Thermostatic expansion valve with check valve

Details Thermostatic expansion valve with check valve Thermostatic expansion valve with check valve

2006-02-17

2008-10-14

Hepperle, Stephen M (Department: 3753)

Fluid handling

Systems

Dividing into parallel flow paths with recombining

C137S533190

Reexamination Certificate

active

07434597

ABSTRACT:
A valve is provided that comprises a valve body including an inlet, an outlet, and a check valve chamber having an opening through the side of the valve body. The valve has a cover secured within the side opening in the valve body. A first valve opening is disposed between the inlet chamber and outlet chamber. A control valve is movable relative to the first valve opening to regulate fluid flow through the first opening when fluid flow is in the inlet-to-outlet direction, and is movable to engage the first valve opening to restrict fluid flow in the outlet-to-inlet direction. The valve comprises a passageway between the inlet and check valve chambers, and a second valve opening disposed between the check valve and outlet chambers. A check valve is disposed within the check valve chamber, and is movable relative to the second valve opening to restrict forward flow and permit reverse flow through the second valve opening.

REFERENCES:
patent: RE19088 (1934-02-01), Carson
patent: 3109444 (1963-11-01), McKee
patent: 4214698 (1980-07-01), Josefsson
patent: 4766930 (1988-08-01), Patti
patent: 4964567 (1990-10-01), Heffner et al.
patent: 5251459 (1993-10-01), Grass et al.
patent: 5524819 (1996-06-01), Heffner et al.
patent: 5692539 (1997-12-01), Pickl, Jr.
patent: 6691924 (2004-02-01), Vestergaard et al.
International Search Report; Date of mailing of search: Mar. 3, 2008; International Application No. PCT/US 0762394; Authorized officer: Lee W. Young; 7 pages.

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