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:
Sep. 12, 2006
Filed:
Dec. 18, 2001
Robert Fries, Johannesburg, ZA;
Iakovos Sigalas, Linden, ZA;
Robert Fries, Johannesburg, ZA;
Iakovos Sigalas, Linden, ZA;
Other;
Abstract
A method for producing a cutting tool such a twist grill, end mill, or the like. The method provides an unbonded assembly including a cylindrical core having ends and an elongate side surface covered partially or completely by a coherent, unsintered layer including ultra-hard abrasive particles for producing an ultra-hard material. The unbonded assembly is subjected to elevated temperature and pressure conditions at which the ultra-hard abrasive is crystographically stable. The sintered product is then recovered that includes a cylindrical core and a layer of ultra-hard abrasive material bonded to the core, and the sintered product is worked to produce one or more cutting edges in the layer of ultra-hard abrasive material.