Patents by Inventor Gerhard Heyduk

Gerhard Heyduk 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).

  • Patent number: 4117293
    Abstract: An inductive heating apparatus for forging ingots which are pushed in a row through the apparatus for thoroughly heating them and subsequent transport includes a friction disc type of drive engaging the ingots as they enter the inlet end of the heating apparatus. A thyristor-controlled d.c. shunt motor is used as the drive for the friction discs and the speed of this motor is controlled by a regulating device which is programmed for alternate low and high speeds, the low speed matching the required staying time of each ingot in the inductor heater necessary to thoroughly heat the same, and the high speed being used to effect a fast discharge of the heated ingot from the apparatus.
    Type: Grant
    Filed: April 27, 1977
    Date of Patent: September 26, 1978
    Assignee: BBC Brown, Boveri & Company Limited
    Inventors: Helmut Wicker, Werner Kielhorn, Gerhard Heyduk
  • Patent number: 4090058
    Abstract: In apparatus for resistance-heating elongated workpieces by direct passage of current therethrough, a device for displacing the elongated workpieces longitudinally into and out of the apparatus includes rail means providing a transporting surface into and out of the apparatus, electrode carriers having rollers rollably supporting the electrode carriers on the rail means, and drive means for driving the electrode carriers along the rail means in axial direction of a respective workpiece.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: May 16, 1978
    Assignee: Brown, Boveri & Cie Aktiengesellschaft
    Inventors: Werner Kielhorn, Gerhard Heyduk, Otto Hochstrasser