Fail-secure and fail-safe door lock mechanism

Details Fail-secure and fail-safe door lock mechanism Fail-secure and fail-safe door lock mechanism

1984-03-14

1986-04-01

Moore, Richard E.

Closure fasteners

Bolts

Sliding

292244, 292170, 292182, 292 69, E05C 106

Patent

active

045793760

ABSTRACT:
An electrical door lock device for alternate fail-secure and fail-safe operation comprising an elongated housing for mounting in a door or frame member, a bolt slidably mounted in the housing for movement between a first position and a second position with the first position being a projected locking position and the second position being a retracted nonlocking position, an actuator plate for driving the bolt between the first and second positions with the plate being movably mounted within the housing for movement between first and second positions and operationally connected to the bolt for driving the bolt to one of the first and second positions upon movement of the plate from the first position to the second position and for driving the bolt to the other of the first and second positions upon movement of the plate from the second position to the first position, a solenoid assembly for electrically actuating the plate from the first position to the second position, and a spring for normally biasing the plate toward the first position.

REFERENCES:
patent: 1434373 (1922-11-01), Crompton et al.
patent: 1462805 (1923-07-01), Gibson
patent: 1952393 (1934-03-01), Tigue
patent: 3360970 (1968-01-01), Hays, Jr.
patent: 3751086 (1973-08-01), Geringer
patent: 3828592 (1974-08-01), Horgan, Jr.
patent: 3893723 (1975-07-01), Boule
patent: 4099752 (1978-07-01), Geringer

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