Patents by Inventor Paul W. Knecht

Paul W. Knecht 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).

  • Two-pipe on-grade directional boring tool and method
    Patent number: 6827158
    Abstract: A method and apparatus for boring a close tolerance on-grade subsurface borehole. A downhole tool assembly for use with a dual member drill string comprises a directional boring tool. The dual member drill string comprises an outer member and an inner member disposed within the outer member and rotatable independently of the outer member. The downhole tool assembly permits the directional boring tool to be connected to the inner member of the drill string. Rotation of the inner member of the drill string causes rotation of the boring tool. The borehole is drilled in a straight manner by rotating the boring tool with the inner member of the drill string and simultaneously advancing the drill string through the earth. The borehole direction is changed by orienting the directional boring tool with the inner member of the drill string and then advancing the drill string without rotation.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: December 7, 2004
    Assignee: The Charles Machine Works, Inc.
    Inventors: Ted Dimitroff, Paul W. Knecht