US 3844452 A
A container having a pump mounted thereon wherein the container has an open top for receiving a tube coupled to the pump. The pump is disposed externally of the container and has means thereon for releasably attaching the lower end of the pump at the container top. The pump is constructed to allow a predetermined volume of the contents of the container to be dispensed therefrom for each stroke of the pump.
Claims available in
Description (OCR text may contain errors)
Tinited States Patent CONTAINER WITH REMOVABLE PUMP  Inventor: Marshall R. Blum, c/o Gable Sales Company, 1224 Mariposa, San Francisco, Calif.
 Filed: Mar. 22, 1972 21 Appl. No.: 237,211
Related US. Application Data  Continuation of Ser. No. 42,418, June 1, 1970,
 US. Cl 222/321, 222/380, 222/382, 222/383  Int. Cl B67d 5/42  Field of Search 222/372, 380, 383, 321, 222/382, 384, 566, 567, 569; 277/178  References Cited UNITED STATES PATENTS 1,817,673 8/1931 Buttner 222/383 X 2,521,961 9/1950 Bachel1er.... 222/321 2,619,914 12/1952 Dobkin 222/383 X 2,774,517 12/1956 Teegardin et a1 222/380 X Oct. 29, 1974 2,818,201 12/1957 Peck 222/383 X 3,198,400 8/1965 Roehrich 222/321 X 3,282,472 11/1966 Roder 222/380 X 3,406,909 10/1968 Pfeiffer 222/321 X 3,563,557 2/1971 Doutt 277/178 FORElGN PATENTS OR APPLlCATIONS 336,931 2/1936 ltaly 222/383 Primary Examiner-Robert B. Reeves Assistant ExaminerChar1es A. Marmor Attorney, Agent, or FirmTownsend & Townsend [5 7 ABSTRACT A container having a pump mounted thereon wherein the container has an open top for receiving a tube coupled to the pump. The pump is disposed externally of the container and has means thereon for releasably attaching the lower end of the pump at the container top. The pump is constructed to allow a predetermined volume of the contents of the container to be dispensed therefrom for each stroke of the pump.
3 Claims, 3 Drawing Figures CONTAINER WITH REMOVABLE IPUMIP This application is a continuation of application Ser. No. 42,418 filed June I, 1970, now abandoned.
This invention relates to improvements in the dispensing of materials from containers and, more particularly, to a container having an external pump releasably attached thereto.
In dispensing milk or other liquid food products from containers, it is oftentimes desirable to draw out a predetermined volume of the container contents so as to be able to fill glasses, cups and the like which are limited in size and can contain only a limited volume of liquid. It is also desirable that a suitable pump be provided for such a container so as to be able to dispense a predetermined volume of the container contents for each stroke of the pump and to permit the pump to be mounted on the container so that it does not extend into the container. This latter feature assures that the predetermined volume of the container contents can be dispensed by the pump without requiring a relatively long pump inasmuch as the pump can be larger than the opening in the container tip and thereby be made of a size sufficient to pump the predetermined volume. Also, by releasably connecting the pump to the container, the pump can be cleaned and reused after the container has been emptied.
The present invention is directed to the combination of a container having an open top and a pump releasably connected to the container wherein the pump is disposed externally of the container and has a size greater than the opening so that the pump need not extend into the container and upwardly therefrom through a relatively long distance. This feature assures that the pump chamber can be of a size sufficient to permit a predetermined volume of the material in the container to be dispensed therefrom for each stroke of the pump. To this end, the pump is provided with a structure on its lower end for releasably attaching it to the container at the open top thereof. Also, the pump has a tube which extends into the container so as to draw out the contents therein each time the pump is actuated. The container can be of any suitable construction, such as a glass jar or a disposable, plastic-coated paper container of the type used for milk products. The pump can be of simple construction and can be readily secured to and removed from the container. Also, it can be formed from parts which are readily separated from each other and quickly reassembled to allow for frequent cleaning.
The primary object of this invention is to provide a container having an open top and a pump releasably connected to the container in communication with the open top wherein the pump is disposed externally of the container and is larger in size than the open top so as to assure that a predetermined volume of material can be pumped out of the container for each stroke of the pump without the need for a relatively long pump of the type which extends into the container and upwardly therefrom through a relatively long distance.
Another object of this invention is to provide a container and pump combination of the type described wherein the pump has means thereon for making a releasable connection with the container in surrounding relationship to the open top thereof and the pump can be quickly assembled and disassembled so that it can be frequently cleaned to thereby render it suitable for use in dispensing food products from a container.
Other objects of this invention will become apparent as the following specification progresses, reference being had to the accompanying drawing for an illustration of the invention.
In the drawing:
FIG. I is a perspective view of a container and pump combination forming one embodiment of the invention;
FIG. 2 is an enlarged cross-sectional view of a portion of the combination of FIG. I; and
FIG. 3 is a fragmentary side elevational view of a second embodiment of the combination.
The first embodiment of the invention is shown in FIGS. l and 2 and includes a container 10, a pump 12 and a means 14 on the pump for releasably securing the pump to the container adjacent to the open top 16 thereof. The container comprises a jar of glass or other suitable material, the jar having a neck 18 which terminates at the open top 16 and, for purposes of illustration only, is of a reduced cross section relative to the larger portion of the jar. The outer surface of the neck is provided with the threads to threadably receive a lid to close the jar. Other jar configurations can be used as desired.
Pump 12 has a cylindrical housing 20 which is larger in diameter than the open top 16 of the jar. The housing has a bottom wall 22 intergral with its sidewall 23 and provided with a central, tubular extension 24 which projects downwardly therefrom. A beveled surface 26 in bottom 22 is aligned with extension 24 and provides a seat for a ball valve 28. A tube 30 is pressfitted in extension 24 and depends therefrom. Tube 30 is adapted to be inserted into container 10 and is preferably of a length to extend substantially to the bottom of the container.
A circular piston 32 is disposed within housing 20 and slidably engages the inner surface 34 of sidewall 23, whereby the piston can move upwardly and downwardly within the chamber enclosed by the sidewall. A shaft 36 is coupled to the center of the piston and extends upwardly therefrom through a hole 38 and a cap 39 is removably mounted on the upper end of housing 20. The shaft is shiftable relative to the cap so that piston 32 can be manually raised and lowered. The cap can be provided with threads or other structure which permits it to be releasably connected to the sidewall 23 which allows quick disassembly of the pump for cleanmg.
A nozzle 40 is removably connected to the upper end of shaft 36. To this end, nozzle 40 has a sleeve 42 which slides on to the upper end of the shaft and a laterally projecting section 44 is integral with sleeve 42. Section 44 has a fluid passage 46 therethrough which communicates with a space 48 formed in nozzle 40 adjacent to the upper end of shaft 36. Nozzle 40 has an open outer end 41, whereby fluid can exit therefrom. A ball valve 52 is disposed within space 48 for closing the upper end of passage 37. To this end, shaft 36 has a concave seat 54 for ball valve 52.
Connecting means 14 includes an annular skirt 56 rigidly connected to sidewall 23 and extending downwardly therefrom in surrounding relation to extension 24. Skirt 56 is adapted to be threadably connected with neck I8 whereby the container and the pump can be coupled together.
In operation, pump 12 is assembled in the manner shown in FIG. 2. It will first be connected by means of skirt 56 to container with tube 30 extending into the container. The pump and the container will then form the dispensing unit.
The contents of the container are drawn out of the same by lifting nozzle 40 to cause piston 32 to rise within the space defined by sidewall 23. When this occurs, a suction is created in the region below the piston and the container contents rise in tube 30 and unseat ball valve 28 so that the contents can flow into the region below the piston as it continues to rise. At the top of its stroke the pump is actuated by forcing nozzle downwardly. This causes the liquid below the piston to rise in passage 37 and to cause ball valve 28 to close the upper end of extension 24. As the liquid rises in passage 37, it unseats ball valve 52, flows into space 48, through passage 46, and out the same through open end 40. The pump is again charged with liquid from the container by moving nozzle 40 and thereby piston 32 in the manner described above. Each time the pump is actuated, it dispenses a predetermined volume of liquid until the container is emptied.
When the container is emptied, the pump can be removed therefrom and disassembled for cleaning. Sleeve 42 can be removed form shaft 36, cap 39 can be separated form the pump housing, and tube 30 can be separated from extension 24. All of these parts can then be cleaned individually and reassembled, whereupon the pump is ready for use again with a full container.
FIG. 3 illustrates the use of another type of container as a part of the combination of this invention. To this end, a container 60 is provided, the container being of the disposable type conventionally used for containing milkproducts. lt includes four walls and a top having a pair of sloping top sections which terminate at a centrally disposed, upwardly extending seal extension 62. Pump 12 is removably connected to container 60 by a suitable attachment 64 which has a tubular neck 66 adapted to be aligned with a hole in the top of the container when the attachment is releasably secured in any suitable manner to seal extension 62. Neck 66 is provided with an annular, upright projection 68 which is threadably connected to skirt 56 to interconnect pump 12 and neck 66.
Pump 12 is used with container 60 in the same manner as it is with container 10. The container top will have been provided with a hole therein to accommodate tube 30 of the pump before the pump is connected to neck 66.
What is claimed is:
l. A manually reciprocable pump for dispensing the contents of a container having an outlet, said pump comprising:
a housing having an open upper end, sidewalls defining a chamber and a lower end, an integrally formed downwardly depending internally threaded annular skirt on the lower end thereof adapted to be coupled to said container for mounting said pump thereabove, said housing having a lower wall member integrally formed with said sidewalls and positioned within said annular skirt, said lower wall member having an integrally formed outwardly extending tubular inlet member centrally located within said skirt and provided with a first valve seat on the inner side thereof;
an inlet tube coupled to said inlet member and having a distal end adapted to be immersed in said contents;
a closure cap releasably secured to said upper end of said housing, said closure cap having a central aperture therein;
a manually reciprocable hollow shaft having an upper end and a lower end, said shaft being slideably received in said central aperture;
an annular piston secured to the lower end of said hollow shaft, said piston having a peripheral groove and a sealing member mounted in said groove in sealing contact with the walls of said chamber, the combined diameter of said piston and said sealing member being no less than the diameter of said container outlet, said piston having a central bore for providing fluid communication between the interior of said shaft and the volume below said piston;
a first one-way valve located in said chamber between said piston and said first valve seat, said first valve permitting flow from said inlet tube to said chamber when said piston is translated away from said inlet tube in response to upward movement of said shaft;
the upper end of said shaft being provided with a second valve seat;
a nozzle including a hollow sleeve releasably connected to said upper end of said shaft and a projecting section integral with said sleeve and extending laterally outwardly therefrom, said section including a fluid passage communicating through said sleeve with said shaft for dispensing material from said chamber through said shaft; and
a second one-way valve positioned within said hollow sleeve in cooperative relation with said second valve seat, said second valve permitting flow from said chamber through said nozzle when said piston is translated toward said inlet tube in response to downward movement of said shaft;
the structure of said pump as defined herein permitting facile disassembly and assembly thereof and enabling said pump to be quickly attached to said container; and
an intermediate attachment member for coupling said pump to an associated carton having a V- shaped sloping top closure member with a central upstanding rib, said attachment member comprising a unitary base member having a lower surface conformable with said sloping top closure member for embracing said rib, and a tubular neck secured to said surface laterally of said rib when said attachment member is received on said carton, said neck having a lower end adapted to be received by an aperture in said top closure member and a threaded upper end coupled to said annular skirt, whereby said pump is secured to said attachment member.
2. The combination of claim 1 wherein said first and second valves each comprise a ball freely disposed adjacent the associated valve seat.
3. The combination as set forth in claim 1 wherein the pump has a predetermined stroke, the pump being operable to dispense a predetermined volume of material from the container for each stroke of the pump.