Patents by Inventor Marshall C. Richards

Marshall C. Richards 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).

  • Textile spreader roller
    Patent number: 4021894
    Abstract: A spreader roller for textiles which is fabricated by positioning a smooth cylindrical supporting member coaxially within a corrugated tube having inner and outer helical ridges, the outer ridges on one longitudinal half of the tube being of opposite hand to the outer ridges on the other half of the tube. The corrugated tube is fastened to the supporting member along the inner helical ridges, preferably by plug welding at spaced points along the inner ridges.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: May 10, 1977
    Assignee: Crompton & Knowles Corporation
    Inventors: Robert J. Poterala, Marshall C. Richards