Patents by Inventor Karl-Heinz Weingartner

Karl-Heinz Weingartner 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).

  • Sewing machine top cover thread trimmer
    Patent number: 4850293
    Abstract: A trimming device for trimming a top cover thread from a workpiece on a multiple needle sewing machine having a thread catching device which is movable between a counter-plate and a knife. In operation the top cover thread is picked up by the thread catching device between a workpiece and a top cover thread guide. A top cover thread trap serves as a counter-plate for the thread catching device. The knife is attached to the counter plate with a gap therebetween, with the thread catching device being swingable within said gap.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: July 25, 1989
    Assignee: Union Special G.m.b.H.
    Inventors: Wolfgang Norz, Gunter Rohr, Karl-Heinz Weingartner