Patents by Inventor Torstein Tonnesson

Torstein Tonnesson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Time controlled lock system
    Patent number: 5260551
    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.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: November 9, 1993
    Assignee: Trioving a.s
    Inventors: Tore Wiik, Arild Pettersen, Halvor Aase, Torstein Tonnesson
  • Time controlled lock system
    Patent number: RE36426
    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.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: December 7, 1999
    Assignee: TrioVing a.s
    Inventors: Tore Wiik, Arild Pettersen, Malyor Aase, Torstein Tonnesson