Patent · US Expired

Drill for drilling, a method for making a drill for drilling, and a cutting tool

US6688817B2 · kind B2 · utility

16Cited by

8References

20Claims

0Family size

Assignee

KENNAMETAL INC. · US

Inventors

Bernhard Borschert · Bamberg, DE
Dieter Muhlfriedel · Ebermannstadt, DE
Karl Heinz Wendt · Ebermannstadt, DE

Key dates

Filing date	Aug 10, 2001
Grant date	Feb 10, 2004
Priority date	—
Expiry date	Oct 20, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/9097
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method of making a drill comprising a tip (16), a shank (10) and a flute area having chip spaces (12, 14) formed therein, the drill being substantially completely coated with a hard material, and is characterized by applying an abrasive material to merely the tip (16) before coating the drill with the hard material. The drill may more particularly be a solid carbide drill.

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