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
Method of signaling control information in wireless communication system with multiple frequency blocks
Lead with braided reinforcement
Real-time interactive wagering on event outcomes
Tunable laser source using intracavity laser light outcoupling and module containing the same
Method and apparatus for suppressing duplicate alarms
Multi-layer memory structure for behavioral modeling in a pre-distorter
Cord management clip
  Randomly Featured Patents
Nephrolepsis exaltata named Napa Cottage
Automatic transmission for vehicle
Liquid crystal compositions comprising an abrasive and magnesium sulfate heptahydrate
Method of creating a composite print including the user's image
Culture apparatus
Strip of plastic fastening clips for the fastening of electrical wires, tubes and the like
Wide bandgap semiconductor device including lightly doped active region
Parking card
Integrated circuit memory device having reduced stress across large on-chip capacitor
Copper hydrides as co-catalysts for olefin polymerization