Trigger actuated pump

Claim 2

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.

Claim 3

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.

Claim 4

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.

Claim 5

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.

Claim 6

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.

Claim 7

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

Claim 8

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.

Claim 9

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.

Claim 10

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; 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.

Claim 11

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; 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.

Claim 12

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.

Claim 13

The invention in accordance with claim 9 wherein the component retaining body comprises a discharge nozzle having incorporated therein said outlet port and the trigger being hingedly connected with surfaces of the component retaining body distal the discharge nozzle whereby the trigger is adapted to be actuated manually by the movement of the thumb of the operator of the pump.

Claim 14

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 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.

Claim 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 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.

Claim 16

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 forced out 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.

Claim 17

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

Claim 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 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.

Claim 19

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.

Claim 20

The invention in accordance with claim 15 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.

Claim 21

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.

Claim 22

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; 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.

Claim 23

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; 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.

Claim 24

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.

Claim 25

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.

Claim 26

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.