Patents by Inventor Robert C. Schuler

Robert C. Schuler 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).

  • Book block sewing method and apparatus
    Patent number: 5085551
    Abstract: In the sewing of individual book block sections to define a thread-sewn book block, needles which pre-pierce the book block section to facilitate sewing are caused to remain in engagement with the block section during its transfer from a feed position to the sewing position. During the pre-piercing operation, the book block section is held against a sewing saddle by means of an apertured hold-down element, the tips of the pre-piercing needles being received in the hold-down element.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: February 4, 1992
    Assignee: Kolbus GmbH & Co. KG
    Inventors: Ulrich Erdbories, Robert C. Schuler