Fuel cutoff valve

Details Fuel cutoff valve Fuel cutoff valve

2011-05-03

2011-05-03

Schneider, Craig M (Department: 3753)

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

C137S043000

Reexamination Certificate

active

07934514

ABSTRACT:
A fuel cutoff valve comprises a casing having a seal portion disposed facing a connecting passage and projecting in annular configuration towards a valve chamber; and a float mechanism having a float which rises and falls due to increasing and decreasing buoyancy according to the fuel level within the valve chamber. The float comprises a flexural depression-enabling recess situated on its upper surface at a location in opposition to the seal portion, for enabling the seat portion to undergo flexural depression when pressed by the seal portion. The casing has a regulating portion on the outside perimeter of the seal portion, for regulating the level of elastic deformation at which the seat portion elastically deforms into the flexural depression-enabling recess.

REFERENCES:
patent: 4753262 (1988-06-01), Bergsma
patent: 5172714 (1992-12-01), Kobayashi et al.
patent: 5638856 (1997-06-01), Ohsaki
patent: 7527064 (2009-05-01), Kito et al.
patent: 2002/0112757 (2002-08-01), DeCapua et al.
patent: 3331269 (2002-07-01), None
patent: A-2005-297787 (2005-10-01), None

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