John G Thacker

US Patent:

56368801, Jun 10, 1997

Filed:

Oct 11, 1995

Appl. No.:

8/541059

Inventors:

Edward J. Miller - Falls Church VA
John G. Thacker - Charlottesville VA

Assignee:

Milocon Corporation - Falls Church VA

International Classification:

E05C 106

US Classification:

292144

Abstract:

An electronic lock mechanism includes a solenoid driven actuator and a cam actuator ring. The cam ring interfaces with both the latch of a door lock and the door lock key cylinder. With this interfacing, the door latch can be independently operated by one of the key cylinder, the cam actuator ring or a door lock push bar or paddle. With this independent operation, the ability to open a door can be maintained during power or lock mechanism failures for purpose of egress from the area secured by the door lock.