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. 12, 1996
Filed:
May. 05, 1994
Klaus Tank, Essexwold, Johannesburg, Transvaal, ZA;
Peter N Tomlinson, Mondeor, Johannesburg, Transvaal, ZA;
Trevor J Martell, Tableview, Cape Town, Cape Province, ZA;
Andrew I Lloyd, Parkhurst, Johannesburg, Transvaal, ZA;
Bruce R Olmstead, Mondeor, Johannesburg, Transvaal, ZA;
Other;
Abstract
A composite diamond abrasive compact comprises a diamond compact bonded to a cemented carbide support along a compact/carbide interface and is characterised by the carbide support comprising at least two zones, a first zone containing a binder metal content of a predetermined amount, and a second zone extending from the interface to the first zone and having a binder metal content which is substantially lower than that of the first zone. The second zone has a depth or thickness of no more than 0,75 mm. The binder metal content of the second zone increases from the interface to the first zone in a continuous, non-interrupted manner.