Rotary drill bits

Details Rotary drill bits Rotary drill bits

1984-11-30

1989-02-14

Neuder, William P.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, E21B 1046

Patent

active

048040495

ABSTRACT:
The body of a rotary drill bit is formed from a matrix formed by a powder metallurgy process, and a plurality of cutting elements are mounted on the bit body, each cutting element being in the form of a disc of superhard material which is thermally stable at the temperature of formation of the matrix. The front surface of each cutting element is engaged by a holding structure on the bit body in front of the cutting element, the arrangement of the holding structure being such that the resistance provided by the holding structure to forward deflection of the portion of the cutting element opposite the cutting edge is less than the resistance to rearward deflection provided by the surface behind the cutting edge. Bending stresses imparted to the cutting element by rearward deflection thereof in the vicinity of the cutting edge are thereby reduced.

REFERENCES:
patent: 4200159 (1980-04-01), Peschel et al.
patent: 4382477 (1983-05-01), Barr
patent: 4480874 (1984-11-01), Shaw
patent: 4491188 (1985-01-01), Grappendorf

Affiliated with

Also associated with

Rating

Rotary drill bits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rotary drill bits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary drill bits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1361063