Roll over fuel cap

Details Roll over fuel cap Roll over fuel cap

F - Mech Eng,Light,Heat,Weapons

16

K

137/57

F16K 17/36 (2006.01) B60K 15/04 (2006.01)

Patent

CA 1283020

ABSTRACT OF THE DISCLOSURE 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.

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