Key operated lock mechanism with mixed mechanical and electric c

Details Key operated lock mechanism with mixed mechanical and electric c Key operated lock mechanism with mixed mechanical and electric c

1985-04-30

1987-03-10

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

70255, G01D 534

Patent

active

046492720

ABSTRACT:
A lock with mixed mechanical and electrical control which utilizes a key device which includes mechanical notching for cooperatively engaging pistons carried within the lock stator and rotor and which also includes a signal emitter which is selectively alignable with a signal receiver which activates an electro-mechanical drive which is operatively connected to control the locking and unlocking of the lock bolt when the key device is at a position of the rotor which is different from the position at which the key device is introduced into the rotor.

REFERENCES:
patent: 3887029 (1975-06-01), Lipschutz et al.

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