Resources Contact Us Home
Single cone rock bit having inserts adapted to maintain hole gage during drilling

Image Number 7 for United States Patent #7690446.

A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string. A bearing journal depends from the bit body. A single roller cone is rotatably attached to the bearing journal. The roller cone has a plurality of inserts disposed at selected positions about the cone. The journal defines a rotation angle with respect to an axis of rotation of the bit such that the roller cone includes a wall contact zone and a bottom contact zone. At least one of the inserts disposed in the wall contact zone has an extension portion terminating in a substantially planar upper surface.

  Recently Added Patents
Consistent retention and disposition of managed content and associated metadata
Protein purification
Power supply system for motor vehicle
Phase-amplitude 3-D stereo encoder and decoder
Implantable neuro-stimulation electrode with fluid reservoir
Electronic communication device
Method for controlling a motor
  Randomly Featured Patents
Sports shirt
Method for fabricating mask ROM via medium current implanter
Work table
Water trampoline
External tieback connector and method for tying back riser to subsea wellhead
Rotary dry shaver
Recombinant viral and non-viral vectors containing the human urokinase plasminogen activator gene and its utilization in the treatment of various types of hepatic, renal, pulmonary, pancreatic
Material handling apparatus
Patching resins for insulating tapes
Drawing style domains