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:
May. 22, 2018
Filed:
Jun. 12, 2012
Maweja Kasonde, Oxford, GB;
Robert Fries, Gauteng, ZA;
John James Barry, Clare, IE;
Cornelis Roelof Jonker, Gauteng, ZA;
Maweja Kasonde, Oxford, GB;
Robert Fries, Gauteng, ZA;
John James Barry, Clare, IE;
Cornelis Roelof Jonker, Gauteng, ZA;
Element Sux Abrasives S.A., Luxembourg, LU;
Element Six Limited, County Clare, IE;
Abstract
A tip for twist drill, comprising a super-hard structure joined to a substrate at an interface boundary coterminous with an end of the substrate, the super-hard structure comprising sintered polycrystalline material comprising super-hard grains, the super-hard structure defining a super-hard end surface opposite the interface boundary and a plurality of cutting edges configured for boring into a body in use; the super-hard end surface including a center point or chisel edge, and comprising a plurality of surface regions configured such that respective planes tangential to each of the surface regions are disposed at substantially different angles from the axis of rotation of the tip in use. Precursor constructions for use in manufacturing the tips as well as methods for making the precursor constructions and the tips are disclosed.