Fuel dispenser

Details Fuel dispenser Fuel dispenser

1995-06-05

1997-03-11

Jacyna, J. Casimer

Fluent material handling, with receiver or receiver coacting mea

Automatic control of flow cutoff or diversion

Level or overflow responsive

141207, 141 94, 141389, 141352, 141198, B67D 500

Patent

active

056091923

ABSTRACT:
A fuel dispensing nozzle and a method utilizing that dispensing nozzle, are provided, the method comprising the steps of: providing a sealing means effective to mate in a sealing relationship with a fuel tank inlet, the sealing means comprising a boot having an elastomeric sealing surface, a source of pressurized gas, a channel providing communication from the source of pressurized gas to outside of the boot wherein pressure on the elastomeric sealing surface restricts flow through the channel, and a means to block fuel flow through the fuel dispensing nozzle when a threshold pressure or greater exists at the source of gas supply, the threshold pressure indicative of a sealing relationship between the sealing surface of the boot and a fuel tank inlet; mating the sealing surface to the fuel tank inlet; and passing fuel into the fuel tank only when the pressure within the gas supply conduit exceeds the threshold pressure.

REFERENCES:
patent: 3580414 (1971-05-01), Ginsburgh et al.
patent: 3783913 (1974-01-01), Trusselle
patent: 3881528 (1975-05-01), Mackenzie
patent: 5121777 (1992-06-01), Leininger et al.
patent: 5131441 (1992-07-01), Simpson et al.
patent: 5341859 (1994-08-01), Howseman, Jr.

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