Fail-secure and fail-safe door lock mechanism
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United States of America Patent
Stats
-
Apr 1, 1986
Grant Date -
N/A
app pub date -
Mar 14, 1984
filing date -
Mar 14, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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