Self-closing gas for automatic filling machines

Fluent material handling – with receiver or receiver coacting mea – Filling means with receiver or receiver coacting means – Extensible or expansible inserted coupler or centering means...

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Details

141301, 220 862, 220DIG33, B65B 104

Patent

active

060359064

ABSTRACT:
A self-closing cap for the fuel filler neck of a vehicle is provided which is particularly adapted for use with an automatic gas filling machine. The cap comprises a closure ring having an annular body and screw threads or bayonet lugs for detachably mounting the periphery of the annular body around the open end of the filler neck, and a closure flap assembly formed from a circular member with a nozzle receiving opening, a closure flap spring biased over the opening, and a pivotal mounting connecting the flap over the opening. The closure flap assembly includes a locking ratchet mechanism for securing the circular member over the closure ring in a selected angular position such that the pivotal mounting is substantially 180.degree. opposite from the pivotal connection of the restrictive flap within a filler neck of a vehicle to allow a fuel nozzle from an automatic gas filling machine to be smoothly inserted into and withdrawn from the self-closing cap. The cap has a cover that snap-fits over the closure flap assembly. The top wall of the cover serves as an inclined guide face for guiding the nozzle of an automatic gas filling machine into the opening of the closure flap assembly. An overpressure valve assembly is incorporated into the circular member for releasing vapor and gases from the vehicle fuel tank when the pressure in the tank approaches a tank-rupturing level.

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patent: 5547099 (1996-08-01), Chang
patent: 5720328 (1998-02-01), Ott
Fuel Filler Cap, Research Disclosure, No. 352, Aug. 1, 1993, 551 XP000395278, see Paragraph 2, see Fig. 1.

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