Emergency fuel flow shut-off device

Details Emergency fuel flow shut-off device Emergency fuel flow shut-off device

1982-11-18

1985-02-12

Rolla, Joseph J.

Dispensing

Automatic control

222541, 137 68R, 13735516, B67D 532

Patent

active

044986068

ABSTRACT:
A device for use in automatically shutting off the flow of fuel from a dispenser is disclosed. The device comprises a servo valve connected to a fuel delivery hose through a conduit having a weakened wall section adjacent the valve. Power is supplied to the valve through a switch having an actuator which laterally engages the conduit to hold the switch normally closed for maintaining the control valve normally open. In response to pulling of the hose away from the dispenser, the valve actuator moves and opens the switch for deenergizing the control valve and thereby shutting off fuel to the delivery hose.

REFERENCES:
patent: 1857969 (1932-05-01), Nelson
patent: 1864233 (1932-06-01), De Lancey
patent: 2070560 (1937-02-01), Bradley
patent: 2211476 (1940-08-01), Nelson
patent: 2840272 (1958-06-01), Blackburn et al.
patent: 2880909 (1959-04-01), Clymer et al.
patent: 2906280 (1959-09-01), Mount
patent: 3509942 (1970-05-01), Lindberg
patent: 3878507 (1975-04-01), Medlock
patent: 3893095 (1975-07-01), De Jong
patent: 4180088 (1979-12-01), Mallett

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