Hand held and hand operated pumping and siphoning device

Fluid handling – Siphons – With flow starting – stopping or maintaining means

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Details

137151, 417469, F04F 1000

Patent

active

045748284

ABSTRACT:
A hand held and hand operated device is capable of pumping or siphoning a liquid. The device includes a pair of telescoping hollow tubes having a single longitudinal axis with a seal therebetween that is maintained when one of the tubes is reciprocated relative to the other. Each of the tubes has a conical valve seat at its distal end with each conical valve seat having the same selected angle to the single longitudinal axis of the tubes. Each seat has a separate stainless steel ball to seal on the seat whenever the longitudinal axis of the tubes is at a greater angle to the horizontal than the selected angle of each conical seat to the longitudinal axis. In this position, reciprocation of the tubes causes pumping of the liquid through alternatively removing each of the balls from its seat due to pressure differentials created by changing the volume within the tubes between the balls. When reciprocation of the tubes has filled the device with liquid, siphoning can occur through holding the longitudinal axis of the tubes at an angle to the horizontal less than the selected angle of the conical valve seats to the longitudinal axis so that neither of the balls engages its seat. No priming is necessary to initiate siphoning since it depends solely upon the pumping action initially causing liquid to flow into the hollow tubes through which the liquid will continue to flow when siphoning is occurring.

REFERENCES:
patent: 383153 (1888-05-01), Siersdoafer
patent: 1494737 (1924-05-01), Counyer
patent: 2233123 (1941-02-01), Fritts
patent: 2341129 (1944-02-01), Thompson
patent: 3594103 (1971-07-01), Hillis

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