Receptacles – Container attachment or adjunct – Pressure relief means
Patent
1987-10-16
1989-03-07
Little, Willis
Receptacles
Container attachment or adjunct
Pressure relief means
220 85VR, 220 85VS, B65D 612
Patent
active
048098639
ABSTRACT:
A fill neck assembly of a vehicle fuel tank fill pipe incorporates in a single housing valving arrangements employed in an on board refueling vapor recovery system which prevents fuel vapor displaced from the fuel tank during a refueling operation from being discharged into the atmosphere. A fuel passage through the housing and connected to the fill pipe incorporates a nozzle seal near its inlet which will sealingly receive a standard fuel dispensing nozzle to enable fuel to be discharged from the nozzle into the fuel passage while preventing fuel vapor from being discharged from the fuel passage into the atmosphere. Vapor displaced from the tank by the incoming fuel passes from the tank through an outer hose loosely surrounding the fill pipe into a second passage through the housing having a vapor-liquid discriminator, a float valve and a vapor valve whose outlet is connected to a vapor receiving canister. In one embodiment, the vapor valve is opened in response to the insertion of the fuel dispensing nozzle into the nozzle seal, in a second embodiment the vapor valve is opened when the pressure of fuel vapor exceeds a set pressure. Emergency pressure relief valves are also incorporated in the housing.
REFERENCES:
patent: 4274549 (1981-06-01), Germain
patent: 4630749 (1986-12-01), Armstrong et al.
patent: 4714172 (1987-12-01), Morris
patent: 4719949 (1988-01-01), Mears
Ruhig, Jr. William E.
Woodcock William F.
Colt Industries Inc
Little Willis
Potoroka, Sr. Walter
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