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Publication numberUS3749290 A
Publication typeGrant
Publication dateJul 31, 1973
Filing dateJun 7, 1971
Priority dateJun 7, 1971
Also published asCA954091A, CA954091A1, DE2227407A1, DE2227407B2, DE2227407C3
Publication numberUS 3749290 A, US 3749290A, US-A-3749290, US3749290 A, US3749290A
InventorsL Micallef
Original AssigneeLeeds & Micallef
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Trigger actuated pump
US 3749290 A
Abstract
A manually actuated trigger pump is adapted to be fitted on the neck of a container for dispensing a liquid therefrom. The pump includes an outer tubular shell having lower internal threads for fittedly engaging the outer threads on the neck of the container. A laterally extending nozzle projects from the shell either as an integral part thereof or as a separate component having means for securely fastening the nozzle to the shell. A bulbous tubular member defining a pump chamber is disposed interiorly of the shell. The upper part of the tubular member is adapted to be secured to the outer shell and also includes a concentric rim engageable with surfaces of the shell in defining an upper outlet valve. The lower end of the flexible tubular member is of lesser diameter and provides an inlet valve seat for receiving a ball check valve. A dip tube is adapted to extend downwardly from the lower end of the tubular member for providing a passage therethrough into the pump chamber of the liquid contents of the container. A trigger mechanism adapted to be finger actuated extends through the shell and is adapted to engage the tubular member and collapse it for expelling the contents of the pump chamber. In this connection, the lower check valve will close the lower end of the pump chamber and the collapsing of the tubular bulb will cause its liquid contents to be expelled out through the upper valve and out of the outlet opening into the nozzle into the selected discharge spray pattern. Upon release of the trigger, the tubular bulb will return to its original fully distended position. During this transition the upper outlet valve will reseal and the lower ball check valve will be unseated to permit liquid from the interior of the container to be pulled upwardly through the dip tube into the pump chamber. This amount of liquid will be replaced by a corresponding amount of air which will be permitted egress into the container interior through the opening of an air inlet valve defined by the outer surfaces of the bulb and radially inwardly extending surfaces of the outer shell. When the bulb is fully distended, this air check valve will be closed and the lower check valve at the base of the tubular member will be reseated to close the valve chamber until the next pumping cycle.
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United States Patent 1 Micallef i 1 TRIGGER ACTUATED PUMP [75] Inventor: Lewis A. Micallef, New York, N.Y.

[73] Assignee: Leeds and Micallef, New York, N.Y.

[22] Filed: June 7, 1971 [21] Appl. No.: 150,417

[52] US. Cl. 222/385 [51] Int. Cl 867d 5/42 [58] Field 01 Search 222/213, 383, 385,

[56] References Cited UNITED STATES PATENTS 2,772,817 12/1956 .lauch 222/540 X 3,494,512 2/1970 Haynes 222/383 2,709,025 5/1955 Scott 222/383 X 2,527,614 10/1950 Arpin 417/479 X 2,534,504 12/1950 Engstrom 222/383 X 3,248,021 4/1966 Corsette et al. 222/385 X Primary Examiner-Samuel F. Coleman Assistant Examiner-Norman L. Stack, Jr. Attorney-Kane, Dalsimer, Kane, Sullivan and Smith [5 7 ABSTRACT A manually actuated trigger pump is adapted to be fit- 1 July 31, 1973 disposed interiorly of the shell. The upper part of the tubular member is adapted to be secured to the outer shell and also includes a concentric rim engageable with surfaces of the shell in defining an upper outlet valve. The lower end of the flexible tubular member is of lesser diameter and provides an inlet valve seat for receiving a ball check valve. A dip tube is adapted to extend downwardly from the lower end of the tubular member for providing a passage therethrough into the pump chamber of the liquid contents of the container. A trigger mechanism adapted to be finger actuated extends through the shell and is adapted to engage the tubular member and collapse it for expelling the contents of the pump chamber. In this connection, the lower check valve will close the lower end of the pump chamber and the collapsing of the tubular bulb will cause its liquid contents to be expelled out through the upper valve and out of the outlet opening into the nozzle into the selected discharge spray pattern. Upon release of the trigger, the.tubular bulb will return to its original fully distended position. During this transition the upper outlet valve will reseal and the lower ball check valve will be unseated to permit liquid from the interior of the container to be pulled upwardly through the dip tube into thepump chamber. This amount of liquid will be replaced by a corresponding amount of air which will be permitted egress into the container interior through the opening of an air inlet valve defined by the outer surfaces of the bulb and radially inwardly extending surfaces of the outer shell. When the bulb is fully distended, this air check valve will be closed and the lower check valve at the base of the tubular member will be reseated to close the valve chamber until the next pumping cycle.

20 Claims, 11 Drawing Figures PAIENIEQJUL 31 ms sum 1 0F 7 INVENTOR LEW/6 A. Awe/1.445,:

ATTORNEYS PATENEEB M31 1975 3 M9 ,29 0

sum 2 BF 7 ATTORNEYS PATENIEU JUL 31 ms SHEET .7 OF 7 ailwwA m ATTORNEYS TRIGGER ACTUATED PUMP BACKGROUND OF THE INVENTION SUMMARY OF THE INVENTION This invention has as a principal object the construction and assembly of an extremely inexpensive manually operated trigger actuated pump constructed of a minimum number of parts, each individually simple and inexpensive to manufacture and assemble.

Another object is to provide a pump of the foregoing type which may be actuated by the forefinger of the hand holding the container and in accordance with a related embodiment the thumb of this hand.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the manually operated trigger actuated pump fitted on the neck of a container for liquid to be dispensed;

FIG. 2 is an exploded perspective view of the component parts of the pump drawn to an enlarged scale;

FIG. 3 is a longitudinal sectional view of the pump shown associated with the neck of the container with the bulbous tubular member defining the pump chamber shown in a fully distended position;

FIG. 4 is a similar view with the trigger actuated to collapse the bulbous tubular member to thereby expel the liquid contents of the pump chamber out through the dispensing nozzle;

FIG. 5 is a similar view showing the trigger retreating to its initial position to cause the bulbous tubular member to expand towards its fully distended position thereby causing liquid to flow into the pump chamber and air to enter the neck of the container to replace the liquid pulled into the pump chamber;

FIG. 6 is a cross-sectional view taken along the line 6--6 of FIG. 3;

FIG. 7 is a cross-sectional view taken along the line 7-7 of FIG. 4;

FIG. 8 is a bottom plan view;

FIG. 9 is a view similar to FIG. 3 but showing a different construction of outer shell;

FIG. 10 is a longitudinal sectional view of a somewhat preferred embodiment of pump; and

FIG. 11 is a longitudinal sectional view of another embodiment of a pump incorporating the teachings of this invention which is thumb actuated.

DETAILED DESCRIPTION OF THE DISCLOSED EMBODIMENTS In the drawings the manually operated finger actuated pump 10 is shown on the neck 12 of a container 14 having the selected liquid to be dispensed. In the embodiment of the pump shown in FIGS. 1 to 8, the pump includes an outer shell 16 and associated shell 18 both of which define a component retaining body, an interior flexible tubular member 20 defining pump chamber 22, a dispensing nozzle 24 which may form an integral part of the outer shell 16 and a trigger assembly 26 for actuating the walls of the tubular member 20 and, consequently, the pump chamber 22.

The outer shell 16 serves to couple the pump to the neck 12 of the container and, consequently, is formed with internal threads 28 which mate with the external threads 30 on the neck 12 of the container 14. The internal cylindrical wall 32 of shell 16 is furnished with a rather close fit with the outer wall of shell 18 for securely fastening therebetween the upper end of the tubular member 20. In this connection, the annular shoulder 34 of the outer shell engages with the associated upper surfaces of the tubular member 20. In addition, a top 36 of the outer shell is provided with an annular downwardly depending lip 38 which cooperates with associated surfaces on the upper end of the tubular member 20 in defining the upper outlet valve 40. The top 36 of the outer shell 16 extends into the integral outwardly depending nozzle 24 and is furnished with a passageway 44 which communicates with the discharge orifice 46 of the nozzle 24. It should be understood that nozzle 24 may be furnished with any one of a series of known dispensing nozzle configurations for purposes of providing the desired. discharge pattern of the contained liquid to be dispensed.

The inner shell 18 is tubular in configuration and cooperates with the outer shell 16 in securing the upper end of the inner tubular member 20 and at the same time is provided with a radially inwardly extending flange 48 which cooperates with associated surfaces of the tubular member 20 in defining the air inlet valve 50 which permits air to be introduced into the interior or headspace of the container 14 to replenish liquid drawn into the pump chamber 22. The upper end 52 of the inner shell 18 includes an outer annular and beveled face 54 which receives a correspondingly shaped surface of the upper end of the tubular member 20 to facilitate anchoring the tubular member 20 between the outer shell 16 and inner shell 18. The base of the inner shell 18 is provided with an annular sealing lip 56 which engages with the upper lip 58 of the neck 12 of the container 14. As will be appreciated this seal is effectuated upon screwing the outer shell 16 completely upon the neck 12. The inner shell 18 together with the outer shell 16 define an opening 60 through which the operating means of trigger 26 is adapted to travel in changing the volume of the pump chamber 22 during the pumping cycle.

The tubular member 20 is constructed of any one of many available moldable flexible materials of either synthetic or natural resin or plastic and is essentially elastomeric in nature. The upper end 62 of the tubular member 20 is larger in diameter than the lower end 64 and is provided with an outwardly extending radial flange 65 which terminates in a downwardly depending annular apron 66 having an inner beveled face 68 which meets with the beveled face 54 at the upper end of the inner shell 18. It will be noted in FIG. 3 that the periphery of the flange 65 and the apron 66 are disposed between the adjacent surfaces of the inner shell 18 andouter shell 16 to lock the tubular member 20 in place. The upper end 62 of the tubular member 20 is also provided with an upwardly extending annular sealing lip 70 which cooperates with the lip 38 at the upper end 36 of the outer shell 16 in defining the outlet valve 40, the opening and closing of which will be described in detail shortly. Theintermediate part of the tubular member 20 is defined by a tubular bulbous side wall 72 which defines the pump chamber 22. The lower end 64 of the tubular member 20 defines an annular valve seat 74 which cooperates with ball 76 in defining an inlet check valve 78 for sealing liquid in the pump chamber 22 and at the same time permits passage therethrough of liquid from the container interior into the pump chamber 22. Any one of a number of projections 80 may be adapted below the valve seat 74 to assure against the ball 76 being forced or driven down into the lower end 64 of the tubular member 20 or perhaps into the dip tube 82. The clip tube 82 is suitably connected to the bottom end 64 of tubular member 20 and serves to direct the liquid from the interior of the container 14 into the pump chamber 22. Projections 84 may also be provided on the interior of the tubular member 20 above the ball 76 to limit the extent of upward travel of the ball when unseated. The exterior surface of the bulbous side wall 72 cooperates with adjacent surfaces of the radial flange 48 in defining the air inlet valve 50 as explained above.

In the embodiment of pump under consideration, the trigger assembly 26 is coupled with the nozzle 24 by means of a hinged connection which may include recesses 86 in the exterior sides of the nozzle which conveniently receive the pins 88 which extend inwardly from the pair of spaced arms 90 at the upper end of the finger engaging trigger 92. An operating arm 94 is hingedly coupled with the trigger 92 and extends laterally therefrom. The hinge connection may be provided by means of the reduced thickness 96 at the juncture between the operating arm 94 and trigger 92. The other end of the arm 94 is provided with a depending flange 97 which extends through the opening 60 into engagement with the exterior of the bulbous side walls 72 of the tubular member 20.

Assuming the disposition of parts shown in FIG. 3 and the pump chamber 22 filled with liquid to be dispensed, the valves 40, 78 and 50 will be closed. When it is desired to dispense the liquid contents of the pump chamber 22, the trigger assembly 26 is actuated by applying finger pressure to the trigger 22 to move the operating arm 94 inwardly to cause the flange 97 to depress or collapse the bulbous side wall 72 to the position shown in FIG. 4. At the outset and during this movement, the ball 76 will be forced into tighter engagement with its seat 74 and the pressure of the contained liquid in chamber 22 will force the lip 70 at the upper end of the tubular member away from its associated lip 38 out of the outer shell 16 to open the valve 40. The pressurized liquid in pump chamber 22 will be forced out through the outlet opening thus provided by the open valve 40 into the opening 44 and out through the discharge orifice 46 of the nozzle 24. Upon release of the trigger 26, the elastic properties of the bulbous side walls 72 will urge tubular member 20 and particularly its side walls to return to its initial and normal molded condition. At the initiation of this return movement and throughout this return movement, the valve 40 will close automatically and the negative pressure within the pump chamber 22 will cause the ball 76 to unseat from its accommodating seat 74. This negative pressure will draw liquid from the interior of the container 14 up through the dip tube 82 into the pump chamber 22 until the bulbous side wall 72 assumes its fully distended position as shown in FIG. 3. Throughout this excursion, the liquid that is drawn up into the pump chamber 22 is replaced by air which is pennitted to enter the container interior or head-space through the opened valve 50. When the pump chamber 22 is filled, the valve 78 will close as well as the air inlet valve 50. The disposition of parts during the excursion from the collapsed position to the fully distended position of the tubular member 20 is shown in FIG. 5. When it is desired to dispense more of the liquid contents, the trigger assembly is actuated as often as desired and the pumping cycle will be repeated.

Reference is now made to FIG. 9 wherein another embodiment of pump 10a is disclosed. Corresponding parts will be similarly numbered with an accompanying subscript a. The essential difference between the embodiment shown in FIG. 9 and that shown in the preceding figures is the formation of the nozzle 24a and outer shell member 16a as separate parts while at the same time integrally forming the outer shell 16a and the inner shell 18a. Under these circumstances the tubular downwardly depending apron 100 of the nozzle 240 will be suitably secured by either heat or adhesive to the adjacent surfaces of the shells 16a and 18a. In all other respects, the construction and operation of the pump 10a is identical to that of the previously described pump 10 of the preceding figures.

A somewhat preferred embodiment of the invention is illustrated in FIG. 10 where parts corresponding to the other embodiments herein will be similarly numbered. Thus the pump 10b is of such a nature that the parts may be constructed at a relatively low cost and at the same time assembled at a lower cost. It will be noted that the grid 80 has been eliminated which may prove to be desirable in the event flashing may occur at this juncture incident to the molding of the tubular member 20 from certain moldable elastomeric materials. The ribs or lands 80b in the discussed embodiment serve the purpose of preventing the ball 76b from chattering and also prevent the ball from rolling out of position and thus possibly cause inadvertent unseating thereof from its valve seat when the pump 10b is tilted. Obviously the number and height of the lands 80b permit flow of product past the ball into the pump chamber when the ball 76 is unseated when it is desired to withdraw the product from the container into the pump chamber.

Referring now to the embodiment of the invention shown in FIG. 11, it should be understood that the pump is again essentially the same as the pump 10 of FIGS. 1 to 8 but in the present instance the pump is actuated by means of thumb pressure rather than the pressure of the operators forefinger and perhaps middle finger. As will be noted, the essential difference in these pumps is in the location of the trigger assembly 26b. In the embodiment of FIG. 11 the trigger assembly 26b is hingedly connected to the top 36c of the outer shell at a position distal that of the dispensing nozzle 24c which is shown as a lotion type nozzle but others can be used as well. Except for the finger of the operator that is used to actuate the pump and the relocation of the accommodating opening 60c in the shells 16c and 18c, the construction and operation of the pump of FIG. 11 is essentially the same as that of the preceding pumps 10, 10a, and 1017.

Thus, the several aforenoted objects and advantages are most effectively attained. Although several preferred embodiments of the invention have been disclosed and described in detail herein, it should be understood that this invention is in no sense limited thereby and its scope is to be determined by that of the appended claims.

I claim:

1. A manually operable liquid dispensing pump for use and incorporation on a container for liquid to be dispensed comprising in combination:

a component retaining body;

a tubular member carried by said body having a top and a bottom and having a flexible wall defining a variable volume pump chamber adapted to assume a fully distended position of maximum volume and a collapsed position of lesser volume;

an operating means carried by said body and adapted to be manually moved from a starting position and forced into engagement with the flexible wall of the tubular member to flex the flexible wall from its distended position to its collapsed position and permit the return of the wall to its distended position, whereupon the operating means resumes its starting position, liquid inlet port at said bottom and outlet port at said top, both ports being in communication with the pump chamber and having, respectively, an inlet valve and an outlet valve associated therewith, said inlet valve adapted to be closed when liquid to be dispensed is in the pump chamber and when it is dispensed therefrom as the pump chamber decreases in volume and adapted to be opened when the liquid to be dispensed is drawn into the pump chamber from the inlet port as the pump chamber volume increases and said outlet valve adapted to open when the pump chamber decreases in volume as the liquid therein is dispensed out the outlet port and adapted to close when the pump chamber increases in volume;

means being provided by cooperating surfaces of the tubular member and component retaining body for cooperating in directing the liquid to be dispensed out of the outlet port and eventually into the selected dispensing pattern and isolate this liquid away from the pump chamber and tubular member;

the operating means when forced into engagement with the flexible wall of the tubular member to reduce the volume of the pump chamber thereby pressurizing liquid to be dispensed in the pump chamber and, at the same time, with the inlet valve closed, causing the outlet valve to open whereupon the liquid in the pump chamber is adapted to flow into the outlet port and be dispensed therefrom; and

the operating means when permitted to return to and resume its starting position permits the volume of the pump chamber to increase thereby lowering the pressure in the pump chamber and, at the same time, with the outlet valve closed, causing the inlet valve to open whereupon the liquid to be dispensed is drawn through the inlet port into the pump chamber until the flexible wall of the tubular member reaches its distended position whereupon the inlet valve closes to trap the liquid to be dispensed in the pump chamber.

2. The invention in accordance with claim 1 wherein air network means are provided for permitting the passage of air from the ambient into the container to replenish the volume of the liquid to be dispensed which is drawn from the container interior into the pump chamber through the inlet port.

3. The invention in accordance with claim 1 wherein the container comprises a neck defining an opening and said pump extending across the opening defined by the neck, the component retaining body being in the form of a cap connected with the container neck.

4. The invention in accordance with claim 1 wherein the means cooperating in directing the liquid being dispensed includes a radially extending flange at the top of the tubular member which cooperates with the component retaining body in providing a seal which isolates the pump chamber from the outlet port and the path of travel of the liquid dispensed out of the outlet port.

5. The invention in accordance with claim 1 wherein the component retaining body includes means for connecting the pump across the opening of a container and a discharge nozzle extending in a lateral direction, the discharge nozzle defining said outlet port.

6. The invention in accordance with claim 5 wherein the operating means comprises a trigger and means hingedly connecting the trigger to the nozzle.

7. The invention in accordance with claim 1 wherein the component retaining body is comprised of an inner and outer shell connected with one another and threaded means on one of said shells for threadedly coupling the pump to the threaded neck of a container.

8. The invention in accordance with claim 7 wherein one of the shells includes sealing means for sealing the pump across the neck of the container.

9. A manually operable liquid dispensing pump for use and incorporation on a container for liquid to be dispensed comprising in combination:

a component retaining body;

a tubular member carried by said body having a flexible wall defining a variable volume pump chamber adapted to assume a fully distended position of maximum volume and a collapsed position of lesser volume;

an operating means carried by said body and adapted to be manually moved from a starting position and forced into engagement with the flexible wall of the tubular member to flex the flexible wall from its distended position to its collapsed position and permit the return of the wall to its distended position whereupon the operating means resumes its starting position, liquid inlet port and outlet port both being in communication with the pump chamber and having, respectively, an inlet valve and an outlet valve associated therewith, said inlet valve adapted to be closed when liquid to be dispensed is in the pump chamber and when it is dispensed therefrom as the pump chamber decreases in volume and adapted to be opened when the liquid to be dispensed is drawn into the pump chamber from the inlet port as the pump chamber volume increases and said outlet valve adapted to open when the pump chamber decreases in volume as the liquid therein is dispensed out the outlet port and adapted to close when the pump chamber increases in volume;

the operating means when forced into engagement with the flexible wall of the tubular member to reduce the volume of the pump chamber thereby pressurizing liquid to be dispensed in the pump chamber and, at the same time, with the inlet valve closed, causing the outlet valve to open whereupon the liquid in the pump chamber is adapted to flow into the outlet port and be dispensed therefrom;

use and incorporation on a container for liquid to be dispensed comprising in combination:

the operating means when permitted to return to and resume its starting position permits the volume of the pump chamber to increase thereby lowering the pressure in the pump chamber and, at the same time, with the outlet valve closed, causing the inlet valve to open whereupon the liquid to be dispensed is drawn through the inlet port into the pump chamber until the flexible wall of the tubular member reaches its distended position whereupon the inlet valve closes to trap the liquid to be dispensed in the pump chamber; and

the operating means being in the form of a trigger and an operating arm hingedly connected to and extending laterally from the trigger in the direction of the tubular member and essentially normal to the longitudinal axis thereof, and the component retaining body having an opening through which the operating arm extends to permit engagement of the operating arm with the tubular member upon actuation of the trigger.

10. The invention in accordance with claim 9 wherein the component retaining body includes a laterally projecting discharge nozzle having incorporated therein the outlet port and the trigger being hingedly coupled with the discharge nozzle.

11. The invention in accordance with claim 9 12. A manually operable liquid dispensing pump for a component retaining body;

a tubular member carried by said body having a flexible wall defining a variable volume pump chamber adapted to assume a fully distended position of 4 maximum volume and a collapsed position of lesser volume;

an operating means carried by said body and adapted to be manually moved from a starting position and forced into engagement with the flexible wall of the tubular member to flex the flexible wall from its distended position to its collapsed position and permit the return of the wall to its distended position whereupon the operating means resumes its starting position, liquid inlet port and outlet port both being in communication with the pump chamber and having, respectively, an inlet valve and an outlet valve associated therewith, said inlet valve adapted to be closed when liquid to be dispensed is in the pump chamber and when it is dispensed therefrom as the pump chamber decreases in volume and adapted to be opened when the liquid to be dispensed is drawn into the pump chamber from the inlet port as the pump chamber volume increases and said outlet valve adapted to open when the pump chamber decreases in volume as the liquid therein is dispensed out of the outlet port and adapted to close when the pump chamber increases in volume;

the operating means when forced into engagement with the flexible wall of the tubular member to reduce the volume of the pump chamber thereby pressurizing liquid to be dispensed in the pump chamber and, at the same time, with the inlet valve closed, causing the outlet valve to open whereupon the liquid in the pump chamber is adapted to flow into the outlet port and be dispensed therefrom;

the operating means when permitted to return to and resume its starting position permits the volume of the pump chamber to increase thereby lowering the pressure in the pump chamber and, at the same time, with the outlet valve closed, causing the inlet valve to open whereupon the liquid to be dispensed is drawn through the inlet port into the pump chamber until the flexible wall of the tubular member reaches its distended position whereupon the inlet valve closes to trap the liquid to be dispensed in the pump chamber; and

the tubular member including an upper end and a lower end with both ends being opened and the upper end being of larger dimension than the lower end, the lower end containing the inlet valve and the upper end cooperating with surfaces of the component retaining body for defining said outlet valve.

13. The invention in accordance with claim 12 wherein the lower end of-the tubular member defines a valve seat for the inlet valve, the inlet valve including a ball adapted to rest on the valve seat, means for preventing the ball from being forcedout of the tubular member into the container, and means for limiting the movement of the ball away from the valve seat when the inlet port is opened.

14. The invention in accordance with claim 13 wherein the lower end of the tubular member includes means for coupling with a dip tube.

15. A manually operable liquid dispensing pump for use and incorporation on a container for liquid to be dispensed comprising in combination:

a component retaining body;

a tubular member carried by said body having a flexible wall defining a variable volume pump chamber adapted to assume a fully distended position of maximum volume and a collapsed position of lesser volume;

an operating means carried by said body and adapted to be manually moved from a starting position and forced into engagement with the flexible wall of the tubular member to flex the flexible wall from its distended position to its collapsed position and permit the return of the wall to its distended position whereupon the operating means resumes its starting position, liquid inlet port and outlet port both being in communication with the pump chamber and having, respectively, an inlet valve and an oulet valve associated therewith, said inlet valve adapted to be-closed when liquid to be dispensed is in the pump chamber and when it is dispensed therefrom as the pump chamber decreases in volume and adapted to be opened when the liquid to be dispensed is drawn into the pump chamber from the inlet port as the pump chamber volume increases and said outlet valve adapted to open when the pump chamber decreases in volume as the liquid therein is dispensed out the outlet port and adapted to close when the pump chamber increases in volume;

the operating means when forced into engagement with the flexible wall of the tubular member to reduce the volume of the pump chamber thereby pressurizing liquid to be dispensed in the pump chamber and, at the same time, with the inlet valve closed, causing the outlet valve to open whereupon the liquid in the pump chamber is adapted to flow into the outlet port and be dispensed therefrom;

the operating means when permitted to return to and resume its starting position permits the volume of the pump chamber to increase, thereby lowering the pressure in the pump chamber and, at the same time, with the outlet valve closed, causing the inlet valve to open whereupon the liquid to be dispensed is drawn through the inlet port into the pump chamber until the flexible wall of the tubular member reaches its distended position whereupon the inlet valve closes to trap the liquid to be dispensed in the pump chamber; and

the tubular member and the component retaining body providing interengaging surfaces defining a normally closed air check valve for preventing air from passing therethrough into the container, and the air check valve adapted to be opened to permit replenishing of air in the container as a corresponding amount of liquid is drawn therefrom upon flexing of the flexible wall of the tubular member from its distended position to its collapsed position.

16. The invention in accordance with claim wherein the inlet valve is disposed below the air check valve such that distortion of the tubular member flexible wall upon collapsing of the wall by the operating means does not affect the closure afforded by the inlet valve.

17. The invention in accordance with claim 15 wherein the interengaging surfaces defining the normally closed air check valve include:

a radially inwardly extending flange engaging the outer face of the tubular body between the inlet port and the outlet port when the tubular member is in its distended position; and

when the tubular member is in its collapsed position the outer face is flexed away from the flange by the operating means.

18. A manually operable liquid dispensing pump for use and incorporation on a container for liquid to be dispensed comprising in combination:

a component retaining body;

a tubular member carried by said body having a flexible wall defining a variable volume pump chamber adapted to assume a fully distended position of maximum volume and a collapsed position of lesser volume;

an operating means carried by said body and adapted to be manually moved from a starting position and forced into engagement with the flexible wall of the tubular member to flex the flexible wall from its distended position to its collapsed position and permit the return of the wall to its distended position whereupon the operating means resumes its starting position, liquid inlet port and outlet port both being in communication with the pump chamber and having, respectively, an inlet valve and an outlet valve associated therewith, said inlet valve adapted to be closed when liquid to be dispensed is in the pump chamber and when'it is dispensed therefrom as the pump chamber decreases involume and adapted to be opened when the liquid to be dispensed is drawn into the pump chamber from the inlet port as the pump chamber volume increases and said outlet valve adapted to open when the pump chamber decreases in volume as the liquid therein is dispensed out the outlet port and adapted to close when the pump chamber increases in volume;

the operating means when forced into engagement with the flexible wall of the tubular member to reduce the volume of the pump chamber thereby pressurizing liquid to be dispensed in the pump chamber and, at the same time, with the inlet valve closed, causing the outlet valve to open whereupon the liquid in the pump chamber is adapted to flow into the outlet port and be dispensed therefrom;

the operating means when permitted to return to and resume its starting position permits the volume of the pump chamber to increase thereby lowering the pressure in the pump chamber and, at the same time, with the outlet valve closed, causing the inlet valve to open whereupon the liquid to be dispensed is drawn through the inlet port into the pump chamber until the flexible wall of the tubular member reaches its distended position whereupon the inlet valve closes to trap the liquid to be dispensed in the pump chamber; and

the outlet valve being defined by concentric interengaging surfaces of the upper part of the tubular member and the component retaining body, said interengaging surfaces defining a seal when the outlet valve is closed to retain the liquid contents of the chamber when the flexible wall is fully extended, and the seal is adapted to be broken and the outlet port opened upon flexing of the flexible wall from its distended position to its collapsed position.

19. The invention in accordance with claim 18 wherein the concentric interengaging surfaces include: an annular downwardly depending lip on the interior of the component retaining body; and

an upwardly extending annular sealing lip at the top of the tubular member engaging with radially outer surfaces of the lip of the component retaining body.

20. A dispensing pump for a substance to be dispensed comprising in combination:

a component retaining body;

a tubular member within said body having a top and bottom and having a distortable wall defining a variable volume pump chamber adapted to assume a fully distended position of maximum volume and a collapsed position of lesser volume;

an operating means to distort the wall from its distended position to its collapsed position and the operating means being adapted to resume its starting position, inlet port at said bottom and outlet port at said top both ports being in communication with the pump chamber and having, respectively, an inlet valve and an outlet valve associated therewith, said inlet valve adapted to be closed when the substance to be dispensed is in the pump chamber and when it is dispensed therefrom as the pump chamber decreases in volume and adapted to be opened when the substance to be dispensed is drawn into the pump chamber from the inlet port as the pump chamber volume increases and said outlet valve adapted to open when the pump chamber decreases in volume as the substance therein is dispensed out the outlet port and adapted to close when the pump chamber increases in volume;

means being provided by cooperating surfaces of the tubular member and component retaining body for cooperating in directing the substance to be dispensed out of the outlet port and eventually into the selected dispensing pattern and isolate this substance away from the pump chamber and the tubular member;

the operating means being adapted to permit the reduction of the volume of the pump chamber thereby pressurizing the substance to be dispensed in the pump chamber and, at the same time, with the inlet valve closed, causing the outlet valve to open whereupon the substance in the pump chamber is adapted to flow into the outlet port and be dispensed therefrom; and

the operating means being adapted to permit the volume of the chamber to increase thereby lowering the pressure in the pump chamber and, at the same time, with the outlet valve closed, causing the inlet valve to open whereupon the substance to be dispensed is drawn through the inlet port into the pump chamber until the wall of the tubular member reaches its distended position whereupon the inlet valve closes to trap the substance to be dispensed in the pump chamber.

I I t t t

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2527614 *Jan 29, 1948Oct 31, 1950Arpin John WilliamWater pistol
US2534504 *Sep 14, 1946Dec 19, 1950Oscar L EngstromBeverage dispensing apparatus
US2709025 *Mar 30, 1953May 24, 1955Willard Scott ThomasDispenser for measured quantity of paste
US2772817 *Mar 1, 1952Dec 4, 1956Robert J JauchDispensing pumps
US3248021 *Nov 26, 1962Apr 26, 1966Calmar IncLiquid dispenser
US3494512 *Feb 7, 1968Feb 10, 1970Richard H HaynesSelf-metering lubricating oil pump attachment device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3986644 *May 21, 1975Oct 19, 1976Diamond International CorporationDispensing pump
US3995774 *Sep 12, 1975Dec 7, 1976Diamond International CorporationLiquid dispenser having deformable diaphragm type pump
US4012177 *Aug 31, 1973Mar 15, 1977Yakich Sam SBlood pump tube element
US4101057 *Dec 2, 1976Jul 18, 1978Ethyl CorporationTrigger actuated pump
US4182465 *Jun 12, 1978Jan 8, 1980Bennett Robert AManually operated pump using hollow flexible member as pumping chamber
US4201317 *Jul 28, 1977May 6, 1980Aleff Hans PFinger actuated pump assembly
US4222501 *Jul 24, 1978Sep 16, 1980James D. Pauls And J. Claybrook Lewis And Associates, LimitedDual chamber, continuous action dispenser
US4227650 *Nov 17, 1978Oct 14, 1980Ethyl Products CompanyFluid dispenser and nozzle structure
US4241853 *May 17, 1978Dec 30, 1980James D. Pauls And J. Claybrook Lewis And Associates, LimitedDispenser for either continuous or intermittent discharge
US4260079 *Jan 25, 1978Apr 7, 1981The Afa CorporationManually operated liquid dispensers
US4310107 *Feb 28, 1980Jan 12, 1982The Afa CorporationManually operated, trigger actuated diaphragm pump dispenser
US4315582 *Apr 24, 1978Feb 16, 1982Leeds And MicallefUniversal sequential dispensing pump system free of external check valves and having venting capability
US4336895 *Feb 25, 1980Jun 29, 1982Aleff Hans PFinger actuated pump assembly
US4373644 *Feb 17, 1981Feb 15, 1983Bennett Robert AChild resistant type trigger actuated pump dispenser
US4479593 *Jul 9, 1982Oct 30, 1984Bundschuh Robert LPump dispenser with adjustable nozzle
US4589573 *Sep 14, 1982May 20, 1986Canyon CorporationHead depression type dispenser
US5152461 *Oct 1, 1990Oct 6, 1992Proctor Rudy RHand operated sprayer with multiple fluid containers
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
US5385302 *Oct 21, 1992Jan 31, 1995ConticoLow cost trigger sprayer
US5402916 *Jun 22, 1993Apr 4, 1995Nottingham Spirk Design AssociatesDual chamber sprayer with metering assembly
US5411185 *Jun 1, 1994May 2, 1995The Procter & Gamble CompanySpray pump package employing multiple orifices having an orifice selector system
US5425482 *May 13, 1994Jun 20, 1995Contico International, Inc.Trigger sprayer
US5542581 *Nov 25, 1994Aug 6, 1996Habora; Barbara M.Dual service sprayer
US5551636 *Jan 12, 1995Sep 3, 1996Contico Internatioal, Inc.Low cost trigger sprayer having elastomeric pump with internal guide means
US5593093 *Jan 12, 1995Jan 14, 1997Contico International, Inc.Low cost trigger sprayer having elastomeric pump and inlet valve
US5894960 *Apr 29, 1997Apr 20, 19993D Design And EngineeringPump mechanism for mechanical dispensers
US6116234 *Feb 1, 1999Sep 12, 2000Iep Pharmaceutical Devices Inc.Metered dose inhaler agitator
US6168050 *Jan 28, 1999Jan 2, 2001Guala Dispensing S.P.A.Hand-operated pump with a trigger, for dispensing liquids
US6279784 *Sep 27, 1999Aug 28, 2001O'neill Richard K.Trigger activated pump sprayer having a combination dual action spring and fluid chamber
US6679687Jul 3, 2001Jan 20, 2004California Institute Of TechnologyHydro elastic pump which pumps using non-rotary bladeless and valveless operations
US7338646 *Aug 1, 2002Mar 4, 2008Roteck LimitedMethod and apparatus for disinfecting items
US7387500Jan 20, 2004Jun 17, 2008California Institute Of TechnologyHydro elastic pump which pumps using non-rotary bladeless and valveless operations
US7793803 *Jul 3, 2003Sep 14, 2010Meadwestvaco Calmar Netherlands B.V.Bellows pump system and method for the use thereof
US8220156Jan 14, 2011Jul 17, 2012The Gillette CompanyLiquid dispensing hair removal kit
US8439232 *Jul 28, 2008May 14, 2013Leafgreen LimitedManual pump type fluid dispenser and a method of manufacturing such a dispenser
US8510957Mar 3, 2011Aug 20, 2013The Gillette CompanyApplicator with a baffle for a hair removal device
US8517221 *Dec 7, 2007Aug 27, 2013Meadwestvaco CorporationTrigger sprayer
US8782904Jan 14, 2011Jul 22, 2014The Gillette CompanyApplicator for liquid dispensing hair removal device
US8793879Jan 14, 2011Aug 5, 2014The Gillette CompanyCartridge biasing applicator for a hair removal device
US8832942Jan 14, 2011Sep 16, 2014The Gillette CompanyHair removal device with cartridge retention cover
US9156175 *Aug 15, 2012Oct 13, 2015The Gillette CompanyFluid applicator for a personal-care appliance
US20040151607 *Jan 20, 2004Aug 5, 2004California Institute Of Technology A CorporationHydro elastic pump which pumps using non-rotary bladeless and valveless operations
US20040223894 *Jan 8, 2002Nov 11, 2004David GilbertMethod and apparatus for disinfecting items
US20050189382 *Mar 3, 2005Sep 1, 2005Leafgreen LimitedDip tubes
US20060163286 *Jul 3, 2003Jul 27, 2006Peter Eduard NeerincxSystem of bellows and co-acting part, pump and method for the use thereof
US20090071982 *Sep 15, 2008Mar 19, 2009L'orealDispensing pump for product storage and dispensing container and container provided with such a pump
US20100140299 *Dec 7, 2007Jun 10, 2010Sweeton Steven LTrigger Sprayer
US20100193547 *Jul 28, 2008Aug 5, 2010Leafgreen LimitedManual pump type fluid dispenser and a method of manufacturing such a dispenser
US20130145623 *Jun 13, 2013Kevin James WainFluid Applicator for a Personal-Care Appliance
CN1096305C *Feb 9, 1999Dec 18, 2002瓜拉喷注公开有限公司Hand-operated pump with trigger, for dispensing liquids
DE2640836A1 *Sep 10, 1976Mar 17, 1977Leeds & MicallefManuell betaetigbare pumpe
DE2640837A1 *Sep 10, 1976Mar 17, 1977Leeds & MicallefManuell betaetigbare pumpe
DE2705071A1 *Feb 8, 1977Aug 11, 1977Afa CorpVon hand betaetigbare spruehvorrichtung mit automatischer behaelterentlueftung
DE2759594C2 *Oct 17, 1977May 13, 1993Tetsuya Tokio/Tokyo Jp TadaSpray gun assembly with trigger
DE3124441A1 *Jun 22, 1981Jun 3, 1982Us Cap & Closure IncPumpe fuer stroemungsmittelbehaelter
EP0097736A1 *Sep 15, 1982Jan 11, 1984Canyon CorporationHead depression type dispenser
EP0128585A2 *Jun 13, 1984Dec 19, 1984AFA Products, Inc.Hand manipulatable sprayer
EP0775499A2Nov 19, 1996May 28, 1997Iep Group, Inc.Counters for fluid dispensers
EP0951944A1 *Apr 21, 1998Oct 27, 1999Guala Dispensing S.R.L.Pump with cup-shaped diaphragm for trigger dispensers
EP1171712A2 *Apr 19, 2000Jan 16, 2002California Institute of TechnologyHydro elastic pump which pumps using non-rotary bladeless and valveless operations
WO2000044423A1Jan 31, 2000Aug 3, 2000Iep Pharmaceutical Devices IncMetered dose inhaler agitator
WO2001085245A1Apr 9, 2001Nov 15, 2001Iep Pharmaceutical Devices IncPneumatic breath actuated inhaler
Classifications
U.S. Classification222/207, 222/214, 222/209, 222/383.3
International ClassificationB05B11/00, F04B43/00, G01F11/08, F04B43/08
Cooperative ClassificationB05B11/303, F04B43/0018, B05B11/0016, F04B43/08, G01F11/08
European ClassificationB05B11/30E5B, F04B43/08, G01F11/08, F04B43/00D2
Legal Events
DateCodeEventDescription
Jan 22, 1985ASAssignment
Owner name: DOW CHEMICAL COMPANY, THE MIDLAND MICHIGAN 48640 A
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MORTON THIOKOL INC;REEL/FRAME:004354/0531