Simultaneous state prevention system

Details Simultaneous state prevention system Simultaneous state prevention system

1977-06-13

1979-08-21

Yuen, Henry C.

B64D 1300

Patent

active

041648943

ABSTRACT:
A cabin pressure control system uses two identical controllers which serve, on alternate flights, as primary controller while the other serves as standby. Identical circuitry on the units cooperate if both controllers attempt to control cabin pressure together, or if neither assumes control, to place one of the units in control of cabin pressure.

REFERENCES:
patent: 2851254 (1958-09-01), Messinger et al.
patent: 2966109 (1960-12-01), Best
patent: 3192848 (1965-07-01), Townsend
patent: 3215057 (1965-11-01), Turek
patent: 3461790 (1969-08-01), Kinsell et al.
patent: 3473460 (1969-10-01), Emmons
patent: 3711044 (1973-01-01), Matulich

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