Patents by Inventor Dietmar Engelhardt

Dietmar Engelhardt 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: 4693430
    Abstract: A winding station of an automatic winding machine, includes a holder, a movable mounting mandrel supported by the holder for receiving a tube of a feeding bobbin, a bobbin delivery slide for feeding a bobbin to the mounting mandrel, an unwinding accelerator for accelerating unwinding of a thread from the bobbin, and a captively controllable displacement apparatus associated with the holder for at least approximately parallel displacement of the mounting mandrel between a tube mounting position below the bobbin delivery slide and an unwinding position below the unwinding accelerator.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: September 15, 1987
    Assignee: W. Schlafhorst & Co.
    Inventors: Dietmar Engelhardt, Hans Grecksch
  • Patent number: 3973742
    Abstract: Self-centering holder for hollow textile coils of varied lengths and diameters includes at least two rod-shaped substantially parallel-extending centering and clamping members, and means includes support and adjusting members for the centering and clamping members, the at least two centering and clamping members being mounted on the support and adjusting members and being respectively pivotable into a position wherein a hollow textile coil of given diameter is receivable over the centering and clamping members collectively and wherein the latter are in pressing engagement with the inner surface of the hollow textile coil, the support and adjusting members being located outside the hollow textile coil when the latter is received on the centering and clamping members.
    Type: Grant
    Filed: January 8, 1975
    Date of Patent: August 10, 1976
    Assignee: W. Schlafhorst & Co.
    Inventors: Dietmar Engelhardt, Hans Raasch