Patents by Inventor James N. Oulman

James N. Oulman 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).

  • Adjustable clamp frames for thermo form machine
    Patent number: 4938678
    Abstract: An adjustable clamp frame assembly for holding different sizes of plastic sheets in a thermo form machine. The frame assembly has longitudinal and transverse beams carrying clamp units that hold a plastic sheet on the beams. The longitudinal and transverse beams are movable along rails of a rectangular frame to change the lateral distance between both the longitudinal and transverse beams to accommodate different sizes of plastic sheets.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: July 3, 1990
    Assignee: Winnebago Industries, Inc.
    Inventor: James N. Oulman