Patents by Inventor Herbert Hofinger

Herbert Hofinger 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).

  • Safety switching means for controlling a current consumer
    Patent number: 4859869
    Abstract: The safety switching means comprises a source of radiation (21) which is switched on and off periodically. Only in the event that radiation (22) was detected by the detector (6) when the source of radiation (21) is switched on, it will be checked--with the source of radiation (5) switched off--whether the detector (6) is applied by radiation (22) nonetheless, and, in the event of no radiation being found by the detector (6), the current consumer will be switched on automatically by the switching means, since it is certain that the hand of a user covers the window (4).
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: August 22, 1989
    Assignee: Braun Aktiengesellschaft
    Inventors: Lothar Heuwinkel, Herbert Hofinger