Patents by Inventor Kenneth Poulson

Kenneth Poulson 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).

  • Mine prop jack and method of prestressing a mine prop
    Publication number: 20120148350
    Abstract: A telescoping mine prop is prestressed by engaging the prop with a jack and thereby telescopically expanding the prop against opposing surfaces of the mine with the jack. Thereafter the prop is locked in position and the jack is disengaged from the prop for use with the expansion of another prop, thereby leaving the mine prop in a prestressed condition.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 14, 2012
    Inventors: Kenneth Poulson, Maury Gleave