Cylinder lock with key responsive removable core

Details Cylinder lock with key responsive removable core Cylinder lock with key responsive removable core

1978-05-01

1980-03-04

Wolfe, Robert L.

Locks

Operating mechanism

Key

E05B 2700

Patent

active

041910370

ABSTRACT:
A cylinder lock with a hollow cylindrical shell that defines a plurality of shell tumblerways and is longitudinally movable in a shell cavity defined by a housing. Received by the hollow shell is a plug that defines a keyway for receiving a proper key and a plurality of plug tumblerways aligned with the shell tumblerways. The plug is rotatable within the shell but is longitudinally restrained therein. A plurality of locking tumblers are accommodated by the aligned shell and plug tumblerways and are movable from biased locked positions into open positions by a proper key in the keyway. Also responsive to a proper key is a control tumbler that can be moved out of a biased, latched position into a release position. The control tumbler obstructs longitudinal withdrawal of the shell from the shell cavity when in its latched position and permits withdrawal when in its release position.

REFERENCES:
patent: 1986676 (1935-01-01), Hurd

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