Patents by Inventor Fritz Krowatachek

Fritz Krowatachek 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: 5036780
    Abstract: The present invention pertains to a feed mechanism for a sewing machine for displacement-free, near-edge connection of two flexible layers of fabric in the direction of sewing. The device, which is to be used as an attachment, consists essentially of a driven, endless feeding arrangement guided in the horizontal direction and a plurality of receiving elements which are designed as clamps. The receiving elements include clamp lower parts arranged at a vertically spaced location from the fabric support surface and clamp upper parts that can be actuated like pushbuttons, as well as a pressing element acting on the clamp upper parts.With their edges that are to be connected, the fabric layers are fed into a flat feeding section and fixed and carried by a first clamp and continually fixed by consecutive clamps in the same position in the device, thus carried along the stitch formation site, and continuously released in the sewn state at a discharge point.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: August 6, 1991
    Assignees: PFAFF Industriemaschinen GmbH, Kochs Adler Aktiengesellschaft, Durokoppwerke GmbH
    Inventor: Fritz Krowatachek