Shock-actuated lock with resettable ball

Details Shock-actuated lock with resettable ball Shock-actuated lock with resettable ball

1991-11-05

1992-10-06

Nicholson, Eric K.

Closure fasteners

Ball

292DIG65, 292DIG22, E05C 1904

Patent

active

051525623

ABSTRACT:
A shock-activated lock for attachment to a cabinet that prevents the cabinet door from opening in the event of an earthquake. The lock includes a slotted engaging member attached to the cabinet door, and a lock housing attached to the cabinet frame that contains a ball that normally rests on a raised shelf. The engaging member extends into the housing when the door is closed. In the event of an earthquake, the ball falls into the slot in the engaging member, preventing the engaging member from withdrawing from the housing, thus preventing the cabinet door from opening.

REFERENCES:
patent: 2215044 (1940-09-01), Kammerdiner
patent: 2585316 (1952-02-01), Hobson
patent: 2659228 (1953-11-01), Ducharme
patent: 2693615 (1954-11-01), Hatke
patent: 3799596 (1974-03-01), Nozomu et al.
patent: 3828899 (1974-08-01), Scott
patent: 4536021 (1985-08-01), Mochida
patent: 4552399 (1985-11-01), Atarashi
patent: 4652029 (1987-03-01), Yamamoto
patent: 4714286 (1987-12-01), Yamamoto
patent: 4865368 (1989-09-01), McCall et al.
patent: 4906044 (1990-03-01), Wilstermann
patent: 4988134 (1991-01-01), Vidwans et al.
patent: 5035451 (1991-07-01), Brady
Popular Science Article, "Wizard's Boxes", pp. 188-191, Mar. 1953.

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