Patents by Inventor Dwayne K. Steenhoek

Dwayne K. Steenhoek 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).

  • Pipe end shaper tool
    Patent number: 4087997
    Abstract: A shaper tool for truing the end portion of a pipe or tubing, including a plurality of cylindrical projections adapted to be inserted into the end of a deformed tube, and means to adjust the relative position of the projections to exert outward radial force on the inside of the tube.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: May 9, 1978
    Inventor: Dwayne K. Steenhoek