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. 31, 1982
Filed:
Feb. 05, 1979
Applicant:
Inventors:
Michael A College, Everett, PA (US);
Robert J McKenry, Windber, PA (US);
Assignee:
Kennametal Inc., Latrobe, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 92 ; 175354 ;
Abstract
A nonrotatable excavating bit comprising a forward working portion and hard wear resistant material attached thereto and having a rearward shank portion which is circular in cross section and is adapted to fit into a circular bore of a support block. An abutment shoulder is formed at the juncture of the forward working portion and rearward shank portion and a tang extends from the shoulder and is adapted to fit down over and mate with a surface of said support block so as to hold the bit nonrotatable in the support block.