Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Technique for manufacturing bit patterned media
Method for forming a semiconductor device using selective epitaxy of group III-nitride
Cytokine biomarkers as predictive biomarkers of clinical response for Glatiramer acetate
Method and apparatus for determining the altitude of a mobile device
Managing a packet service call within mobile communications user equipment
Implantable defibrillator systems and methods with mitigations for saturation avoidance and accommodation
Visual universal decryption apparatus and methods
  Randomly Featured Patents
Process control transmitter having an externally accessible DC circuit common
Processor tray
Enclosure for a direct access storage device expansion unit for a data processing system
Detection of circulating tumor cells in peripheral blood with an automated scanning fluorescence microscope
Combined container and cap
Process for preparing benzyl-substituted rhodanine derivatives
Capacitive power and ground plane structure utilizing fractal elements for the reduction of radiated emissions
Drive and protection system for variable speed motor
Adjustable saddle
Method and apparatus for photographic exposure using an LCD pad