Patents by Inventor Heinz Dettwiler

Heinz Dettwiler 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: 6471035
    Abstract: A multi-stage forming machine with a final forming station for dividing combined parts into in each case two product parts (21, 22) has two product-part discharge devices (3, 4). Assigned to the two product-part discharge devices (3, 4) there is in each case a transfer device (6) for transferring a product part (21, 22) from the final forming station to the product-part discharge device (3, 4). The one transfer device comprises transfer tongs with an upper gripper with two gripping jaws (521, 522) and a lower gripper with one gripping jaw (531). The other transfer device (6) comprises a slideway (61) for receiving a product part (22) from the final forming station and also a kick lever (62) arranged such that it can swivel for pushing a product part (22) located on the slideway (61) to the product-part discharge device (4).
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: October 29, 2002
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Daniel Ruchti, Ulrich Fluri, Heinz Dettwiler
  • Patent number: 5156073
    Abstract: A method and apparatus achieve the intermittent feeding of raw material into a shearing station by exerting a drive torque on draw-in rollers in order to effect their rotation in one arcuate direction and hence the movement of the raw material toward the shearing station. A counteracting torque, which is less than the drive torque, is continuously exerted on the draw-in rollers. Thus, during intervals following a shearing operation when the drive torque is terminated, the counteracting torque functions to reverse the rotation of the draw-in rollers and hence retract the sheared end of the raw material away from the shearing station.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: October 20, 1992
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Hermann Zanzerl, Heinz Dettwiler