Lock-key system

Details Lock-key system Lock-key system

1984-11-05

1987-03-31

Wolfe, Robert L.

Locks

Operating mechanism

Key

70409, 70411, E05B 1904

Patent

active

046532986

ABSTRACT:
A key for a lock-key system, particularly for a hierarchal lock system, is provided which has an invariable basic profile and a variation or system profile in which the invariable basic profile is allocated to the region of the key facing carrying the classification notches and has at least two profiled formations which cross the centerline of the key. The variation or system profile is allocated to the key region adjacent to the key spine. Variations are provided in the system profile by longitudinal incisions having a rectangular cross-section.

REFERENCES:
patent: 4168617 (1979-09-01), Prunbauer
patent: 4320638 (1982-03-01), Dunphry
patent: 4325242 (1982-04-01), Tietz

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