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. 19, 2014
Filed:
Mar. 23, 2011
Applicants:
Douglas Edward Bise, Chilhowie, VA (US);
Seth Daniel Colvin, Bedford, PA (US);
Chad Allen Swope, Bedford, PA (US);
Inventors:
Douglas Edward Bise, Chilhowie, VA (US);
Seth Daniel Colvin, Bedford, PA (US);
Chad Allen Swope, Bedford, PA (US);
Assignee:
Kennametal Inc., Latrobe, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 10/36 (2006.01); E21B 10/58 (2006.01); E21B 10/38 (2006.01);
U.S. Cl.
CPC ...
E21B 10/58 (2013.01); E21B 10/38 (2013.01);
Abstract
A hard cutting insert for use with a roof drill bit includes a first webbed notch and a second webbed notch structured and arranged on the hard insert for removing or evacuating drilling debris from an upper surface of the hard insert during a drilling operation. A roof drill bit including a hard cutting insert having a first webbed notch and a second webbed notch structured and arranged on the hard insert.