Patent · US Active

Drill, a drill assembly, and a tool head for a cutting tool

US8376669B2 · kind B2 · utility

25Cited by

14References

16Claims

0Family size

Assignee

KENNAMETAL INC. · US

Inventors

Horst Jaeger · Koblenzer Straße, DE
Peter Karl Mergenthaler · Markt Bibart, DE
Berthold Heinrich Zeug · Ergolding, DE

Key dates

Filing date	Sep 16, 2008
Grant date	Feb 19, 2013
Priority date	—
Expiry date	Nov 12, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/90993
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A drill includes a tool body having a fluted portion having a second end and a tool head portion, having a cutting tip and at least one cutting edge, removably connected to the second end of the fluted portion. The fluted portion includes a receiving pocket disposed in the second end and is defined by a peripheral side wall extending about the periphery of the receiving pocket. The tool head portion includes a driving projection configured to be inserted into the receiving pocket. The driving projection and receiving pocket have corresponding elongated, curvilinear, dog-bone shapes. The driving projection includes a first end portion, a second end portion, and a central portion disposed between connecting the first end portion and the second end portion. The first end portion and the second end portion each have a width that is substantially greater than a width of the central portion.

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