Patents by Inventor Todd A Haines

Todd A Haines 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).

  • Coupling for rotary drill strings
    Publication number: 20030155769
    Abstract: Male and female coupling members (120, 130) for a drill string (10) have abutment faces (122, 132), fitted with torque reducing rings (124, 135) of low-friction, material, and multi-start threads (140, 150), with higher lead angles ∝ than forconvention coupling threads, to enable uncoupling of the coupling members (120, 130) at reduced torque.
    Type: Application
    Filed: January 16, 2003
    Publication date: August 21, 2003
    Inventor: Todd A Haines