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










Image Number 6 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
System and method for content delivery
Combination of a microorganism and a phytosphingosine derivative, composition, methods of use
In-vehicle communication system and method of operation
Inhibitors of human immunodeficiency virus replication
System and method for creating, managing and trading hedge portfolios
Case for electronic device
Adding value to a rendered document
  Randomly Featured Patents
Portion of a shoe upper
System and method for improved network security
Drill hitch transport
Power routing device for expansion slot of computer system
Context-based arithmetic encoding apparatus and method and context-based arithmetic decoding apparatus and method
Method and apparatus for improving exhaust gas consumption in an exhaust conduit
Collapsible bedspread holder
Method, apparatus, and program product for displaying gaming results through variable prize progressions
Memory using a plurality of diodes as program selectors with at least one being a polysilicon diode
Label for plants and nursery stock