Patents by Inventor Olaf Andreas

Olaf Andreas 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).

  • Electrical switch
    Patent number: 5994896
    Abstract: A switch lever of an electrical switch can be moved into various switch positions. A ferrite core is disposed at the switch end of the switch lever. A primary coil and a secondary coil are disposed about each switch setting. The primary coil induces a voltage in each secondary coil. The amplitude of the induced voltage is greatest in the secondary coil in the vicinity of which the ferrite core is situated. The actually adopted switch position can be determined from the difference in the voltages.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: November 30, 1999
    Inventors: Olaf Andreas, Manfred Glehr