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EP0000093B1 - A pump dispenser for a vacuum bottle - Google Patents

A pump dispenser for a vacuum bottle Download PDF

Info

Publication number
EP0000093B1
EP0000093B1 EP78300022A EP78300022A EP0000093B1 EP 0000093 B1 EP0000093 B1 EP 0000093B1 EP 78300022 A EP78300022 A EP 78300022A EP 78300022 A EP78300022 A EP 78300022A EP 0000093 B1 EP0000093 B1 EP 0000093B1
Authority
EP
European Patent Office
Prior art keywords
housing
disc member
air
container
interior space
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.)
Expired
Application number
EP78300022A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0000093A1 (en
Inventor
Albert A. Frazier
Howard W. Phillips
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.)
Aladdin Industries LLC
Original Assignee
Aladdin Industries LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27122625&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0000093(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US05/837,519 external-priority patent/US4113147A/en
Application filed by Aladdin Industries LLC filed Critical Aladdin Industries LLC
Publication of EP0000093A1 publication Critical patent/EP0000093A1/en
Application granted granted Critical
Publication of EP0000093B1 publication Critical patent/EP0000093B1/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J41/00—Thermally-insulated vessels, e.g. flasks, jugs, jars
    • A47J41/0005—Thermally-insulated vessels, e.g. flasks, jugs, jars comprising a single opening for filling and dispensing provided with a stopper
    • A47J41/0027—Thermally-insulated vessels, e.g. flasks, jugs, jars comprising a single opening for filling and dispensing provided with a stopper the stopper incorporating a dispensing device, i.e. the fluid being dispensed through the stopper
    • A47J41/0033—Thermally-insulated vessels, e.g. flasks, jugs, jars comprising a single opening for filling and dispensing provided with a stopper the stopper incorporating a dispensing device, i.e. the fluid being dispensed through the stopper comprising a pumping system
    • 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
    • B05B11/06—Gas or vapour producing the flow, e.g. from a compressible bulb or air pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/04—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/04—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers
    • B67D1/0412—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers the whole dispensing unit being fixed to the container
    • B67D1/0425—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers the whole dispensing unit being fixed to the container comprising an air pump system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/02—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having bellows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
    • G01F11/025—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with manually operated pistons
    • G01F11/028—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with manually operated pistons the dosing device being provided with a dip tube and fitted to a container, e.g. to a bottleneck

Definitions

  • This invention relates to the field of vacuum insulated containers of the type commonly referred to as vacuum flasks. More specifically, it relates to an improvement in vacuum flask construction whereby the need to remove a cap to dispense the liquid therefrom is avoided. Since the purpose of a vacuum flask is to maintain its contents at a desired serving temperature, either hot in the case of coffee and the like or cold in the case of soft drinks, it is desirable to maintain the integrity of the vacuum unit to prevent heat transfer.
  • Prior vacuum flask designs whether wide mouth of narrow mouth in construction, usually require that a cap be removed and the bottle be tipped to some degree to pour the contents from the bottle. During this dispensing operation the insulating properties of the bottle are impaired. Another disadvantage of prior designs is that during pouring it is easy to spill the contents and if the liquid is hot, burns can result.
  • the present invention provides a pump dispenser for insulated containers which, in use with an insulated container, avoids the necessity for pouring liquids from the container and which maintains the integrity of the pump dispenser and container in use.
  • the pumping means is formed by the bellows, which define the air chamber, connected to a ring at its lower end and a metal element at its open other end.
  • the metal element has a mouthpiece capped thereon.
  • the pumping means is actuated by means of a swinging bar, an intermediate bar and pusher.
  • a framework for the dispenser lid is essential for operation of a check valve. As the pusher is depressed, the check valve closes and remains closed during the downward stroke of the pusher and also during a major part of the upward stroke of the pusher.
  • the check valve only opens to allow air to enter the bellows when the pusher has returned upwardly to a position in which the check valve is opened by once again directly contacting a lower member of the framework. Efficiency of operation is lost therefore because air is not entering the bellows during a major part of the return stroke of the pusher. Furthermore, the use of a check valve may eventually lead to mechanical failure of the dispenser.
  • the capacity of air displaced by the pumping means on each downward stroke of the pusher is limited by the extent to which the bellows are evacuated. Inevitably, the bellows, with their concertina-like side walls, cannot be completely evacuated because there must be a residual volume of air in the bellows even in the fully depressed position of the pusher. Thus, the pumping efficiency of the dispenser is limited by the structure of the bellows.
  • DE-C-144,412 shows a dispenser mounted atop a container.
  • the air space is defined by a deformable bulb actuated by the user's hand and including a button member with an aperture therein for entry of air. This allows air to fill the bulb.
  • the bulb which does not have a housing as such, sits atop passage defining means for the entry of air to the container which includes a one-way valve.
  • the pumping efficiency of the dispenser is limited by the extent to which the bulb can be evacuated and clearly full evacuation is not possible, particularly when it is noted that the user must simultaneously close the aperture in the button and compress the bulb.
  • the present invention seeks to provide a pump dispenser which has mechanical reliability, simplicity of construction by avoiding mechanical actuation of the pumping means and greater volumetric pumping efficiency.
  • a pump dispenser for an insulated container having a pouring opening through which liquids pass into and out of the interior of the container, said pump dispenser being adapted to removably engage the container and seal the pouring opening to prevent heat loss and spilling
  • said dispenser comprising a pump housing (36) which is cylindrical and which defines an interior space (34) having at least one opening (42) in a bottom (41) of said housing (36) enabling, in use, said interior space (34) to communicate with the interior of said container (10), pumping means (18) including a rigid disc member (26) for pumping air from said interior space (34) into said container (10), a closable opening (32) in said pumping means (18) to permit air to enter the interior space (34) of the housing (36), and conduit means (24, 40, 22, 20) for permitting fluid to pass out of the container (10) in response to air pressure created therein as a result of the downward displacement of said pumping means (18) characterised in that said housing (36) defines an interior space (34) serving as an air chamber from which air is
  • the vacuum bottle for the purpose of the present application, includes an outer jacket 10, a vacuum filler 12, a bottom cap 14 and a filler spacer 16 which positions the filler 12 in the jacket and protects the glass nipple through which air is withdrawn from the interior of the filler.
  • the filler is shown as being a narrow neck bottle, that is, one which tapers at its top to form a convenient pouring neck.
  • the pump dispenser according to the invention is also capable of being used with wide mouth bottles. A wide mouth bottle does not have the taper and, accordingly, the pump dispenser would have a dimensional change to correspond to the opening of the wide mouth filler.
  • the pump 18 includes a dispensing spout 20, a spout channel 22 and a fluid tube 24 which extends downwardly into the interior of the vacuum flask. In response to air being forced into the interior of the vacuum bottle from the pump, fluid passes upwardly through the tube 24 into the channel 22 and out of spout 20.
  • Air is forced into the interior of the vacuum flask by the manually operable pump portion of the unit which includes a disk 26, a flexible sealing member or rolling diaphragm 28 and a return spring 30.
  • the disk 26 has an air port 32 located at its center for permitting the passage of air to an interior space 34 which is enclosed in part by the rolling diaphragm 28.
  • the disk is retained in the position shown in Figure 2 by the inwardly directed flange 35 of a pump housing 36.
  • the disk 26 and diaphragm 28 can, however, move vertically downward against the bias of a spring 30 to effect the pumping action to be described.
  • the spring 30 urges the disk and diaphragm back to their initial positions when manual pressure on the disk is removed.
  • the diaphragm 28 which as an outer peripheral portion 29 secured between an upper portion 11 of the jacket 10 and a downwardly depending portion 37 of the housing 36, effectively seals the upper portion of interior space 34 to make it airtight except for opening 32 in the disk.
  • An inner portion 28a of the diaphragm 28 is secured to the disk by any suitable bonding technique.
  • An intermediate portion 28b of the diaphragm connects the inner portion 28a with the peripheral portion 28b for movement of the former relative to the latter.
  • the lower portion of the space 34 is enclosed by a wall 39, a conical section 38, bottom 41, and a center post 40.
  • the upper portion of the center post 40 provides a means for mounting the helical spring 30.
  • Bottom portion 41 is provided with a number of openings 42 to permit the passage of air from the interior space 34 into the filler 12 in order to increase the air pressure on the surface of the liquid during pumping.
  • a gasket 44 encompasses the conical section 38 and bottom 41 of the pump housing. When the pump is secured over the filler 12 the gasket engages the top of the filler 12 to provide a fluid seal between the filler top and the conical section 38.
  • the central portion of the gasket has an aperture therethrough to permit the fluid tube 24 to pass downwardly into the bottle interior.
  • the gasket is retained in close proximity to the junction of the housing and the fluid tube. This securely covers the openings 42 to prevent the passage of liquid upwardly from the vaccum bottle into the interior space 34 ( Figure 4).
  • the lower portion of the gasket flexes away from the housing and fluid tube, as indicated in Figure 5, due to the air pressure generated by the pump unit. This permits the air to pass through the openings 42 and around the gasket end 50 into the interior of the vacuum bottle.
  • the gasket Upon completion of the pumping operation the gasket returns to its Figure 4 position to again seal the pumping unit.
  • the unit is secured to a vacuum bottle or other container for liquids by securing it to the top in the manner illustrated in Figures 1 and 3.
  • the index finger or thumb of the user is placed over the opening 32 of the disk 26 thereby sealing the pump interior 34.
  • the user then applies downward pressure to the disk while maintaining the seal thereby forcing the air contained in the interior space 34 downwardly through the openings 42 into the interior of the vacuum bottle.
  • This air pressure acts in a well understood manner to force the fluid in the container up the fluid tube 24 through the channel 22 and out of the spout 20 to a cup or glass, as desired.
  • the gasket 44 alternately seals and unseals the openings 42 to prevent back flow of liquid while permitting entry of air to the container.
  • FIG. 9 and 10 a sealing arrangement according to a second embodiment of the invention is illustrated.
  • the gasket illustrated in Figures 9 and 10 is not in physical contact with the fluid tube 24. Instead, it is spaced slightly therefrom by virtue of having a slightly larger diameter aperture 71.
  • the following dimensions are exemplary of the type of relationship between the outside diameter of the fluid tube and the diameter of the aperture through the bottom of the gasket:
  • a gasket 70 is provided with a relatively thick tapering wall 72 and a relatively thin bottom wall 74.
  • the opening 71 through the bottom of the gasket is defined by a circular bead 78 of increased dimension as compared to the bottom wall 74.
  • bead 78 is intended to normally maintain contact with the bottom portion 41 of the housing.
  • the holes 42 through the bottom portion 41 are located on the side of bead 78 opposite the tube 24 so that the bead normally provides a sealing relationship to prevent liquid from entering the pump interior through the holes 42.
  • the gasket When air is pumped, by operation of the disk and diaphragm, the resulting air pressure causes a slight flexing of bead 78 away from bottom portion 41 permitting air to pass into the vacuum filler to dispense the liquid contained therein.
  • the gasket should be formed of a suitable material which will retain its initial shape so that it will return to the desired sealing position after each flexing away from the bottom of the housing.
  • KRATON the material sold under the trademark KRATON.
  • the underside of gasket bottom 74 may taper upwardly and reduce in thickness (as viewed from the edge) to improve the flexing capability of the bead.
  • the angle of taper as measured from the edge, may be on the order of 3°. While this arrangement does not seal the pump unit against liquid as securely as the first embodiment does, it has the advantage of substantially reducing the amount of pressure required to operate the pump unit. This is due to the ease with which the gasket beam can be caused to flex away from the housing bottom 41 as compared to the pressure required to pass air around the gasket illustrated in Figures 4 and 5.
  • the pump housing 36 is provided with a plurality of guide ribs 52 spaced around its circumference. The ribs extend vertically substantially the entire length of travel of the disk between the positions illustrated in Figures 2 and 3.
  • the disk 26 is provided with a corresponding set of grooves defined by projections 56 and 58 which mate with the guide ribs 52.
  • projections 56 and 58 which mate with the guide ribs 52.
  • twisting movement of the disk is prevented by the projections tracking along the vertical length of the guide ribs.
  • Large angular displacement of the disk is also generally avoided by employing these ribs since thie problem is in part caused by the twisting movement of the disk.
  • the guide rib and groove arrangement provides a smoother and more efficient pumping operation than would otherwise be obtained.
  • the pump unit may be provided with an internal thread 60 for engaging a mating thread on the jacket 10 of the vacuum bottle.
  • the conical section 38 of the pump housing is dimensioned to securely seal on the filler opening so that as the threads are engaged the gasket 44 effects a good seal between the pump unit and the top of the filler.
  • the threads 60 permit the pump housing to engage the vacuum bottle jacket quickly and conveniently to allow the pump unit to be attached to or removed from the vacuum bottle for cleaning and refilling purposes.
  • this pump unit is designed for use with vacuum bottle or similar insulated containers, such as, foam bottles and the like.
  • Figure 8 illustrates the use of a pump unit according to the invention in conjunction with a quart container 64 which may be of the foam type of similar construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Food Science & Technology (AREA)
  • Closures For Containers (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Jet Pumps And Other Pumps (AREA)
EP78300022A 1977-06-06 1978-06-06 A pump dispenser for a vacuum bottle Expired EP0000093B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US80373677A 1977-06-06 1977-06-06
US803736 1977-06-06
US05/837,519 US4113147A (en) 1977-06-06 1977-09-29 Vacuum bottle with air pump to pressurized bottle to effect dispensing
US837519 1977-09-29

Publications (2)

Publication Number Publication Date
EP0000093A1 EP0000093A1 (en) 1978-12-20
EP0000093B1 true EP0000093B1 (en) 1982-04-07

Family

ID=27122625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78300022A Expired EP0000093B1 (en) 1977-06-06 1978-06-06 A pump dispenser for a vacuum bottle

Country Status (21)

Country Link
EP (1) EP0000093B1 (no)
JP (1) JPS543951A (no)
AU (1) AU526695B2 (no)
BR (1) BR7708159A (no)
CA (1) CA1073416A (no)
CH (1) CH631127A5 (no)
DE (2) DE2825223A1 (no)
DK (1) DK147822B (no)
ES (1) ES470554A1 (no)
FI (1) FI781785A (no)
FR (1) FR2393556A1 (no)
GB (1) GB1562122A (no)
GR (1) GR68703B (no)
HK (1) HK52481A (no)
IE (1) IE46915B1 (no)
IT (1) IT7824155A0 (no)
LU (1) LU79773A1 (no)
MX (1) MX146964A (no)
NL (1) NL7806168A (no)
NO (1) NO147737C (no)
SE (1) SE7806564L (no)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3317106A1 (de) * 1983-05-10 1984-11-15 Rotpunkt Dr. Anso Zimmermann, 6434 Niederaula Eine geschlossene schnaupe bildender ausgiesser sowie verfahren zur herstellung eines damit versehenen behaelters
GB2214240A (en) * 1988-01-06 1989-08-31 Laurence Patrick Wettern Wine aeration pump
US6612468B2 (en) 2000-09-15 2003-09-02 Rieke Corporation Dispenser pumps
US7802701B2 (en) 2005-01-14 2010-09-28 Rieke Corporation Up-lock seal for dispenser pump
EP1818108A1 (en) * 2006-01-30 2007-08-15 Chang-Keng Tsai Air pump device for a fluid dispenser

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE144412C (no) *
US2066977A (en) * 1935-04-27 1937-01-05 Lawrence E Iler Liquid dispenser
FR1014150A (fr) * 1949-05-12 1952-08-11 Porros Patentverwaltung G M B Fermeture de récipient avec dispositif de soutirage
US3162324A (en) * 1961-11-22 1964-12-22 Robertshaw Controls Co Pneumatic dispenser
JPS5034179B1 (no) * 1970-12-04 1975-11-06
JPS498986B1 (no) * 1971-08-03 1974-03-01
JPS5236363B2 (no) * 1972-03-07 1977-09-14
JPS5153488Y2 (no) * 1973-04-10 1976-12-21
JPS51148852A (en) * 1975-06-16 1976-12-21 Kiyoshi Miyagawa Safety stopper for vacuum bot tle

Also Published As

Publication number Publication date
IT7824155A0 (it) 1978-06-02
JPS543951A (en) 1979-01-12
AU3687078A (en) 1979-12-13
BR7708159A (pt) 1978-11-14
EP0000093A1 (en) 1978-12-20
DE2825223A1 (de) 1978-12-21
LU79773A1 (fr) 1978-11-28
SE7806564L (sv) 1978-12-07
CA1073416A (en) 1980-03-11
FR2393556B3 (no) 1981-01-30
NO781941L (no) 1978-12-07
DE2861714D1 (en) 1982-05-19
CH631127A5 (de) 1982-07-30
IE781097L (en) 1978-12-06
NO147737B (no) 1983-02-28
GR68703B (no) 1982-02-02
MX146964A (es) 1982-09-15
NO147737C (no) 1983-06-08
DK247778A (da) 1978-12-07
GB1562122A (en) 1980-03-05
IE46915B1 (en) 1983-11-02
AU526695B2 (en) 1983-01-27
DK147822B (da) 1984-12-17
ES470554A1 (es) 1979-10-16
HK52481A (en) 1981-11-06
NL7806168A (nl) 1978-12-08
FI781785A (fi) 1978-12-07
FR2393556A1 (fr) 1979-01-05

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