Locks – Operating mechanism – Combination
Patent
1983-05-19
1985-08-06
Smith, Gary L.
Locks
Operating mechanism
Combination
70 15, 70322, 70303R, E05B 1516, E05B 6300
Patent
active
045327858
ABSTRACT:
An improved lock assembly having a plurality of peripherally gated tumbler wheels supported within a housing for rotation about a common axis. A peripherally gated control cam is mounted to the tumbler wheel axis to provide cam operated movement of a fence lever and rotatably attached lock bolt between extended and retracted positions when the peripheral tumbler wheel gates are aligned. A single spring is provided for serving the dual purpose of biasing the fence lever towards the control cam and securing the fence lever to the bolt. Further, precise positioning of the lock bolt and lever when the lock bolt is moved to its extended position are provided by a three point positioning configuration in which special surfaces on the lever are moved into abutment with the lock housing. A new relock spring configuration and system is provided for preventing retraction of the lock bolt when the housing backplate is removed.
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Dubnicka Thomas J.
La Gard, Inc.
Smith Gary L.
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