Fuel system shut-off valve

Details Fuel system shut-off valve Fuel system shut-off valve

2005-10-11

2005-10-11

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S498000, C137S509000, C137S540000, C123S456000, C123S1980DB, C251S120000

Reexamination Certificate

active

06953052

ABSTRACT:
A fuel system shut-off valve includes a valve body bounding a fuel space, the valve body having an inlet opening and an outlet opening communicating with the fuel space. A piston assembly in the fuel space includes a main piston member that is movable relative to the valve body and an auxiliary piston member that is movable relative to the main piston member. The piston assembly either allows or prevents fuel flow through the valve from the inlet opening towards the outlet opening depending on the position of the auxiliary piston member. A force member urges the piston assembly towards the inlet opening.

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patent: 6668802 (2003-12-01), Kiowsky et al.
patent: 197 47 092 (1999-04-01), None

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