Cutting element having diamond cutting blank reinforced by a sho

Details Cutting element having diamond cutting blank reinforced by a sho Cutting element having diamond cutting blank reinforced by a sho

1986-12-29

1988-03-01

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, E21B 1046

Patent

active

047279451

ABSTRACT:
A cutting element includes a stud having an inclined supporting surface. The supporting surface intersects a side surface of the stud to form an edge. A cutting member is bonded to the supporting surface. A reinforcing shoulder projects from the supporting surface adjacent a rear portion of the cutting member. The shoulder includes a side surface, a portion of which intersects the edge along a region of the edge whose forwardmost point is spaced rearwardly from a rearwardmost point of the cutting member. When the cutting element is positioned within a bore of a drill bit, that region of the edge is completely positioned within the bore so as to be reinforced by the bore wall.

REFERENCES:
patent: 4156329 (1979-05-01), Daniels et al.
patent: 4373410 (1983-02-01), Davis
patent: 4520881 (1985-06-01), Phaal
patent: 4632196 (1986-12-01), Dennis

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