Patent · US Active

Mining core drill bit and method of making thereof

US8210287B1 · kind B1 · utility

2Cited by

14References

20Claims

0Family size

Assignee

Diamond Products Limited · US

Inventors

Karl H. Moller · Westlake, US
Andrew L. Jedick · Avon Lake, US
Thomas G. Ruffner · Oberlin, US

Key dates

Filing date	Jan 4, 2010
Grant date	Jul 3, 2012
Priority date	—
Expiry date	Oct 9, 2030

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/02
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A core drill bit includes an elongate hollow cylindrical body having opposite first and second ends with an end section having an end face defining an annular non-planar surface. The cutting head includes a plurality of circumferentially spaced apart cutting segments, the cutting segments being electrical welded to the non-planar surface whereby raised portions of the surface melt during the welding to affix the cutting segments with the face of the tool body.

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