Patent · US Active

Drill bit, a drill rod and a self drilling roof bolt

US8286736B2 · kind B2 · utility

13Cited by

13References

15Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Steven Weaver · Fletcher, AU
Michael McLean · Newcastle, AU

Key dates

Filing date	Feb 6, 2004
Grant date	Oct 16, 2012
Priority date	—
Expiry date	Nov 26, 2027

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D21/0053
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drill bit for attachment to an elongate drill rod, the drill bit including means for attachment to an end of the drill rod, and a leading end which defines a pair of diametrically opposed slots which open axially for receipt of a portion of a drill tip which projects axially from the slots. The drill tip being fixedly secured within each of the slots. Further, a drill rod or a self drilling roof bolt comprising the drill bit.

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