Patent · US Active

Drill bit

US7641002B2 · kind B2 · utility

27Cited by

118References

18Claims

0Family size

Inventors

David R. Hall · Provo, US
John Bailey · Orland Park, US
Casey Webb · Spanish Fork, US

Key dates

Filing date	Mar 28, 2008
Grant date	Jan 5, 2010
Priority date	—
Expiry date	Aug 27, 2028

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B21/10
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

In one aspect of the present invention, a rotary drag drill bit has a body intermediate a shank and a working face. The working face has a plurality of blades converging towards a center of the working face and diverging towards a gauge of the working face. A carbide section is fixed to the working face and positioned within a pocket disposed within an inverted cone of the working face. The carbide section has a distal end exposed within the working face.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.