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. 05, 2015
Filed:
Jun. 03, 2011
Olivier Dupont, Saint-Ghislain, BE;
Nuno Da Silva, Brussels, BE;
Olivier Dupont, Saint-Ghislain, BE;
Nuno Da Silva, Brussels, BE;
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
Described herein is a wear indicator () for use in a drill bit or a core head. The wear indicator () comprises an elongate element that forms part of the drill bit. The elongate element has a plurality of numbers () formed along its length, each number () being formed as a void and corresponds to a level of wear in accordance with the IADC dull grading system. As the drill becomes worn, the wear indicator () wears at the same rate to reveal one of the numbers (). The numbers range from '1' to '8' where the number “1” illustrates the least wear and the number “8” indicates the most wear. When unworn, none of the numbers are visible.