Doorlock

Details Doorlock Doorlock

1983-10-20

1986-05-27

Dorner, Kenneth J.

Locks

Special application

For closures

70134, 70150, 70448, 70467, 70484, 70488, 70489, 70DIG20, E05B 6312

Patent

active

045907773

ABSTRACT:
A key operated doorlock, which may incorporate a deadbolt, has a bolt housing that is mounted on the exterior of the door and is held there by being fastened to a spacer disposed within the door and a mounting plate at the interior side of the door. The main bolt is locked in place with a secondary locking apparatus which may include a barrel lock which operates a bolt which cooperates with a keeper opening in still another bolt. The latter engages a keeper opening that forms part of the housing. A lever system is provided which permits operation of the third bolt when permitted by the state of the second mentioned bolt.

REFERENCES:
patent: 1554839 (1925-09-01), Brown
patent: 1580611 (1926-04-01), Kirkpatrick
patent: 1855089 (1932-04-01), Boothe
patent: 2136584 (1938-11-01), Benjamin
patent: 2638771 (1953-05-01), Comey et al.
patent: 3811302 (1974-05-01), Sorensen
patent: 4363227 (1982-12-01), Lo

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