Impact absorbing lock apparatus

Details Impact absorbing lock apparatus Impact absorbing lock apparatus

1975-08-07

1978-02-28

Moore, Richard E.

Closure fasteners

Keepers

29234117, E05C 2100

Patent

active

040762947

ABSTRACT:
An impact absorbing lock apparatus to prevent unauthorized entry through a door by kicking or ramming of the door comprises a mounting bracket attached to the door jamb of the door adjacent a latch bolt used to secure the door, a keeper for retaining the latch bolt and mounted for movement relative to the mounting bracket between a rest position contacting the mounting bracket and a displaced position, and a spring contacting the keeper and urging the keeper toward the rest position, the spring absorbing any impulse forces applied to the latch bolt and keeper and permitting keeper movement to displace the spring to absorb impulse forces and keep the lock apparatus from being torn from the door jamb. In one embodiment of the invention, the keeper is slidably mounted for movement toward and away from the mounting bracket. In a second embodiment the keeper is swingably mounted to the mounting bracket.

REFERENCES:
patent: 1663300 (1928-03-01), Halper
patent: 1676515 (1928-07-01), Anstey
patent: 2389056 (1945-11-01), Jamison, Jr.
patent: 2473205 (1949-06-01), Jazwieck
patent: 3338612 (1967-08-01), Howard

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