Locking mechanism

Details Locking mechanism Locking mechanism

1996-02-20

1998-11-10

Gall, Lloyd A.

Locks

Special application

For control and machine elements

70467, 70422, 70DIG42, 292DIG62, E05B 1300

Patent

active

058327584

ABSTRACT:
A locking mechanism for security door assemblies, in particular but not exclusively, to a security door assembly which is fitted temporarily on a building. The locking mechanism for such a security door comprises a locking member movable between a locking state and non-locking state. A lock releasably engagable with the locking member prevents the locking member moving to the non-locking state. The lock mechanism further includes an operating device that is coupled to the locking member by a connecting structure which includes a force limiter. The force limiter limits the force the operating device can apply to the locking member without damage to any of the parts of the locking mechanism.

REFERENCES:
patent: 2063708 (1936-12-01), Swilens
patent: 2787154 (1957-04-01), Wesberry
patent: 3431754 (1969-03-01), Brumelle
patent: 4191438 (1980-03-01), Day
patent: 4457148 (1984-07-01), Johansson et al.
patent: 4478444 (1984-10-01), Kurz et al.
patent: 4534192 (1985-08-01), Harshburger et al.

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