Patent · US Active

Percussive drill bit

US7527110B2 · kind B2 · utility

5Cited by

130References

21Claims

0Family size

Inventors

David R. Hall · Provo, US
Ronald B. Crockett · Payson, US
Joe Fox · Spanish Fork, US
John Bailey · Orland Park, US

Key dates

Filing date	Oct 13, 2006
Grant date	May 5, 2009
Priority date	—
Expiry date	Dec 25, 2026

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/56
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A percussive drill bit has a working face opposite a shank end. The working face has a central jack insert and a plurality of peripheral inserts extending from the working face. The ends of the plurality of the peripheral inserts form an impacting plane. The central jack insert is disposed within a recessed portion of the working face and has an end extending between the working face and the impacting plane.

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