Nigel Dennis Griffin

TL;DR: In this article, a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength is presented, which translates to higher wear resistance in cutting applications and higher heat transfer capacity in heat sink applications.

TL;DR: In this article, a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength is described, where the diamond matrix table is formed and integrally bonded with a metallic substrate containing the catalyzing material during the HTHP process.

TL;DR: In this article, a preform cutting element for a rotary drill bit and a prefrom cutting elements including a facing table of super-hard material having a front face, a rear surface is bonded to the front surface of a substrate which is less hard than the superhard material and has a rim or edge area at least partially covered by a metallic material different from the substrate material.

TL;DR: In this paper, formation engaging elements are moveable mounted onto a drill bit and used to protect other rigidly mounted engaging elements from impacts that occur during use of the drill bit, or they may be used to alter the aggressiveness when used in directional drilling operations.

TL;DR: A PCD cutting element, which in operation and as it wears to a worn condition, presents at least two cutting lips to the material being cut, is a particularly advantageous use of this new PDC cutting element is as cutting elements for earth boring drill bits.