Comment: Door anti-hijacking latch/lock mechanism

(See in situ)


Door anti-hijacking latch/lock mechanism

with pneumatic decompression.

An aircraft door having an electrically operated latching device (601) engaged only when electrical power is applied. Latch logic permits release by actuation of a switch (603) on the pilot's panel, by loss of electrical power (602), by a knob on the control cabin side (605) OR by a key from outside the control cabin (604). The aircraft door controlled by the electrically operated latching device (601) further includes a decompression override mechanism (606).

Filed by Boeing, 1984; acquired from US Patent Office 1987

http://www.freepatentsonline.com/4681286.html