Time controlled lock system

US5260551A · kind A · utility

Assignee

• TrioVing AS · NO

Inventors

• Tore H. Wiik · Moss, NO
• Arild Pettersen · Moss, NO
• Halvor Aase · Moss, NO
• Torstein Tonnesson · Moss, NO

Key dates

• Filing date: Oct 24, 1991
• Grant date: Nov 9, 1993
• Expiry date: Oct 24, 2011

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C2009/00849
• WIPO field: Control
• WIPO sector: Instruments

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.