Fuel cutoff valve

Details Fuel cutoff valve Fuel cutoff valve

2011-06-21

2011-06-21

Hepperle, Stephen M (Department: 3753)

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

Reexamination Certificate

active

07963296

ABSTRACT:
The fuel cutoff valve comprises a float and a valve mechanism situated within the valve chamber of a casing. The float has a supporting portion disposed in the upper portion of the float for supporting the valve mechanism, and having a supporting face formed with a flat surface or concave surface. The valve mechanism comprises a comprises a first valve main body having a supported part of convex shape supported on the supporting face, and a seat portion disposed on the first valve main body for opening and closing a connecting passage. The center of gravity of the valve mechanism is established below the point of support, when the supported part is supported on the supporting face so as to be balanced with the supported lower end portion as the point of support.

REFERENCES:
patent: 5413137 (1995-05-01), Gimby
patent: 6085771 (2000-07-01), Benjey et al.
patent: 6758235 (2004-07-01), Frohwein et al.
patent: 7784484 (2010-08-01), Furuya
patent: 63-150175 (1988-10-01), None
patent: A-07-279789 (1995-10-01), None
Notice of Rejection mailed on May 11, 2010 from the Japan Patent Office in counterpart Japanese application No. 2005-377646.

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