HAND PUMP FOR PUMPING FLUID
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United States of America Patent
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N/A
Issued Date -
May 19, 2011
app pub date -
Nov 16, 2009
filing date -
Nov 16, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A hand operable pump device for pumping fluids includes a hollow body and an oval piston. The hollow body includes an inlet port and an outlet port. The inlet port is provided with a one-way valve permitting fluid flow into the pump. The outlet port is provided with a one-way valve permitting fluid flow out of the pump. The oval piston is designed to be pressed inwardly from an initial position by the hand, decreasing the volume of an oval chamber with a corresponding oval cross-section. The chamber is located within the pump and is fluidically connected with the inlet and outlet ports. The oval piston is further designed to return to the initial position when released, increasing the volume of the chamber.
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