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:
May. 28, 2013
Filed:
Oct. 30, 2007
Applicants:
David R. Hall, Provo, UT (US);
Ronald B. Crockett, Payson, UT (US);
Jeff Jepson, Spanish Fork, UT (US);
Inventors:
David R. Hall, Provo, UT (US);
Ronald B. Crockett, Payson, UT (US);
Jeff Jepson, Spanish Fork, UT (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C 35/183 (2006.01);
U.S. Cl.
CPC ...
Abstract
In one aspect of the invention, an attack tool is disclosed which comprises a wear-resistant base suitable for attachment to a driving mechanism. The wear-resistant base has a shank. A cemented metal carbide segment is bonded to the base and the shank has a wear-resistant surface. The wear-resistant surface has a hardness greater than 60 HRc and/or is work hardened.