 1964Guild MoldersMultiple-part plastic pump for liquids
US3172561 *Sep 6, 1962Mar 9, 1965Benjamin F EdwardsChild's feeding apparatus
US3185174 *Apr 18, 1963May 25, 1965Illinois Tool WorksDirect response valve
US3207374 *Nov 14, 1963Sep 21, 1965Burroughs Wellcome CoDispenser
US3220611 *Aug 14, 1964Nov 30, 1965Zander Dennis LWall mounted bracket and dispenser for collapsible tube
US3268216 *May 18, 1965Aug 23, 1966Tillotson Mfg CoCharge forming device for internal combustion engines
US3387625 *Jun 24, 1965Jun 11, 1968W L Molding CompanyCheck valve
US3411648 *Oct 6, 1966Nov 19, 1968William C. TichyAnticolic nursing device
US3771556 *Dec 27, 1971Nov 13, 1973Vernay LaboratoriesOne way check valve
US3779429 *Dec 17, 1971Dec 18, 1973Federal Tool & Plastics A DiviPlastic dispensing nozzle with a ball valve
US4457454 *Oct 26, 1981Jul 3, 1984Philip MeshbergTwo-compartment dispenser
US5095940 *Dec 18, 1990Mar 17, 1992Behr-Thomson Dehnstoffregler Gmbh & Co.Thermostatic valve
US5890624 *Jun 7, 1995Apr 6, 1999Sprayex L.L.C.Rechargeable dispensers
US5944223 *Nov 4, 1997Aug 31, 1999Sprayex, Inc.Rechargeable dispensers
US7997047 *Aug 18, 2009Aug 16, 2011Widgeteer, Inc.Air evacuation assembly for sealable plastic bags
US7997454Dec 6, 2007Aug 16, 2011Sealed Air Corporation (Us)Metering dispensing system with improved valving to prevent accidental dispensing of liquid therefrom
US8061566Mar 20, 2008Nov 22, 2011Sealed Air Corporation (Us)Metering dispensing system with improved valving to prevent accidental dispensing of liquid therefrom
US8083103Mar 12, 2008Dec 27, 2011Sealed Air Corporation (Us)Dispenser with dual pump system
US8123073Nov 28, 2007Feb 28, 2012Sealed Air Corporation (Us)Method of dispensing a fluid with metered delivery
US8127789 *Oct 30, 2003Mar 6, 2012ARK Therapeutic Services, Inc.Fluid retaining apparatus with ball valve
US8128303Feb 6, 2008Mar 6, 2012Sealed Air Corporation (Us)Metering dispensing flexible pouch with spray nozzle
US8132696Feb 18, 2011Mar 13, 2012Sealed Air Corporation (Us)Metering dispensing system with one-piece pump assembly
US8136700Feb 22, 2008Mar 20, 2012Sealed Air Corporation (Us)Dual chambered fluid dispenser with mixing chamber
US8152400Feb 21, 2008Apr 10, 2012Sealed Air Corporation (Us)Surface cleaner with removable wand
US8167510Feb 22, 2008May 1, 2012Sealed Air Corporation (Us)Surface scrubber with rotating pad
US8292120Mar 24, 2008Oct 23, 2012Sealed Air Corporation (Us)Hanging liquid dispenser
US8387833Feb 24, 2010Mar 5, 2013Sealed Air Corporation (Us)Fluid dispensing device with metered delivery
US8402999Mar 22, 2006Mar 26, 2013Vitop Moulding S.R.L.Liquid dispensing tap, in particular for liquids with higher density
US20090183371 *Jan 23, 2009Jul 23, 2009Mileti Robert JRazor With Integrated Dispensing of Shaving Treatments
WO1983001431A1 *Oct 25, 1982Apr 28, 1983Philip MeshbergTwo-compartment dispenser
WO1986004984A1 *Feb 26, 1986Aug 28, 1986Emson ResApparatus for dispensing products from a self-sealing dispenser
WO2008073875A2 *Dec 10, 2007Jun 19, 2008Poly D LlcDispensing stand-up pouch
Classifications
U.S. Classification222/207, 222/212, 222/211, 137/533.11, 251/359, 222/215
International ClassificationF04B53/10, F04B43/00, B05B11/00, B65D47/34
Cooperative ClassificationF04B43/0063, F04B53/101, B05B11/3032
European ClassificationB05B11/30E6, F04B53/10B8, F04B43/00D8B