Patents by Inventor Bernd Helmut Dobberstein

Bernd Helmut Dobberstein 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).

  • Riser and tubular inspection systems
    Patent number: 6931748
    Abstract: A system for measuring inner diameter of a tubular, e.g., but not limited to, a riser or a pipe, the system including at least one linear distance measuring device movable through a hollow tubular, a main body also movable through said tubular, the at least one linear distance measuring device mounted on the main body, and the at least one linear distance measuring device for producing a measurement signal indicative of a measurement of inner diameter of the tubular.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: August 23, 2005
    Inventors: Clive Chemo Lam, Manfred Hermann Worms, Helmut Wolfgang Knapwost, Bernd Helmut Dobberstein, Reinhold Kammann, Matthias Detlef Janssen
  • Tubular ovality testing
    Patent number: 6862099
    Abstract: A system for measuring diameter (inner and/or outer) of a tubular, the system in at least certain aspects including at least one linear distance measuring device with respect to which a tubular to be measured is movable, the at least one linear distance measuring device including a detector for detecting a surface of the tubular, the detector movably mounted to mount apparatus, the detector movable longitudinally along the surface of the tubular and movable axially in response to variation in diameter of the tubular, a rotatable head rotatable with respect to the tubular either outside of it or within it, the mount apparatus secured to the rotatable head, at least one signal production apparatus secured to the mount apparatus or head, and in communication with the linear distance measuring device, the at least one signal production apparatus for producing a signal indicative of distance between said detector and a known point, and transmitting apparatus for transmitting said signals to processing equipment fo
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: March 1, 2005
    Assignee: Varco I/P
    Inventors: Clive Chemo Lam, Manfred Hermann Worms, Helmut Wolfgang Knapwost, Bernd Helmut Dobberstein
  • Riser and tubular inspection systems
    Publication number: 20040016139
    Abstract: A system for measuring inner diameter of a tubular, e.g., but not limited to, a riser or a pipe, the system including at least one linear distance measuring device movable through a hollow tubular, a main body also movable through said tubular, the at least one linear distance measuring device mounted on the main body, and the at least one linear distance measuring device for producing a measurement signal indicative of a measurement of inner diameter of the tubular.
    Type: Application
    Filed: April 1, 2003
    Publication date: January 29, 2004
    Inventors: Clive Chemo Lam, Manfred Hermann Worms, Helmut Wolfgang Knapwost, Bernd Helmut Dobberstein, Reinhold Kammann, Matthias Detlef Janssen
  • Tubular ovality testing
    Publication number: 20030189713
    Abstract: A system for measuring diameter (inner and/or outer) of a tubular, the system in at least certain aspects including at least one linear distance measuring device with respect to which a tubular to be measured is movable, the at least one linear distance measuring device including a detector for detecting a surface of the tubular, the detector movably mounted to mount apparatus, the detector movable longitudinally along the surface of the tubular and movable axially in response to variation in diameter of the tubular, a rotatable head rotatable with respect to the tubular either outside of it or within it, the mount apparatus secured to the rotatable head, at least one signal production apparatus secured to the mount apparatus or head, and in communication with the linear distance measuring device, the at least one signal production apparatus for producing a signal indicative of distance between said detector and a known point, and transmitting apparatus for transmitting said signals to processing equipment fo
    Type: Application
    Filed: April 5, 2002
    Publication date: October 9, 2003
    Inventors: Clive Chemo Lam, Manfred Hermann Worms, Helmut Wolfgang Knapwost, Bernd Helmut Dobberstein