Valve

Details Valve Valve

2007-06-08

2010-11-16

Hepperle, Stephen (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C251S337000, C267S179000

Reexamination Certificate

active

07832422

ABSTRACT:
A valve includes a valve element; a valve seat; a coil spring; and a spring bearing portion. The coil spring, provided between the valve element and the spring bearing portion, presses the valve element toward the valve seat. An effective upper winding end of the coil spring and an effective lower winding end of the coil spring are offset from each other by 180 degrees in a plan view.

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patent: 2 318 349 (1977-02-01), None
patent: A 56-46128 (1981-04-01), None
patent: A 8-320074 (1996-12-01), None

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