Vented fuel tank cap

Details Vented fuel tank cap Vented fuel tank cap

1979-03-01

1981-07-28

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

220204, 220210, F16K 17196

Patent

active

042805295

ABSTRACT:
A fuel tank cap for a motor vehicle includes a venting passage normally closed by a spring-biased valve adapted to vent the tank where the pressure in the tank exceeds the atmospheric pressure by more than a first given differential. The valve body is bored to receive a spring-biased ball valve acting in the opposite direction to allow the atmosphere to the tank when the atmospheric pressure exceeds the pressure in the tank by more than a second given differential.

REFERENCES:
patent: 1933454 (1933-10-01), Sidney
patent: 2133200 (1938-10-01), Kenneweg
patent: 2164450 (1939-07-01), Eshbaugh
patent: 3153423 (1964-10-01), Biello
patent: 3477458 (1969-11-01), Maddalozzo
patent: 3896845 (1975-07-01), Parker
patent: 4000828 (1977-01-01), Crute

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