Fuel blocking valve device

Details Fuel blocking valve device Fuel blocking valve device

2005-01-11

2005-01-11

Michalsky, Gerald A. (Department: 3753)

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

C137S039000, C137S493200

Reexamination Certificate

active

06840262

ABSTRACT:
A fuel blocking valve device includes a housing attached to a fuel tank of a vehicle and having a communication path between an inside and an outside of the fuel tank, a float valve for closing the communication path when fuel flows into the housing, and a two-way valve disposed above the float vale for opening and closing according to an inner pressure of the tank. The two-way valve opens and closes according to a difference between the inner pressure of the fuel tank and an atmospheric pressure. Further, the two-way valve includes a valve member for opening when the vehicle runs and vibrates. The valve member is formed of a spherical member and a cone shape valve seat for opening the communication path when the inner pressure of the fuel tank exceeds a predetermined high level.

REFERENCES:
patent: 4378815 (1983-04-01), Mochida et al.
patent: 5666989 (1997-09-01), Roetker
patent: 6164320 (2000-12-01), Hamano et al.
patent: 20040007262 (2004-01-01), Hattori
patent: 20040011401 (2004-01-01), Kato

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