Cylinder lock and key set with reversible key

Details Cylinder lock and key set with reversible key Cylinder lock and key set with reversible key

1992-07-06

1993-11-30

Gall, Lloyd A.

Locks

Operating mechanism

Key

70375, 70377, 70406, 70409, E05B 2904

Patent

active

052654559

ABSTRACT:
A reversible double-bitted key is reconfigured to permit a cylinder lock and key set to fit in the standard architecture of certain American automobiles. Preferably, the maximum required diameter of the cylinder is maintained under 13 millimeters, permitting the cylinder to be placed in standard instrument panel architecture for many American made vehicles. The minimum width of the key is maintained at approximately 4 millimeters, assuring that the key can withstand the torque requirements of the lock systems. This permits a single key to be used in both the primary and secondary locks. The tumbler is configured such that the minimum distance between the outer edge of the key window in the tumbler and the outer perimeter of the tumbler is greater than the thickness of the tumbler, further assuring that the lock can withstand repeated use without fatigue failure.

REFERENCES:
patent: 3367156 (1968-02-01), Johnstone
patent: 3969915 (1976-07-01), Droske
patent: 4357815 (1982-11-01), Kleefeldt et al.
patent: 5134871 (1992-08-01), Makino et al.

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