Rotary disc-tumbler lock cylinder

Details Rotary disc-tumbler lock cylinder Rotary disc-tumbler lock cylinder

1978-01-23

1980-04-01

Wolfe, Robert L.

Locks

Operating mechanism

Key

70367, 70371, 70372, E05B 2700

Patent

active

041955030

ABSTRACT:
A lock cylinder incorporating a front retainer for a sidebar and a body counterbore to receive same, a core shell having a torquing engagement extension and an indexing protrusion to properly index the insertion and removal of the core, a torquing tumbler for applying rotational torque to the core, an improved centering spring, an inter-connection of a sidebar and a body engaging link of a removable core differential mechanism, a method of yieldingly biasing the engaging links outwardly from the core assembly, and improved combinating capabilities by arrangements of gatings in the rotary disc-tumblers for variable incrementations and the arrangement of tumblers and spacers of various thicknesses to achieve a variable spacings of the bittings.

REFERENCES:
patent: 3399555 (1968-09-01), Gray
patent: 3789638 (1974-02-01), Roberts
patent: 3848442 (1974-11-01), Mertanen

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