Locks – Operating mechanism – Key
Patent
1984-06-25
1986-09-02
Wolfe, Robert L.
Locks
Operating mechanism
Key
70364A, 70378, 70409, 70419, E05B 2706
Patent
active
046088423
ABSTRACT:
A lock and key system is provided wherein the flat sides of the keys are equipped with locking ribs projecting beyond the normal profile and provided with indentations (depressions) over their course, i.e., are equipped with height-modulated locking ribs. In order to achieve an additional scope of variation which adds to the variations presently available in locked key systems, based on locks having identical bore patterns, the auxiliary locking ribs of the keys of the individual locks are provided with a differing distribution of elevations and depressions and, interacting with these locking rib designs are a number of species of sensing pins. A first species of pins serve to sense elevations, a second species of pins serve to sense depressions and a third species of pins is provided at those locations of the locks at which the individual key comprises an elevation, but the superordinated or master key for the actuation of locks combined into a system comprises a rib depression at the same location.
REFERENCES:
patent: 3348392 (1967-10-01), Schreiber
patent: 3742744 (1973-07-01), Lumme
Wolfe Robert L.
Zeiss Ikon AG
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