Howard James Mccreery

US Patent:

53889320, Feb 14, 1995

Filed:

Sep 13, 1993

Appl. No.:

8/120713

Inventors:

Kenneth G. DeRoche - Cary NC
Howard J. McCreery - Raleigh NC
Robert Jauch - Usingen-Wernborn, DE

Assignee:

Kennametal Inc. - Latrobe PA

International Classification:

B23C 520
B23C 510

US Classification:

407113

Abstract:

The present invention relates to a cutting insert for a milling cutter. The cutting insert includes a main body having a top face and at least one elevated corner nose area formed on the top face. Extending around the elevated corner nose area and along an adjacent side face of the cutting insert is a cutting edge. The elevated corner nose area includes an angled chamfer that intersects with the cutting edge and a flat surface disposed inwardly of the angled chamfer. A pair of tapered lands extend from the flat surface toward a respective side face of the cutting insert where each of the tapered lands intersect with the cutting edge.

US Patent:

40638430, Dec 20, 1977

Filed:

Jun 21, 1976

Appl. No.:

5/697846

Inventors:

George G. Barkley - New Alexandria PA
John A. Cmar - Latrobe PA
Howard J. McCreery - Latrobe PA

Assignee:

Kennametal Inc. - Latrobe PA

International Classification:

B23B 2912

US Classification:

408146

Abstract:

A shank for an adjustable boring bar is disclosed herein having first and second members telescopically engaged in a nonrotatable relation from one to the other with one of the members having mounted thereon an axially adjustable abutment means such that rotation of the abutment means on one member provides relative axial movement between the first and second members. A recess is shown formed on the outer surface of the innermost telescopically engaged member, the recess having a declining surface in the direction of the abutment means such that a clamp element located and engaged in the outermost telescopically engaged member is operable downwardly to engage said declining surface and hold the first and second members in a firm abutting relationship.