Patents by Inventor Harry Medlock

Harry Medlock 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).

  • Down hole tension/compression device for logging tools
    Patent number: 6557631
    Abstract: A self contained logging tool comprising electronic apparatus for logging a well is disclosed. This tool includes a normally open fluid flow valve structure being activated to operation by differential movement of drill pipe in which the logging tool resides. The valve structure operates to gradually close and thereby restrict the flow of fluid through the valve, which in turn restricts the flow of fluid within the drill pipe. This flow restriction results in increasing the back pressure within drill pipe to provide an indication at the surface that the logging tool is struck.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: May 6, 2003
    Assignee: Reeves Wireline Technologies, Ltd.
    Inventors: Michael Charles Spencer, Harry Medlock