Fluent material handling – with receiver or receiver coacting mea – Automatic control of flow cutoff or diversion – Level or overflow responsive
Patent
1976-07-01
1978-12-19
Aegerter, Richard E.
Fluent material handling, with receiver or receiver coacting mea
Automatic control of flow cutoff or diversion
Level or overflow responsive
141301, B65B 318, B65B 3106
Patent
active
041301480
ABSTRACT:
A gasoline dispensing nozzle for discharging gasoline into receiving vessels and for removing vapors therefrom through a vapor removal line is provided with an automatic shut-off device that terminates the delivery of gasoline in the event liquid gasoline flows into said vapor removal line. The shut-off device comprises a sensing orifice disposed at the end of a flexibly mounted tube within said vapor removal line, which tube leads to a passageway extending into the housing of said gasoline nozzle and terminating in a chamber that contains a conventional, diaphragm-operated, trigger mechanism for closing the main nozzle valve. In operation, no matter which way the nozzle is inserted into a gasoline tank fill pipe, the sensing orifice, by gravity, will fall into a position such that, if gasoline flows into said vapor removal line, it must also flood the sensing orifice. When gasoline enters the sensing orifice, the diaphragm-operated trigger mechanism, responding to a suction created by the flow of gasoline through a conventional venturi within the nozzle housing, releases the spring-to-close main nozzle valve.
REFERENCES:
patent: 2996979 (1976-12-01), Barr et al.
patent: 3946773 (1976-03-01), Hansel
Aegerter Richard E.
Hartman Richard C.
Henderson Lannas S.
Schmidt Frederick R.
Union Oil Company of California
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