Torque limiting lock mechanism

Details Torque limiting lock mechanism Torque limiting lock mechanism

1996-11-18

1998-08-04

Dino, Suzanne

Locks

Operating mechanism

Key

70222, 2923363, 292348, E05B 1516

Patent

active

057877432

ABSTRACT:
The apparatus is a torque limiting spindle for lock mechanisms. The interconnection between two parts of the spindle of the lock is a detent mechanism which disengages the two sections if excessive torque is applied. The apparatus has a first section of the spindle with grooves on a cylindrical surface and dowel pins held into the grooves by one or more springs. The second section of the spindle has fingers which engage the dowel pins to impart rotational motion to the first spindle section. If the torque applied between the two sections exceeds the limit determined by the springs, the dowel pins move out of the grooves to prevent damage to the mechanism.

REFERENCES:
patent: 4679420 (1987-07-01), Yang
patent: 4773240 (1988-09-01), Foshee
patent: 4941697 (1990-07-01), Fan
patent: 5010755 (1991-04-01), Best
patent: 5040652 (1991-08-01), Fish et al.
patent: 5390517 (1995-02-01), Yamada
patent: 5516161 (1996-05-01), Mader et al.
patent: 5520427 (1996-05-01), Mader et al.

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