Sealed piston pump

Details Sealed piston pump Sealed piston pump

1993-11-23

1995-11-21

Freay, Charles

Pumps

Motor driven

Electric or magnetic motor

92 93, 92151, F04B 1700

Patent

active

054681286

ABSTRACT:
A sealed piston pump having in an open cavity of the pump body, a circular single-piece set formed by a central cylindrical piston. The piston is coupled by a rod to a driving member while the piston in an alternating motion along its longitudinal axis. A ring is placed on the pump body which is hollowed out with an annular channel and a deformable thinned part connecting the piston to the ring. The single-piece set and the pump body are fixedly joined to each other in an imperviously sealed way. The single-block set is made of a synthetic material that is flexible and mechanically and chemically resistant. The pump can be advantageously used in ink-jet printers.

REFERENCES:
patent: 2241056 (1941-05-01), Chilton
patent: 2675758 (1954-04-01), Hughes
patent: 2856047 (1958-10-01), Firth
patent: 2928426 (1960-03-01), Taylor
patent: 3092032 (1960-12-01), Bentzinger
patent: 4495947 (1985-01-01), Motycka
patent: 4832582 (1989-05-01), Buffet
patent: 5055857 (1991-10-01), Regnault

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