Thermostatic expansion valve with check valve

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

2007-02-14

2008-10-28

Hepperle, Stephen M (Department: 3753)

Fluid handling

Systems

Dividing into parallel flow paths with recombining

C137S533250, C236S09200D

Reexamination Certificate

active

07441563

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 second valve opening disposed between the check valve chamber and the outlet chamber. A check valve member is movable relative to the second valve opening to restrict forward flow and permit reverse flow through the second valve opening.

REFERENCES:
patent: 664146 (1900-12-01), Hackett
patent: 919155 (1909-04-01), Giffen
patent: 2274436 (1942-02-01), Spence
patent: 3154096 (1964-10-01), Bell
patent: 3292658 (1966-12-01), Scaramucci
patent: 3809119 (1974-05-01), Cave
patent: 4886085 (1989-12-01), Miller
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patent: 5251459 (1993-10-01), Grass et al.
patent: 6354510 (2002-03-01), Petersen
patent: 6691924 (2004-02-01), Vestergaard et al.
International Search Report; Date of completion of search: Mar. 3, 2008; International Application No. PCT/US 0762394; Authorized officer: Lee W. Young; 7 pages.

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