Patents by Inventor Siegfried Leonhardt

Siegfried Leonhardt 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: 5904279
    Abstract: The present invention relates to a method and an apparatus for straightening substantially tubular textile goods, such as socks, stockings, tights etc., which have an asymmetry, such as a reciprocated heel. According to the invention the textile goods are drawn onto a substantially cylindrical form, the form with the textile product drawn onto it is rotated about a longitudinal axis, during rotation the asymmetry position is detected as is the position of the form and finally the form is rotated into a predetermined position corresponding to the detected asymmetry position. Preferably, simultaneously the stitch pattern of the textile product drawn onto the form is inspected for faults and flaws.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: May 18, 1999
    Assignee: Wepamat Maschinenbau GmbH
    Inventors: Wolfgang Bertram, Siegfried Leonhardt
  • Patent number: 4879862
    Abstract: In the process of packaging letter envelopes and mailing wallets, the packaging batch is counted in the end region of the production machine, and the individual article of the packaging batch corresponding to the specific batch size is at least identified or optionally pushed a certain distance sideways out of the path of movement of the packaging batch in one direction or the other as a counting article. The packaging batch is deposited on a conveyor belt and conveyed away. A stack support keeps the stack approximately vertical on its end face. The stack support is advanced in front of the stack at the conveying speed of the conveyor belt. As soon as the counting article at the end of a stack has arrived at a transfer point which is at a relatively long distance from the production machine, a separating device is introduced into the stack, with the result that the following portion of the packaging batch is temporarily halted.
    Type: Grant
    Filed: December 8, 1987
    Date of Patent: November 14, 1989
    Assignee: Otto Ficker AG
    Inventors: Bert Nolte, Siegfried Leonhardt