Tank venting control assembly

Details Tank venting control assembly Tank venting control assembly

1991-01-08

1992-05-26

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

Vent opening or closing on tipping container

137493, 137494, 137587, 220746, F16K 1736

Patent

active

051162571

ABSTRACT:
An apparatus is provided for controlling discharge of fuel vapor and liquid fuel through an aperture in a fuel tank. The apparatus comprises a housing mounted in the aperture and formed to include a venting outlet, and a blocking mechanism for blocking the flow of fuel vapor through the venting outlet. The apparatus also includes a mechanism for using pressurized fuel vapor from the fuel tank to move the blocking mechanism from a flow-blocking position to a flow-delivery position. The using mechanism includes a diaphragm appended to the blocking means for movement therewith. The apparatus further includes a second mechanism for using fuel vapor discharged from the fuel tank to provide a pressure cushion acting against the diaphragm to urge the diaphragm from its second position toward its first position.

REFERENCES:
patent: 2819729 (1958-01-01), MacGregor
patent: 4699638 (1987-10-01), Harris
patent: 4714172 (1987-12-01), Morris
patent: 4787529 (1988-11-01), Harris
patent: 4790349 (1988-12-01), Harris
patent: 4816045 (1989-03-01), Szlaga et al.
patent: 4883103 (1989-11-01), Szlaga et al.
patent: 4953583 (1990-09-01), Szlaga

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