Pin tumbler lock

Details Pin tumbler lock Pin tumbler lock

1979-05-09

1980-11-25

Wolfe, Robert L.

Locks

Operating mechanism

Key

70378, E05B 2704

Patent

active

042350867

ABSTRACT:
A tumbler lock including a housing that defines a keyway and a plurality of tumblerways communicating therewith. Disposed for both reciprocating and rotational movement in each of the tumblerways is a pin tumbler movable from locked positions into at least one shear position comprising predetermined longitudinal and angular positions. A release mechanism is movable from a closed position into an open position with all the tumblers in their shear positions and is restrained in its closed position with any of the tumblers in one of its locked positions. Cooperating with the lock is a key having a plurality of alignment ridges, each one adapted to enter an alignment groove on one of the pins and to move the pin into its shear position.

REFERENCES:
patent: 1438336 (1922-12-01), Schroeder
patent: 3499302 (1970-03-01), Spain
patent: 4103526 (1978-08-01), Surko

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