Vented fuel cap with cam actuated connector

Receptacles – Closures – With condition responsive vent or valve

Patent

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Details

220301, 220303, 220 894, 220DIG33, B65D 4500

Patent

active

050317903

ABSTRACT:
A vented fuel tank cap and valve assembly is described having a cam actuated connector for connecting the cap to the top of the filler neck tube for the tank. Three vent passages are employed in the cap with common outlet openings. One passage is normally open but includes a float valve which can close such passage when the vehicle tips. A second passage includes a pressure relief valve which opens when the tank pressure exceeds a predetermined pressure. The bias spring for the pressure relief valve also functions as the bias for the cam actuated connector. The third passage includes fusible metal inserts provided in the movable pressure relief valve member to open such passage when the temperature of the tank exceeds the melting point of such inserts. The cam actuated connector includes ramp shaped cam surfaces on the outside of the filler neck tube and cam follower pins on the tank cap which move along the ramps and are urged into locking notches by a coil spring which also operates the pressure relief valve.

REFERENCES:
patent: 1286320 (1918-12-01), Hood
patent: 2747763 (1956-05-01), Sach
patent: 3386611 (1968-06-01), Crute
patent: 4795053 (1989-01-01), Kasugai et al.
patent: 4913303 (1990-04-01), Harris

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