Fluid driven pump and portioning check valve

Details Fluid driven pump and portioning check valve Fluid driven pump and portioning check valve

1998-08-05

2000-12-19

Yuen, Henry C.

Pumps

Motor driven

Fluid motor

417383, F04B 4310

Patent

active

061620270

ABSTRACT:
A pump includes a housing, an enlarged block, an inlet fluid conduit, an outlet fluid conduit and a flexible diaphragm. The housing defines a chamber having an inlet and a spaced apart outlet. The enlarged block is located in the chamber and has a first region and a spaced apart second region. The inlet fluid conduit extends into the chamber, terminates at or near the first region of the enlarged block and has at least one fluid inlet aperture in the chamber. The outlet fluid conduit extends into the chamber, terminates at or near the second region of the enlarged block and has at least one fluid outlet aperture in the chamber. The flexible diaphragm is located in the chamber and is moveable between a first position in which a working fluid from the inlet fluid conduit is prevented from passing toward the outlet fluid conduit and a second position in which the working fluid from the inlet fluid conduit is allowed to pass toward the outlet fluid conduit.

REFERENCES:
patent: 3048121 (1962-08-01), Sheesley
patent: 3194170 (1965-07-01), Ulbing
patent: 3347461 (1967-10-01), Thorburn
patent: 3526223 (1970-09-01), Curtis
patent: 3630644 (1971-12-01), Bellhouse et al.
patent: 3782410 (1974-01-01), Steuby
patent: 3877838 (1975-04-01), Choy
patent: 4111613 (1978-09-01), Sperry
patent: 4230147 (1980-10-01), Booth et al.
patent: 4250872 (1981-02-01), Tamari
patent: 4257751 (1981-03-01), Kofahl
patent: 4301967 (1981-11-01), Hunter
patent: 4474540 (1984-10-01), Bonastia et al.
patent: 4722731 (1988-02-01), Vailancourt
patent: 5090446 (1992-02-01), Hunter et al.

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