Fluid handling – Diverse fluid containing pressure systems – Fluid separating traps or vents
Patent
1986-08-18
1988-02-16
Chambers, A. Michael
Fluid handling
Diverse fluid containing pressure systems
Fluid separating traps or vents
137588, 137599, 141 59, 141302, 220 86R, F16K 2400
Patent
active
047248610
ABSTRACT:
A fuel tank filler neck has a partition providing a vent orifice for vapor flow from a fuel introduction tube to a vapor discharge fitting. A ball valve guided beneath the orifice is adapted to float into engagement across the orifice to prevent liquid fuel from passing through said orifice. A filler neck restrictor plate is carried on an actuating arm that has a cam surface engaging the ball valve. The cam surface engages the ball valve across the orifice to inhibit flow of fuel vapor through the orifice when the restrictor plate inhibits introduction of fuel through the filler neck, and permits the ball valve to drop away from the orifice to permit flow of fuel vapor through said orifice when the restrictor plate permits introduction of fuel through the filler neck.
REFERENCES:
patent: 3994323 (1976-11-01), Takahata et al.
patent: 4059135 (1977-11-01), Honsel
patent: 4062384 (1977-11-01), Frahm et al.
patent: 4441533 (1984-04-01), Snyder et al.
patent: 4630749 (1986-11-01), Armstrong et al.
Covert Charles H.
Fornuto Joseph
Giacomazzi Roy A.
Gifford William E.
Sherwood Carl H.
Chambers A. Michael
General Motors Corporation
Veenstra C. K.
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