Importance

Loading Importance Indicators...

Abstract

A resistant mechanical combination lock and improvements thereto are described herein to include one or more of the following features: an improved combination change/set feature that includes a tumbler interlocking lever with digitated micro-fingers suitable for interdigitating with digitated micro-fingers on the peripheral edge of a combination tumbler ring, the tumbler interlocking lever and the combination tumbler ring sandwiched between a pair of outer gate rings to form a tumbler wheel assembly; a key stabilization feature in which an internal boss and a pivot recess together help stabilize the change key when changing the combination of a lock to help prevent “lock out”; an improved duress feature that includes a duress tumbler wheel assembly (that includes a duress lever) and an interchangeable microswitch; and/or a fence control feature that preferably includes an overcenter spring and trigger plate for controlling fence contact with the drive cam.

Loading the Abstract Image...

First Claim