Manually or electrically driven lock

Details Manually or electrically driven lock Manually or electrically driven lock

1986-06-09

1988-05-24

Gall, Lloyd A.

Locks

Operating mechanism

Using a powered device

70380, E05B 1704, E05B 4700

Patent

active

047457856

ABSTRACT:
A safety lock cylinder is constructed so that a door can be opened or closed manually from one side, preferably the outside by inserting a key in a key guide and from the other side with a motor. The remote control of the lock can be prevented, if desired. By manually closing the door with the key in the key guide, the key and motor are releaseably coupled to the lock operating mechanism so that when the key is inserted the motor is decoupled from the mechanism, preventing danger to a person holding the key.

REFERENCES:
patent: 3854310 (1974-12-01), Paull et al.
patent: 3894417 (1975-07-01), Taniyama
patent: 4031729 (1977-06-01), Gretler
patent: 4593546 (1986-06-01), Allen

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