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

Image Number 4 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
Solid-state imaging device
Crowd validated internet document witnessing system
Nucleic acid sequences encoding strictosidine synthase proteins
Stepped delay control of integrated switches
Method for operation of multi-layer-multi-turn high efficiency inductors
Fabrication of high gradient insulators by stack compression
Signal routing dependent on a loading indicator of a mobile node
  Randomly Featured Patents
Fixing unit and image forming apparatus
Input manager for a computer application with display icons mapped to a user selectable set of standard keyboard keys
Piezoelectric device and fabricating method thereof
Low profile modular receptacle and method of making same
Archival washer for photographic prints or film with multi level dividers
Computer apparatus, storage apparatus, system management apparatus, and hard disk unit power supply controlling method
Computer network protection using cryptographic sealing software agents and objects
Orthopedic brace including a protector assembly
Connector for mating modular plug with printed circuit board
Process for the preparation of sulphonic acid chlorides