Lock mechanism of the single cylinder deadbolt type

Details Lock mechanism of the single cylinder deadbolt type Lock mechanism of the single cylinder deadbolt type

1980-02-04

1982-03-30

Lyddane, William E.

Locks

Special application

For closures

70472, 292DIG27, E05B 6506

Patent

active

043218105

ABSTRACT:
A deadbolt lock mechanism of the single cylinder type is disclosed having a latch bolt which is movable between extended and retracted positions by a cylinder lock at one side thereof or by rotation of a thumbturn at the other side. With the latch bolt in the retracted position, the thumbturn is axially movable between operative and inoperative positions. In the operative axial position of the thumbturn, the thumbturn is operatively coupled to the latch bolt for operation thereof. In the inoperative axial position of the thumbturn, the thumbturn not only is operatively uncoupled from the latch bolt but also is prevented from rotation.

REFERENCES:
patent: 470474 (1892-03-01), Colley
patent: 2178666 (1939-11-01), Larson
patent: 4047408 (1977-09-01), Johns et al.

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