Reversible flow valve assembly

Details Reversible flow valve assembly Reversible flow valve assembly

2009-05-27

2011-12-13

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

C251S175000, C251S176000, C251S208000

Reexamination Certificate

active

08074678

ABSTRACT:
A flow valve is provided that comprises a valve chamber including first and second valve port openings in communication with first and second inlet/outlets. The valve further includes a shaft rotatably disposed in the valve chamber, and a first valve plate rotatably coupled to the shaft that is disposed in the valve chamber over the first valve port opening. The first valve plate has a first tapered slot positioned therein so as to align with the first valve port opening. The first valve plate is configured to rotate from its closed position covering the first valve port opening to an open position, where rotation of the first valve plate adjustably positions a wider or narrower portion of the first tapered slot over the first valve port opening. The valve further includes a second valve plate that is configured to rotate with the first valve plate, and to cover the second valve port opening.

REFERENCES:
patent: 1751591 (1930-03-01), McCloskey
patent: 3987819 (1976-10-01), Scheuermann
patent: 4327758 (1982-05-01), Uhlmann
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patent: 5014736 (1991-05-01), Korfgen et al.
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patent: 6619613 (2003-09-01), Akamatsu et al.
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patent: 7168677 (2007-01-01), Gama et al.
patent: 7316384 (2008-01-01), Sekiya et al.
patent: 7628170 (2009-12-01), Kok-Hiong et al.

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