Electromagnetic valve security device for fuel supplies

Details Electromagnetic valve security device for fuel supplies Electromagnetic valve security device for fuel supplies

1978-11-13

1981-04-21

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

With second control

137 784, 13762412, 251129, 251137, 361154, 361194, F16K 1736

Patent

active

042626870

ABSTRACT:
An electromagnetic valve circuit used in a fluid line security device is disclosed. The circuit is adapted to open and close a fuel supply pipe. The circuit includes an attracting circuit and a holding circuit connected to one side of a power source. The attracting circuit including an attracting switch is in parallel with the attraction holding circuit. The attracting switch is closed only when the attraction phase of value opening is to be accomplished. In one modification the series circuit of the attracting switch and the electromagnetic valve circuit is coupled in parallel to a circuit formed by a hazard detecting switch, and a relay switch operating coil. In another modification a time limit current control is connected in series with the valve coil to control the supply of current to the coil for a predetermined time limit.

REFERENCES:
patent: 1325048 (1919-12-01), Simon
patent: 2611643 (1952-09-01), Higgins
patent: 2648034 (1953-08-01), Douglas
patent: 2718951 (1955-09-01), Mason
patent: 3080508 (1963-03-01), Hipple
patent: 3524471 (1970-08-01), Bresser
patent: 3625476 (1971-12-01), Meir
patent: 3906294 (1975-09-01), Lourigan
patent: 4065096 (1977-12-01), Frantz
patent: 4078709 (1978-03-01), Jenkins
patent: 4098284 (1978-07-01), Yamada

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