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:
Aug. 26, 2014
Filed:
Oct. 04, 2010
Applicant:
David Ben Harouche, Nahariya, IL;
Inventor:
David Ben Harouche, Nahariya, IL;
Assignee:
Iscar, Ltd., Tefen, IL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B 51/00 (2006.01); B23B 51/02 (2006.01);
U.S. Cl.
CPC ...
B23B 51/02 (2013.01); B23B 2251/18 (2013.01); B23B 2251/14 (2013.01); B23B 2251/202 (2013.01); B23B 2251/082 (2013.01);
Abstract
A twist drill includes a cutting portion and a drill body. The cutting portion has a chisel edge, a segment relief surface, a chamfer relief surface and at least two flutes extending longitudinally to the drill body. Each flute has a rake surface and a gash extending away from the chisel edge. The cutting portion further has at least two cutting segments, each cutting segment having a first curved cutting edge, a second curved cutting edge and a chamfer cutting edge.