Resources Contact Us Home
Jack element adapted to rotate independent of a drill bit

Image Number 5 for United States Patent #7497279.

In one aspect of the present invention a downhole tool string has a rotor secured within a bore and connected to a jack element that is substantially coaxial with the rotor. A portion of the jack element extends out of an opening formed in a working face of a drill bit located at the bottom of the drill string. The jack element is adapted to rotate independent of the drill bit when the rotor and drill bit are in operation.

  Recently Added Patents
Ink, ink jet recording method, ink cartridge, and ink jet recording apparatus
Filtering method for improving the data quality of geometric tire measurements
Gathering user feedback in web applications
Small molecule inhibitors of kynurenine-3-monooxygenase
Pharmaceutical treatment process using chitosan or derivative thereof
Data processing method
Tab visibility
  Randomly Featured Patents
Multi-plane video RAM
Radio receiver
Functional verification of logic and memory circuits with multiple asynchronous domains
Cable tray protection system
Tire building machine
Device comprising a heating sample carrier
Automatic system for surveillance of coal dust supply to coal furnaces
Catalyst for dehydrogenating primary alcohols to make carboxylic acid salts
Electrically conducting polyacetylenes
Roadway sensor with improved insulated signal carrying wires