The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 1986
Filed:
Jun. 25, 1984
Werner Tietz, Berlin, DE;
Zeiss Ikon AG, , DE;
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.