Electric lock with specially shaped keeper, particularly for the

Details Electric lock with specially shaped keeper, particularly for the Electric lock with specially shaped keeper, particularly for the

1986-07-10

1987-11-03

Wolfe, Robert L.

Locks

Operating mechanism

Using a powered device

292144, E05B 4700

Patent

active

047036370

ABSTRACT:
An electric lock comprises a bolt that is movable into and out of a specially-shaped keeper. The bolt is displaced relative to a casing by a motor that is in turn slidably mounted within the casing. During normal use, the motor is fixed relative to the casing by an electromagnetic, and urged away from the electromagnet by a spring that is weaker than the electromagnet. When the power supply to the lock is intentionally or unintentionally cut off, the spring thus urges the motor, and with it the bolt, away from the electromagnet, thereby automatically opening the lock.

REFERENCES:
patent: 414495 (1889-11-01), Conn
patent: 1486595 (1924-03-01), Maruum
patent: 3636745 (1972-01-01), Green

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