Patents by Inventor Martin Apschner

Martin Apschner 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).

  • System with a lock and a key which cooperate according to the transponder principle, as well as a key and a lock for such a system
    Patent number: 6150952
    Abstract: A key and lock system has a key with an integrated transponder coil that is connected to a transponder unit, and a lock with an integrated write/read coil. The key has a key bit portion and a bow portion. When the key bit portion is inserted into an elongated aperture of a key cylinder of the lock, an axis of the write/read coil forms an acute angle with an axis of the transponder coil. The acute angle substantially differs from a zero degree angle.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: November 21, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Peter Priller, Martin Apschner, Werner Wiespointner, Heinz Kwas, Peter Schmallegger, Christian Schwar
  • Access control system for controlling the access to at least one space, and product including an access control system
    Patent number: 6147621
    Abstract: In an access control system (8)--which comprises a transponder communication device (9) and at least two transmission coils (11, 12) connected to the transponder communication device (9), for receiving transponder signals, of which a first transmission coil (11) is associated with a first door (2), and which comprises a first activation device (18 associated with the first transmission coil (11) and the first door (12), and which comprises a first door opener (23) for the first door (2) and a logic device (45) for activating the first door opener (23)--the two transmission coils (11, 12) have arbitrarily large receiving ranges and the first transmission coil (11) and at least one further transmission coil (12) are followed by amplitude detector (34, 36) by which the amplitudes of the transponder signals supplied by the two transmission coils (11, 12) can be detected and the logic device is arranged after the amplitude detector (34, 36) and adapted to detect a condition in which the amplitude of the transponde
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: November 14, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Martin Apschner, Thomas Rudolph, Bernhard Spiess