Patents by Inventor Helmut Florke

Helmut Florke 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).

  • Modular thread connection with high fatigue resistance
    Patent number: 7150479
    Abstract: A connector for oilfield applications has high resistance against cyclical bending stress and fatigue failure. In a preferred embodiment, the threaded connector has a pin-box arrangement for joining two components. The pin and box have threads with a pre-determined profile different from that specified by conventional (e.g., API) specification and provide improved strength characteristics. Certain embodiments of the present invention include a pitch-to-root radius ratio that is less than that specified by the API, a thread height-to-root radius ratio that is less than that specified by the API, a flank angle that is less than that specified by the API, and a taper that is less than that specified by the API for said pre-determined outside diameter. Certain other embodiments have less than all of these ratios and dimensions.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: December 19, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Detlev Benedict, Harald Düber, Helmut Flörke
  • Modular thread connection with high fatigue resistance
    Publication number: 20030156918
    Abstract: A connector for oilfield applications has high resistance against cyclical bending stress and fatigue failure. In a preferred embodiment, the threaded connector has a pin-box arrangement for joining two components. The pin and box have threads with a pre-determined profile different from that specified by conventional (e.g., API) specification and provide improved strength characteristics. Certain embodiments of the present invention include a pitch-to-root radius ratio that is less than that specified by the API, a thread height-to-root radius ratio that is less than that specified by the API, a flank angle that is less than that specified by the API, and a taper that is less than that specified by the API for said pre-determined outside diameter. Certain other embodiments have less than all of these ratios and dimensions.
    Type: Application
    Filed: December 9, 2002
    Publication date: August 21, 2003
    Applicant: Baker Hughes Incorporated
    Inventors: Detlev Benedict, Harald Duber, Helmut Florke