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:
Nov. 09, 1993
Filed:
Oct. 24, 1991
Applicant:
Inventors:
Tore Wiik, Oslo, NO;
Arild Pettersen, Moss, NO;
Halvor Aase, Moss, NO;
Torstein Tonnesson, Moss, NO;
Assignee:
Trioving a.s, , NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G07C / ; E05B / ; G06K / ;
U.S. Cl.
CPC ...
235382 ; 2353825 ; 34082531 ;
Abstract
A lock system, comprising at least one off-line lock and at least one key, e.g. as a key card with encoded data, said lock including an electro/mechanical locking mechanism which can be affected by the key, and a key reader enabled to read the encoded data on the key, memorize said data and compare these data with data stored in the key reader for the purpose of, depending of certain comparable data, affecting the locking mechanism. The data used in the system comprise user identification, lock identification, valid time window and also override criteria e.g. time related criteria for invalidating prior used keys.