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. 30, 2000
Filed:
Feb. 20, 1997
Applicant:
Inventor:
Stephen R Jurewicz, Los Angeles, CA (US);
Assignee:
U.S. Synthetic Corporation, Orem, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175432 ; 175434 ;
Abstract
Polycrystalline diamond cutter (PDC) designs which substantially improve the penetration rate of fixed cutter drill bits while simultaneously reducing the wear on the bit during drilling operations are disclosed. The designs are based upon the observation that: 1) the wear pattern of a PDC is roughly a conic section and is parallel to bit rotation, and 2) the cutting surface is perpendicular to the rotation of the bit. The inventive PDC designs provide cutting action both perpendicular and parallel to the direction of bit rotation.