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:
Mar. 25, 1980
Filed:
Jun. 16, 1978
Applicant:
Inventors:
Robert H Montgomery, Jr, Fishertown, PA (US);
Seibert S Oaks, Everett, PA (US);
Assignee:
Kennametal Inc., Latrobe, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 86 ; 175377 ; 299 87 ;
Abstract
The specification discloses an insert tipped tool bit having grooves formed on the longitudinal periphery of the bit in the parent material supporting the insert and a method of reducing erosion of the insert supporting parent material by forming grooves on the longitudinal periphery of the tool bit and sizing and spacing the grooves so that earth fines can pack in the grooves and create a boundary layer of earth fines around the parent material.