Vapor venting valve for vehicle fuel system

Details Vapor venting valve for vehicle fuel system Vapor venting valve for vehicle fuel system

1987-08-31

1988-08-23

Lowrance, George E.

Receptacles

Container attachment or adjunct

Filling member

141 59, 220 85VS, B65B 3106

Patent

active

047655046

ABSTRACT:
A vapor venting means for a vehicle fuel system in which one ball valve serves both the close off function between fuel fills, and the automatic shut off function during fuel fill, but does not depend upon falling under its own weight in order to open the vapor vent path to the canister. The ball valve is indirectly loaded against a lower valve seat, which is spaced from an upper spring seat, through the use of a spring loaded carrier that normally traps the ball valve against the lower seat. Then, when the nozzle is inserted, the carrier is pushed up so that the ball valve is freed without having to fall under its own weight. Since the ball valve is not confined or limited, it can also float up against the upper spring seat in the event of fuel overfill.

REFERENCES:
patent: 4630749 (1986-12-01), Armstrong
patent: 4706708 (1987-11-01), Fornuto
patent: 4707164 (1967-11-01), Harris
patent: 4714172 (1987-12-01), Morris
patent: 4715509 (1987-12-01), Ieo
patent: 4724861 (1988-02-01), Covert

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