Manually operated, trigger actuated diaphragm pump dispenser

Details Manually operated, trigger actuated diaphragm pump dispenser Manually operated, trigger actuated diaphragm pump dispenser

1980-02-28

1982-01-12

Spar, Robert J.

Dispensing

Resilient wall

Wall deflecting means

222380, 417479, 417560, 137512, B05B 9043

Patent

active

043101070

ABSTRACT:
A manually operated dispensing device for a container holding a quantity of liquid is disclosed. The device has an internal chamber and a flexible, elastomeric diaphragm-like cover on at least one side of the chamber in a component retaining body. Associated inlet and outlet valves, which valves may be discrete or integral with the diaphragm and body, and conduits are included whereby liquid from a supply thereof in the container is drawn up into the chamber when the diaphragm is flexed under stress. The diaphragm is operatively associated with a trigger device, the actuation of which flexes and stresses the diaphragm in a direction to decrease the chamber volume. Liquid which is present in the chamber is displaced and pressurized in a pumping action, forcing the outlet or discharge valve to open and the inlet valve to close allowing the liquid to flow into the outlet or discharge conduit and be dispensed from the device. Alternate application and relief of the above described flexing or stressing action of the diaphragm by alternate actuation and release of the trigger causes the inlet and outlet valves to alternately open and close, and liquid to be drawn into the chamber and be dispensed therefrom.

REFERENCES:
patent: 1656911 (1928-01-01), Eisenhauer
patent: 2065541 (1936-12-01), Shaffer et al.
patent: 2980032 (1961-04-01), Schneider
patent: 3685739 (1972-08-01), Vanier
patent: 3749290 (1973-07-01), Micallef

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