Dual independent input hydraulic shutoff

Details Dual independent input hydraulic shutoff Dual independent input hydraulic shutoff

1990-08-27

1992-05-19

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

60 39281, 123198DB, 251 29, F16K 31124, F02C 7232, F02C 926

Patent

active

051141159

ABSTRACT:
In a fuel management system, shutoff means in a fuel supply line (12) closes when the pressure at a port (28) on the shutoff means exceeds some predetermined level. A most selector valve (42) attached to the port (28) connects to two electrically and mechanically independent shutdown valves (50, 52). Actuating either valve (50, 52) pressurizes the port (28), closing the shutoff means and stopping all flow through the supply line (12).

REFERENCES:
patent: 3533434 (1970-10-01), Smith
patent: 3613375 (1971-10-01), Abild
patent: 3862738 (1975-01-01), Stumpmeier
patent: 4010606 (1977-03-01), Hansen
patent: 4229937 (1980-10-01), Smith
patent: 4300347 (1981-11-01), Smith
patent: 4449359 (1984-05-01), Cole et al.
patent: 4493187 (1985-01-01), Hansen
patent: 4602479 (1986-07-01), Hansen
patent: 4926815 (1990-05-01), Cowley

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