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
Providing enhanced content
Nucleating agent for lithium nitrate trihydrate thermal energy storage medium
Emulsion aggregation toner compositions
Printer server, print control method, and storage medium for producing a printed output by a device of a low-display and low-input capability
Low latency, high bandwidth data communications between compute nodes in a parallel computer
Color display architecture and driving methods
Method and computer program product for creating a questionnaire interface program
  Randomly Featured Patents
Wicking fibers in combination with a repellent fabric
Infrared photodiode array
Formable composite magnetic flux concentrator and method of making the concentrator
Instrument and method for high-speed perfusion imaging
Modified mini stock racing car wheel hub
Computer terminal box with improved grounding structure
Automobile servicing system
First-side dual-layer optical data storage disk and method of manufacturing the same
IP service authorization in wireless communications networks
Cable elevator