Patents by Inventor Robert B. Egtvedt

Robert B. Egtvedt 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 work support and feed control
    Patent number: 4024825
    Abstract: Apparatus as for use on a sewing machine, employing a stock pivoting and advancing platform for directionally guiding while advancing stock relative to a reference point during performance of an operation on said stock, the operation being therefore in a controlled pattern. Normally, a working tool such as a stitching needle, is at the reference point. The stock is incrementally advanced while repeatedly and incrementally being pivoted by the special platform in response to sensing of the pattern such as an edge of the stock. In use on a sewing machine, both the advancement and the pivoting are conducted while the stitching needle penetrates the material.
    Type: Grant
    Filed: March 11, 1976
    Date of Patent: May 24, 1977
    Assignee: Wolverine World Wide, Inc.
    Inventors: Robert B. Egtvedt, John R. Den Bleyker, Theodore C. Zwiep
  • Method of contour sewing
    Patent number: 3965832
    Abstract: Apparatus as for use on a sewing machine, employing a stock pivoting and advancing platform for directionally guiding while advancing stock relative to a reference point during performance of an operation on said stock, the operation being therefore in a controlled pattern. Normally, a working tool such as a stitching needle, is at the reference point. The stock is incrementally advanced while repeatedly and incrementally being pivoted by the special platform in response to sensing of the pattern such as an edge of the stock. In use on a sewing machine, both the advancement and the pivoting are conducted while the stitching needle penetrates the material.
    Type: Grant
    Filed: November 20, 1974
    Date of Patent: June 29, 1976
    Assignee: Wolverine World Wide, Inc.
    Inventors: Robert B. Egtvedt, Theodore C. Zwiep, John R. Den Bleyker