Patents by Inventor Karl Hurtig

Karl Hurtig 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).

  • Switching apparatus for changing the absolute value and the permanent magnetization direction of ferromagnetic bodies, e.g. of permanent magnets
    Patent number: 4497011
    Abstract: A switching unit (1) for changing the polarity or the magnetic field-strength of ferromagnetic bodies, for example of permanent-magnet clamping devices, possesses a series-arrangement comprising at least one coil (3) which is suitable for receiving ferromagnetic bodies (6), a controllable electronic switch, and an energy-storage system (10). The object is to provide a compact switching unit which switches reliably and which possesses a simple electrical circuit. This object is achieved by means of a switching unit which comprises an electronic switch, in the form of a flashlamp (2).
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: January 29, 1985
    Inventor: Karl Hurtig