Patents by Inventor Reinhard Sielemann

Reinhard Sielemann 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: 5249540
    Abstract: A sewing-material feeding device for a sewing machine has an upper material feeder and a lower material feeder which coact for feeding the sewing material, the lower material feeder being adjacent to the throat plate. The needle passes downward through an extension associated with the upper material feeder, the extension defining a downward-facing resting surface, the resting surface obstructing upward movement of said sewing material and thereby reducing fluttering of the sewing material as the needle is pulled upward and out of the sewing material. A tongue adjacent the throat plate is urged upward and against a portion of the upper material feeder so as to further reduce fluttering of the sewing material as the needle is pulled upward and out of the sewing material. The tongue has a throat hole for receiving the needle when it pierces the sewing material and passes into the throat plate.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: October 5, 1993
    Assignee: Durkopp Adler Aktiengesellschaft
    Inventor: Reinhard Sielemann