Patents by Inventor Paul H. Hookings

Paul H. Hookings 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).

  • Method and apparatus for expanding spiralweld pipe
    Patent number: 4047419
    Abstract: This invention provides a method and apparatus for expanding spiralweld pipe. The expander head is cantilevered at a fixed location and the spiralweld pipe is advanced in stages around the expander head, moving in the direction of the pipe axis. At each stage, the pipe is stopped, and the expander head is expanded to cause expansion in the pipe. The expander head has on its surface a helically arranged recess matching the main weld of the pipe. As the pipe is moved between adjacent expansion locations, it undergoes axial and rotational motion so that the main weld tracks in registry with the recess.
    Type: Grant
    Filed: June 23, 1976
    Date of Patent: September 13, 1977
    Assignee: The Steel Company of Canada, Limited
    Inventors: Paul H. Hookings, Harry C. Wade, Phillip Deijs