Patents by Inventor Jorg Lorenz

Jorg Lorenz 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).

  • Centralizer
    Patent number: 5881810
    Abstract: A centralizer comprises two annular bands which are spaced apart by a plurality of members extending there-between. The members are inclined to the longitudinal axis of the centralizer by an angle a of typically 30.degree. to 45.degree..
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: March 16, 1999
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Bernd Reinholdt, Jorg Lorenz, Arnold Stokka
  • Positioning apparatus for a power tong
    Patent number: 5667026
    Abstract: A positioning apparatus for moving a power tong (110) between an operative and an inoperative position is a drilling tower (105) comprises a first arm (102) and a second arm (103). One end of the first arm (102) is pivotally connected to one end of the second arm (103) at pivot (106) whilst the other end of both the first arm (102) and the second arm (103) are pivotally mounted on a beam (104) attached to the drilling tower (105). Both arms (102, 103) can be extended and retracted in unison to move the power tong (110) towards and away from its operation position circumjacent a pipe string.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: September 16, 1997
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Jorg Lorenz, Joerg-Erich Schulze-Beckinghausen