Patents by Inventor Rudolf Roper

Rudolf Roper 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).

  • Directional drilling tool apparatus and method
    Patent number: 5156222
    Abstract: The present invention discloses a drilling tool apparatus and method for sinking drill holes in underground rock formations while using a selectable direction profile for the drill hole.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: October 20, 1992
    Assignee: Baker Hughes Incorporated
    Inventors: Rainer Jurgens, Rudolf Roper, Joachim Oppelt, Dietmar Krehl, Dagobert Feld
  • Auxiliary controlled valve disposed in a drilling string
    Patent number: 4519574
    Abstract: An auxiliary controlled valve including a valve body (8) displaceable against a valve seat (9) disposed in a drilling string (6) to produce pressure pulses in drilling fluid renders possible a selective closing or opening of a low-resistance transmission section (12) which lies parallel to a main throttle section (10). The valve has a central passage which permits the passage of measuring instruments through the valve regardless of the particular position of a valve body (8). The valve body (8) is largely balanced out with regard to dynamic flow forces so that only a comparatively small actuating force is necessary.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: May 28, 1985
    Assignee: Norton Christensen, Inc.
    Inventor: Rudolf Roper