Two-piece suction pump

Claim 2

A dispensing pump adapted for use with a container for fluids, said container having a finish portion defining an open mouth comprising: a. a cap member having a substantially horizontally disposed mounting plate and integrally molded therewith, a downwardly depending outer annular skirt adapted for attachment to said finish, said outer annular skirt having an extension portion extending upwardly beyond the top surface of said mounting plate, a raised annular ring formed on the upper portion of said mounting plate and having a radius less than the radius of said extension portion of said outer annular skirt to form therebetween an annular groove, and a dispensing tube defining a passageway through said mounting plate communicating with the fluid contents of said container; b. a relatively flexible deformable member engaged to said cap member, said deformable member having an upper dome-shaped portion, said dome-shaped portion and said mounting plate cooperating to form a fluid receiving chamber, a downwardly depending annular skirt integrally molded with said dome-shaped portion, at least one fluid conducting groove formed in said downwardly depending skirt communicating with a fluid dispensing orifice in said downwardly depending skirt, a downwardly directed interior annular ring formed in the interior of said deformable member, said annular groove in said cap member and said annular ring in said deformable member being in sealing engagement to isolate said fluid receiving chamber when said dispensing pump is assembled, thereby serving as a check valve to allow fluid to pass only outwardly from said fluid receiving chamber towards said fluid dispensing orifice, and a cantilevered check valve integrally molded with said deformable member, said cantilevered check valve being adapted to close said passageway through said mounting plate when said deformable member is deflected.

Claim 3

The apparatus of claim 1 further including a downwardly depending inner annular skirt integrally molded with said mounting plate and having a radius less than that of said cap member outer annular Skirt, said inner annular skirt having a longitudinally extending vent means connecting the interior of said container with the atmosphere, said inner annular skirt being adapted to be placed within the opening of said finish.

Claim 4

The apparatus of claim 1, further including a plurality of spaced apart vertical projections extending upwardly from said extension portion of said outer annular skirt of said cap member for selective sealing engagement with said fluid conducting groove when said cap member and said deformable member are assembled to define said dispensing pump.

Claim 5

The apparatus of claim 1, further including a plurality of spaced apart vertical ribs integrally molded with the inner wall of said cap member downwardly depending outer annular skirt, said ribs having an upper, horizontally inwardly extending portion, integrally molded with the underside of said mounting plate, said rib horizontally extending portion serving to prevent said mounting plate from seating on said open mouth of said container.

Claim 6

The apparatus of claim 1, further including a plurality of spaced apart vertical ribs integrally molded with the exterior wall of said cap member downwardly depending outer annular skirt, said ribs serving to limit the downward engagement of said deformable member on said cap member.

Claim 7

A dispensing pump adapted for use with a container for fluids, said container having a finish portion defining an open mouth, comprising: a. a cap member having a substantially horizontally disposed mounting plate positioned over said finish, a dispensing tube extending through said plate and into said container, a downwardly depending outer annular skirt integrally molded with said plate and adapted for attachment to said finish having a portion thereof extending upwardly beyond the top surface of said mounting plate, a plurality of spaced apart vertical projections around the periphery of said outer annular skirt upwardly extending portion and extending upwardly therefrom, a raised annular ring located on the upper portion of said mounting plate having a radius less than the radius of said outer annular skirt upwardly extending portion to form therebetween an annular groove, a downwardly depending inner annular skirt integrally molded with said mounting plate having a radius less than the radius of said outer annular skirt and having a longitudinally extending flattened panel coextensive with its length, said panel serving to connect the interior of said container with the atmosphere, thereby serving as a vent for said container, said inner annular skirt further being adapted to be placed within the opening of said finish; b. a relatively flexible deformable member engaged to said cap member, said deformable member having an upper dome-shaped portion, said dome-shaped portion and said mounting plate cooperating to form a fluid receiving chamber, a depending annular skirt integrally molded with said dome-shaped portion, at least one fluid conducting groove integrally molded into said deformable member depending annular skirt communicating with a fluid dispensing orifice in said deformable member depending annular skirt, a downwardly directed interior annular ring having a radius less than that of said deformable member depending annular skirt, said deformable member annular ring and said annular groove in said cap member being in sealing engagement to isolate said fluid receiving chamber when said dispensing pump is assembled, thereby serving as a check valve to allow fluid to pass only outwardly from said fluid receiving chamber towards said fluid conducting groove in said deformable member, and a cantilevered check valve integrally molded with said deformable member, said cantilevered check valve being adapted to close said dispensing tube when said deformable member is deflected.

Claim 8

A dispensing pump adapted for use with a container for fluids, said container having a finish portion defining an open mouth, comprising: a. a cap member having a substantially horizontally disposed mounting plate positioned over said finish, a dispensing tube extending through said plate and into said container, a downwardly depending outer annular skirt integrally molded with said plate and adapted for attachment to said finish having a portion thereof extending upwardly beyond the top surface of said mounting plate, a plurality of spaced apart vertical projections around the periphery of said outer annular skirt upwardly extending portion and extending upwardly therefrom, a raised annular ring located on the upper portion of said mounting plate having a radius less than the radius of said outer annular skirt upwardly extending portion to form therebetween an annular groove, a downwardly depending inner annular skirt integrally molded with said mounting plate having a radius less than the radius of said outer annular skirt and having a longitudinally extending flattened panel coextensive with its length, said panel serving to connect the interior of said container with the atmosphere, thereby serving as a vent for said container, said inner annular skirt further being adapted to be placed within the opening of said finish; b. a relatively flexible deformable member engaged to said cap member, said deformable member having an upper dome-shaped portion, said dome-shaped portion and said mounting plate cooperating to form a fluid receiving chamber, a depending annular skirt integrally molded with said dome-shaped portion, at least one fluid conducting groove integrally molded into said deformable member depending annular skirt communicating with a fluid dispensing orifice in said deformable member depending annular skirt, a downwardly directed interior annular ring having a radius less than that of said deformable member depending annular skirt, said deformable member annular ring and said annular groove in said cap member being in sealing engagement to isolate said fluid receiving chamber when said dispensing pump is assembled, thereby serving as a check valve to allow fluid to pass only outwardly from said fluid receiving chamber towards said fluid conducting groove in said deformable member, and a cantilevered check valve integrally molded with said deformable member, said cantilevered check valve being adapted to close said dispensing tube when said deformable member is deflected.

Claim 9

The apparatus of claim 6, further including a plurality of spaced apart vertical ribs integrally molded with the inner wall of said cap member downwardly depending outer annular skirt, said ribs having an upper, horizontally inwardly extending portion, integrally molded with the underside of said mounting plate, said rib horizontally extending portion serving to prevent said mounting plate from seating on said open mouth of said container.

Claim 10

The apparatus of claim 6, further including a plurality of spaced apart vertical ribs integrally molded with the exterior wall of said cap member downwardly depending outer annular skirt, said ribs serving to limit the downward engagement of said deformable member on said cap member.

Claim 11

For use with a bottle having a neck portion defining an opening, said bottle containing a liquid to be dispensed, a pump comprising: a. a cap member having a mounting disc positioned over said opening, a dispensing tube extending through said disc and into said bottle, an outer annular skirt depending from the periphery of said mounting disc and having means thereon for engaging said neck portion, said outer annular skirt having a portion thereof extending upwardly beyond the top surface of said mounting disc, a raised annular ring formed on the upper portion of said mounting disc and having a radius less than that of said upwardly extending portion of said outer annular skirt to form therebetween an annular groove, a plurality of projections around the periphery of said upwardly extending portion of said outer annular skirt extending upwardly therefrom, said projections having spaces therebetween, and b. a flexible deformable member having a dome-shaped portion with an annular skirt depending downwardly therefrom, said annular skirt of said deformable member having at least one groove formed on the interior surface thereof and aperture means extending therethrough between said groove and the atmosphere, said annular skirt of said deformable member being rotatably engaged to the outer annular skirt of the cap member, said groove in said annular skirt of said deformable member being sealed to prevent dispensing of liquid when aligned with one of said projections and open to permit dispensing of liquid when aligned with one of said spaces between said projections, said dome-shaped portion cooperating with the mounting disc to define a fluid receiving cavity communicating with the bottle interior by means of said dispensing tube, a downwardly directed interior annular ring formed in the interior of said deformable member, said groove in said cap member and said annular ring in said deformable member being in sealing engagement to isolate said fluid receiving cavity when said pump is assembled, thereby serving as a check valve to allow fluid to pass only outwardly from said fluid receiving cavity towards said aperture means, and a valve member engageable with the upper end of said dispensing tube, said valve member including an arm extending radially inwardly into said cavity and being deflectable from a sealed position engaging the dispensing tube to an unsealed position by pressure changes within said cavity.

Claim 12

For use with a bottle having a neck portion defining an opening, said bottle containing a liquid to be dispensed, a pump comprising: a. a cap member having a mounting disc positioned over said opening, a dispensing tube extending through said disc and into said bottle, an outer annular skirt depending from the periphery of said mounting disc and having means thereon for engaging said neck portion, said outer annular skirt having a portion thereof extending upwardly beyond the top surface of said mounting disc, a raised annular ring formed on the upper portion of said mounting disc and having a radius less than that of said upwardly extending portion of said outer annular skirt to form therebetween an annular groove, a plurality of projections around the periphery of said upwardly extending portion of said outer annular skirt extending upwardly therefrom, said projections having spaces therebetween, and b. a flexible deformable member having a dome-shaped portion with an annular skirt depending downwardly therefrom, said annular skirt of said deformable member having at least one groove formed on the interior surface thereof and aperture means extending therethrough between said groove and the atmosphere, said annular skirt of said deformable member being rotatably engaged to the outer annular skirt of the cap member, said groove in said annular skirt of said deformable member being sealed to prevent dispensing of liquid when aligned with one of said projections and open to permit dispensing of liquid when aligned with one of said spaces between said projections, said dome-shaped portion cooperating with the mounting disc to define a fluid receiving cavity communicating with the bottle interior by means of said dispensing tube, a downwardly directed interior annular ring formed in the interior of said deformable member, said groove in said cap member and said annular ring in said deformable member being in sealing engagement to isolate said fluid receiving cavity when said pump is assembled, thereby serving as a check valve to allow fluid to pass only outwardly from said fluid receiving cavity towards said aperture means, and a valve member engageable with the upper end of said dispensing tube, said valve member including an arm extending radially inwardly into said cavity and being deflectable from a sealed position engaging the dispensing tube to an unsealed position by pressure changes within said cavity.

Claim 13

The apparatus of claim 9 further including a downwardly depending inner annular skirt integrally molded with said mounting plate having a radius less than that of said cap member outer annular skirt and having a longitudinally extending venting means connecting the interior of said bottle with the atmosphere, siad inner annular skirt being adapted to be placed within said bottle opening.

Claim 14

The apparatus of claim 9 further including a plurality of spaced apart vertical ribs integrally molded with the inner wall of said cap member outer annular skirt, said ribs having an upper, horizontally inwardly extending portion integrally molded with the under side of said mounting disc, said rib horizontally extending portion serving to prevent said mounting disc from seating on said bottle opening.

Claim 15

The apparatus of claim 9 further including a plurality of spaced apart vertical ribs integrally molded with the exterior wall of said cap member outer annular skirt, said ribs serving to limit the dOwnward engagement of said deformable member on said cap member.

Claim 16

For use with a bottle having a neck portion defining an opening, said bottle containing a liquid to be dispensed, a pump comprising: a. a cap member having a mounting disc positioned over said opening, a dispensing tube extending through said disc and into said bottle, an outer annular skirt depending from the periphery of said mounting disc and having means thereon for engaging said neck portion, said outer annular skirt having a portion thereof extending upwardly beyond the top surface of said mounting disc, a plurality of projections around the periphery of said outer annular skirt upwardly extending portion extending upwardly therefrom, said projections having spaces therebetween, a downwardly depending inner annular skirt integrally molded with said mounting disc having a radius less than that of said outer annular skirt and having a longitudinally extending flattened panel coextensive with its length, said panel serving to connect the interior of said bottle with the atmosphere, thereby serving as a vent for said bottle, said inner annular skirt being adapted to be placed within said bottle opening, a plurality of spaced apart first vertical ribs integrally molded with the inner wall of said outer annular skirt, said first ribs having an upper, horizontally inwardly extending portion integrally molded with the under side of said mounting disc, said ribs horizontally extending portion serving to prevent said mounting disc from seating on said bottle opening, a plurality of spaced apart second vertical ribs integrally molded with the exterior wall of said outer annular skirt, and a raised annular ring formed on the upper portion of said mounting disc having a radius less than that of said outer annular skirt upwardly extending portion to form therebetween an annular groove; b. a flexible deformable member having a dome-shaped portion with an annular skirt depending therefrom, said deformable member annular skirt having at least one fluid conducting groove formed on the interior surface thereof and aperture means extending therethrough between said fluid conducting groove and the atmosphere, said deformable member annular skirt being rotatably engaged to the outer annular skirt of said cap member, said cap member second vertical ribs serving to limit the downward engagement of said deformable member on said cap member, said fluid conducting groove being sealed to prevent dispensing of liquid when aligned with one of said projections and open to permit dispensing of liquid when aligned with one of said spaces, said dome-shaped portion cooperating with said mounting disc to define a fluid receiving chamber communicating with the bottle interior by means of said dispensing tube, a valve member engageable with the upper end of said dispensing tube, said valve member including an arm extending radially inwardly into said chamber and being deflectable from a sealed position engaging said dispensing tube to an unsealed position by pressure changes within said chamber, and a downwardly directed interior annular ring having a radius less than that of said deformable member annular skirt, said annular ring and said annular groove in said cap member being in sealing engagement to isolate said fluid receiving chamber when said pump is assembled, thereby serving as a check valve to allow fluid to pass only outwardly from said fluid receiving chamber towards said fluid conducting groove in said deformable member.

Claim 17

For use with a bottle having a neck portion defining an opening, said bottle containing a liquid to be dispensed, a pump comprising: a. a cap member having a mounting disc positioned over said opening, a dispensing tube extending through said disc and into said bottle, an outer annular skirt depending from the periphery of said mounting disc and having means thereon for engaging said neck portion, said outer annular skirt having a portion thereof extending upwardly beyond the top surface of said mounting disc, a plurality of projections around the periphery of said outer annular skirt upwardly extending portion extending upwardly therefrom, said projections having spaces therebetween, a downwardly depending inner annular skirt integrally molded with said mounting disc having a radius less than that of said outer annular skirt and having a longitudinally extending flattened panel coextensive with its length, said panel serving to connect the interior of said bottle with the atmosphere, thereby serving as a vent for said bottle, said inner annular skirt being adapted to be placed within said bottle opening, a plurality of spaced apart first vertical ribs integrally molded with the inner wall of said outer annular skirt, said first ribs having an upper, horizontally inwardly extending portion integrally molded with the under side of said mounting disc, said ribs horizontally extending portion serving to prevent said mounting disc from seating on said bottle opening, a plurality of spaced apart second vertical ribs integrally molded with the exterior wall of said outer annular skirt, and a raised annular ring formed on the upper portion of said mounting disc having a radius less than that of said outer annular skirt upwardly extending portion to form therebetween an annular groove; b. a flexible deformable member having a dome-shaped portion with an annular skirt depending therefrom, said deformable member annular skirt having at least one fluid conducting groove formed on the interior surface thereof and aperture means extending therethrough between said fluid conducting groove and the atmosphere, said deformable member annular skirt being rotatably engaged to the outer annular skirt of said cap member, said cap member second vertical ribs serving to limit the downward engagement of said deformable member on said cap member, said fluid conducting groove being sealed to prevent dispensing of liquid when aligned with one of said projections and open to permit dispensing of liquid when aligned with one of said spaces, said dome-shaped portion cooperating with said mounting disc to define a fluid receiving chamber communicating with the bottle interior by means of said dispensing tube, a valve member engageable with the upper end of said dispensing tube, said valve member including an arm extending radially inwardly into said chamber and being deflectable from a sealed position engaging said dispensing tube to an unsealed position by pressure changes within said chamber, and a downwardly directed interior annular ring having a radius less than that of said deformable member annular skirt, said annular ring and said annular groove in said cap member being in sealing engagement to isolate said fluid receiving chamber when said pump is assembled, thereby serving as a check valve to allow fluid to pass only outwardly from said fluid receiving chamber towards said fluid conducting groove in said deformable member.