Lock mechanism

Details Lock mechanism Lock mechanism

1978-02-10

1980-12-09

Dorner, Kenneth

Locks

Special application

For closures

70432, 292223, E05B 5700, E05C 316

Patent

active

042377110

ABSTRACT:
There is disclosed a lock mechanism that has been designed to take up a minimum amount of space and thus be accommodatable in a relatively shallow structure. Said lock mechanism includes a pivotally mounted latch bolt, a deadlock member associated with said latch bolt, with biasing means urging said deadlock member to a locking position. To control the operation of the deadlock member there is provided a deadlock trigger and a deadlock position lever providing an operational connection between said trigger and the deadlock member. A primary operating lever as provided comprised of a first pivotally mounted arm portion and a second arm portion integral therewith and connected with the latch bolt by a loss motion connection. The pivot axis for said latch bolt, said primary operating lever and said deadlock member are disposed parallel to and adjacent the front plate of the casing structure, thereby enabling the lock mechanism to be accommodated and to function within a shallow casing structure.

REFERENCES:
patent: 563867 (1896-07-01), Moser
patent: 698812 (1902-04-01), Carleton
patent: 1128392 (1915-02-01), Van Winkle
patent: 1195713 (1916-08-01), Page
patent: 1611838 (1926-12-01), Malicki
patent: 3390908 (1968-07-01), Schlage
patent: 3810145 (1974-05-01), Gusaras

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