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:
Nov. 16, 1982
Filed:
Jun. 05, 1980
Applicant:
Inventor:
Lloyd L Garner, Dana Point, CA (US);
Assignee:
Smith International, Inc., Newport Beach, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ; C04B / ; E21B / ; E21C / ;
U.S. Cl.
CPC ...
7520 / ; 51309 ; 75204 ; 75200 ; 7610 / ; 76DI / ; 175410 ; 175379 ; 299 79 ; 428547 ; 428550 ; 428551 ; 428552 ; 428698 ; 501 87 ;
Abstract
A method of fabricating a rock bit insert which has improved wear characteristics is disclosed. Selected surfaces of the insert are implanted with a harder grade of tungsten carbide and sintered thereto. The special insert then would find application in the gage row of, for example, a roller cone rock bit.