Gas tank cap with roll-over valving

Details Gas tank cap with roll-over valving Gas tank cap with roll-over valving

B - Operations, Transporting

65

D

206/11

B65D 35/46 (2006.01) B60K 15/04 (2006.01) B65D 51/16 (2006.01)

Patent

CA 1072494

ABSTRACT OF THE DISCLOSURE A cap for closing the filler neck of a vehicle fuel tank, the cap comprising a valve housing, a pressure- vacuum valve assembly disposed in the housing to vent the tank when the pressure in the filler neck drops below a predetermined subatmospheric level and when the pressure in the filler neck exceeds a first predetermined superat- mospheric level, a roll-over valve for closing the pressure- vacuum valve assembly when the filler neck is tilted, and an excessive pressure valve or bypassing the pressure-vacuum valve when the pressure in the filler neck exceeds a second and greater predetermined superatmospheric level.

247521

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