Roll over fuel cap

Details Roll over fuel cap Roll over fuel cap

1987-01-08

1988-01-05

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

With second control

137 43, 220203, F16K 1736

Patent

active

047169206

ABSTRACT:
A fuel cap having a pressure-vacuum valve assembly for sealing a vehicle fuel tank is provided. The cap has a normally closed vent to vent the fuel tank, with a first valve member to open the vent when the pressure within the tank reaches a predetermined superatmospheric level. The cap also has a second valve member to open the vent when the pressure within the tank reaches a predetermined subatmospheric level. The cap includes a roll-over valve disposed above the first and second valve members to close the vent when the vehicle and cap are rolled over to a substantially inverted orientation to prevent fuel from spilling out of the cap.

REFERENCES:
patent: 1893942 (1933-01-01), Jenson
patent: 3938692 (1976-02-01), Crute
patent: 3985260 (1976-10-01), Evans
patent: 4000828 (1977-01-01), Crute et al.
patent: 4162021 (1979-07-01), Crute

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