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. 14, 1990
Filed:
Mar. 10, 1989
Applicant:
Inventor:
Nigel D Griffin, Whitminster, GB;
Assignee:
Reed Tool Company Limited, , GB;
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
175409 ; 175374 ; 175410 ; 51309 ; 76DI / ; 761082 ; 761084 ;
Abstract
A cutter assembly, for a rotary drill bit, comprises a preform cutting element mounted on a carrier in the form of a stud or post received in a socket in the bit body. The carrier is a metal matrix composite, formed by sintering, hot-pressing or by an infiltration process, and comprising tungsten metal particles in a metal binder phase, or a mixture of tungsten metal particles and tungsten carbide particles in a metal binder phase.