04186628 is referenced by 121 patents and cites 4 patents.

A rotary rock drill bit comprising a plurality of cutting elements or cutters mounted in the crown of the drill bit. Each cutting element comprises a thin planar layer of polycrystalline diamond bonded in the crown of the bit at a rake angle of between -10.degree. and -25.degree.. In another embodiment each cutting element comprises an elongated pin mounted at one end in the drill crown and thin layer of polycrystalline diamond bonded to the free end of the pin so as to be disposed at a rake angle of between -10.degree. and -25.degree..

Title
Rotary drill bit and method for making same
Application Number
746044
Publication Number
4186628
Application Date
March 20, 1978
Publication Date
February 5, 1980
Inventor
Phillip E Bonnice
Worthington
OH, US
Agent
Morgan Finnegan Pine Foley & Lee
Assignee
General Electric Company
OH, US
IPC
B21K 5/02
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