Key for a cylinder lock and method for making same

Details Key for a cylinder lock and method for making same Key for a cylinder lock and method for making same

1978-03-02

1981-09-15

Wolfe, Robert L.

Locks

Operating mechanism

Key

70364A, 70406, E05B 2706

Patent

active

042890020

ABSTRACT:
Recesses in a key are formed by a cutter having a shape corresponding to the shape of the tumbler pin to be associated with the recess. The recesses to receive perpendicularly extending pins are formed with parallel opposed side walls perpendicular to the key surface to decrease the total space required for recesses of greatest step value. Recess for 45.degree. inclined permutations are formed with one flat wall. Methods and apparatus are disclosed.

REFERENCES:
patent: 3349587 (1967-10-01), Keller
patent: 3393542 (1968-07-01), Crepinsek
patent: 3412588 (1968-11-01), Schwegler
patent: 3413831 (1968-12-01), Crepinsek
patent: 3605462 (1971-09-01), Hermann
patent: 3877267 (1975-04-01), Harris
patent: 3889501 (1975-06-01), Fort
The History of Locks.
Publication of Hurd Lock Co.

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