Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Anti-tracking spear points for earth-boring drill bits










Image Number 5 for United States Patent #8579051.

Described herein are roller cone drill bits and modified roller cones for use in drilling subterranean earth formations, and more specifically roller cone drill bits and roller cones having optimized spear point designs and blade orientations on at least one of the roller cones for reduced tracking and/or increased drilling performance during bit use. The roller cone drill bits include a bit body with a longitudinal axis, one or more bit legs depending from the body, and at least one roller cone attached to each of the bit legs and able to rotate with respect to the bit body, wherein at least one of the roller cones includes a spear point at the cone apex having two or more cutting blades, the cutting blades being oriented at a variety of non-equal, asymmetric angles about a central cone axis with respect to each other, such that tracking during drilling using the drill bit is minimized or eliminated.








 
 
  Recently Added Patents
Resistor-2 resistor (R-2R) digital-to-analog converter with resistor network reversal
Image-monitoring method for electroporation treatment and as associated image-monitoring appliance
Activated carbon cryogels and related methods
Electrical conduit containing a fire-resisting thermoplastic composition
Random sampling for geophysical acquisitions
Continuously variable transmission and control method thereof
Systems and methods for dissipating an electric charge while insulating a structure
  Randomly Featured Patents
Vehicle wiper system and a method for operating a wiper arm linkage
Method and system for associating related user interface objects
Independent rear wheel suspension having a pivotable connection between two transverse control arms
Alphabet playing card deck
Appliance having a user interface panel and a beverage dispenser
Process for making soil release polymer granules
Bimodal replacement traffic light
Reclining chair and mechanism therefor
Method and apparatus for detecting the type of interface to which a peripheral device is connected
Process for making polymeric articles