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US 5,474,210 AGranted
Fluid dispensing device
AssigneePump Products, Inc.
InventorSecil E. Boyd
Life of this patent
Estimating the term…
Abstract
A liquid spray device for mounting on a liquid container. The device comprises a spray member mountable over the opening of a container as a closure and a pump configured to pump air into the spray member and container. A discharge system including a discharge nozzle is selectively operable to discharge pressurized liquid from the spray member through the nozzle.
Claims26
A liquid spray device for mounting on a container, said device comprising:
- a cylindrical pumping chamber;
- a reciprocating plunger slidably mounted in said pumping chamber and extending through an opening in a top closure thereof;
- a tubular liquid receiving chamber located adjacent a bottom of said pumping chamber and above said container while oriented in an upright position, wherein said liquid receiving chamber includes an open bottom adapted for mounting on said container, said pumping and liquid receiving chambers having a common central axis extending along a length thereof;
- divider means for separating said pumping and liquid receiving chambers,
- a one way valve, proximate said divider means, for allowing only air to pass from said pumping chamber to said liquid receiving chamber;
- and
- discharge means including an outer end with a discharge nozzle thereon that is selectively operable to discharge pressurized liquid from said receiving chamber, said discharge means extending through a side wall of, and traversing an interior cross-section of, said liquid receiving chamber at a point intermediate said pumping chamber and the container.
4 more elements
A liquid spray device for mounting on a container, said spray device comprising:
- a tubular housing having a pumping chamber and a fluid receiving chamber separated by a divider having first and second apertures bored therein, said housing having a bottom end, with respect to an upright position, proximate said fluid receiving chamber for receiving said container and having a top end proximate said pumping chamber;
- pumping means received within said top end and extending into said pumping chamber for producing pressurized air;
- and
- valve means, fixedly secured within and extending through said first aperture into said pumping chamber, for passing said pressurized air from said pumping chamber to said fluid receiving chamber and for simultaneously preventing a flow of liquid from said fluid receiving chamber to said pumping chamber when said housing and said container are positioned in an inverted upside down position with respect to said upright position;
- and
- spraying means, extending through a side wall of said fluid receiving chamber and into an interior of said fluid receiving chamber, to discharge selectively said fluid from said fluid receiving chamber, said spraying means including a piston extending transversely from said fluid receiving chamber to a discharge nozzle and having a passageway therethrough which is selectively opened for discharging liquid when in said upside down position, said piston being normally biased outward to close said passage by a spring traversing said liquid receiving chamber.
3 more elements
A method for using a liquid spray device, having a pumping chamber and a fluid receiving chamber aligned immediately adjacent one another along a common central axis, said pumping chamber including a reciprocating plunger, said spray device being mounted on a container holding liquid, said method comprising the steps of:
- mounting a bottom end of said pumping and fluid receiving chambers upon a top opening of said container when said spray device and container are in a substantially upright position such that said pumping and fluid receiving chambers are aligned along common central axis which passes through a center of said top opening;
- introducing pressurized air into said container from said pumping chamber through said fluid receiving chamber by moving said reciprocating plunger along said central axis in a direction toward said fluid receiving chamber and said top opening of said container;
- inverting said spray device and said container to an upside down liquid dispensing position wherein said container is inverted and positioned directly above said fluid receiving chamber to utilize gravity to deliver liquid from said container to said fluid receiving chamber;
- and
- discharging pressurized liquid from said fluid receiving chamber while said spray device is inverted.
2 more elements
A liquid spray device for mounting on a container, said spray device comprising:
- a tubular housing having a pumping chamber and a fluid receiving chamber separated by a divider formed integral with said housing, said housing having a bottom end, with respect to an upright position, proximate said fluid receiving chamber for receiving said container and having a top end proximate said pumping chamber;
- pumping means received within said top end and extending into said pumping chamber for producing pressurized air;
- valve means received by said divider for permitting said pressurized air to pass from said pumping chamber to said fluid receiving chamber and for preventing a flow of liquid from said fluid receiving chamber to said pumping chamber when said housing and container are positioned in an upside down position inverted with respect to said upright position;
- spraying means, extending through a side of said housing and into said fluid receiving chamber, to discharge selectively said fluid;
- and
- said device additionally includes an air horn mounted on a discharge nozzle of said spray means.
3 more elements
A liquid spray device for mounting on a container, said spray device comprising:
- a tubular housing having a pumping chamber and a fluid receiving chamber separated by a divider formed integral with said housing, said housing having a bottom end, with respect to an upright position, proximate said fluid receiving chamber for receiving said container and having a top end proximate said pumping chamber;
- pumping means received within said top end and extending into said pumping chamber for producing pressurized air;
- valve means received by said divider for permitting said pressurized air to pass from said pumping chamber to said fluid receiving chamber and for preventing a flow of liquid from said fluid receiving chamber to said pumping chamber when said housing and container are positioned in an upside down position inverted with respect to said upright position;
- spraying means, extending through a side of said housing and into said fluid receiving chamber, to discharge selectively said fluid;
- and
- a retainer adapter, received within said bottom end of said housing, having a recess in a bottom end thereof and a hole surrounded by a flange on a top end thereof to support said container and to permit fluid to pass therethrough while in said upside down position.
3 more elements
Dependencies are inferred from the claim text.