The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 2016
Filed:
Apr. 19, 2008
Applicant:
Bernhard Walter Borschert, Bamberg, DE;
Inventor:
Bernhard Walter Borschert, Bamberg, DE;
Assignee:
KENNAMETAL INC., Latrobe, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B 35/00 (2006.01); B23B 51/02 (2006.01); B23B 47/28 (2006.01); B23B 51/00 (2006.01);
U.S. Cl.
CPC ...
B23B 51/02 (2013.01); B23B 51/009 (2013.01); B23B 2251/04 (2013.01); B23B 2251/14 (2013.01); B23B 2251/287 (2013.01); B23B 2265/12 (2013.01); Y10T 408/03 (2015.01); Y10T 408/906 (2015.01); Y10T 408/9095 (2015.01);
Abstract
A drilling tool extends in a longitudinal direction and has a drill point and first and second major cutting edges, which extend approximately radially outward. The drill point is arranged eccentrically relative to a central axis, which is the same as the axis of rotation. The second major cutting edge is arranged by a cutting-height difference higher than the first major cutting edge. The first major cutting edge has a shorter radial edge length than the second major cutting edge. A method of utilizing the tool is also disclosed.