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:
Oct. 06, 1987
Filed:
Dec. 16, 1981
John M Ohno, Plymouth, MI (US);
General Electric Company, Detroit, MI (US);
Abstract
A cutting insert is provided with at least one crystal portion containing a first concentration of super-hard crystals, such as diamond or cubic boron nitride crystals, and core portion. The crystal portion and the core portion are united by amatrix of .beta.-silicon carbide and silicon and exclusively form a composite having an approximate thickness of at least 1/8 inch, thus obviating the need for bonding the cutting insert onto a carbide substrate. Additional crystal layers, having a concentration of crystals less than that of the first crystal layer, may be provided, the crystal and core layers being configured in a number of different configurations in order to optimize particular machining requirements.