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:
Feb. 18, 1992
Filed:
Jul. 29, 1988
Applicant:
Inventor:
Thorstein Tonnesson, Moss, NO;
Assignee:
Trioving A.S., Moss, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ;
U.S. Cl.
CPC ...
2353825 ; 235382 ; 34082531 ;
Abstract
The present invention relates to an individual electronic locking unit of the type which is re-coded to the code associated with a new key means and at the same time makes the previously used code invalid by the introduction of a new key means having a new code. For the purpose of obtaining a favorable solution including simplified data communication, it is according to the invention suggested that the locking unit is adapted to accept key means from a number (N) of mutually independent code sequences (C), only one key means from one of said code sequences (N.multidot.C) being valid at a time.