Electric security lock

Details Electric security lock Electric security lock

1976-01-26

1978-04-04

Frazier, Roy D.

Locks

Special application

For closures

70129, 292 21, 292 92, 292140, E05B 6510

Patent

active

040819809

ABSTRACT:
The present invention is an electric security lock which not only provides an alarm signal to an alarm device, but which also has a push bar emergency release. The electric security lock includes a dead bolt, a frame adapted to slideably receive the dead bolt, a cover plate coupled to the frame for holding the dead bolt in place, a pair of cams coupled to the dead bolt and adapted to move the dead bolt in a lateral direction, a locking cylinder coupled to each of the cams, and an electric activating apparatus coupled to the dead bolt. The electric activating apparatus includes a circular latch member pivotally mounted and spring coupled to the dead bolt, a metal bar with a first end and a second end having a square hole disposed midway between the first and second holes, the first end of the metal bar is adapted to be coupled and uncoupled mechanically to the circular latch member, and a micro electronic switch mechanically coupled to the square hole of the bar and electrically coupled to an alarm device. The electric security lock also includes an emergency release mechanism which activates the circular latch member and which has a device for retracting the dead bolt from its projected position and a device for deactivating the electric activating apparatus when an appropriate key is used, mechanically coupled to the retracting device.

REFERENCES:
patent: 213064 (1879-03-01), Pond
patent: 986816 (1911-03-01), Girrens
patent: 1068738 (1913-07-01), Clark et al.
patent: 1093809 (1914-04-01), Voight
patent: 2818475 (1957-12-01), Harry
patent: 2958215 (1960-11-01), Heyman
patent: 3097007 (1963-07-01), Eichacker et al.
patent: 3271982 (1966-09-01), Welch
patent: 3432631 (1969-03-01), Deutscher et al.
patent: 3435643 (1969-04-01), Pollak et al.
patent: 3477260 (1969-11-01), Balducci et al.

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