Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet
Patent
1988-03-16
1989-03-14
Novosad, Stephen J.
Boring or penetrating the earth
Bit or bit element
Magnetized or with magnet
51309, 175374, 175410, 175414, C22C 2908, E21B 1052, E21B 1056
Patent
active
048118010
ABSTRACT:
The present invention is a rock bit insert including a polycrystalline diamond surface on an insert body having a head portion made from a material with elasticity and thermal expansion properties advantageously tailored for use in three types of rock bits, as well as the three types of rock bits made with such inserts. The three types of bits are a roller cone rock bit adapted to be used with mud as the drilling fluid, a roller cone rock bit adapted to be used with air as the drilling fluid, and a percussion rock bit.
REFERENCES:
patent: 4108692 (1978-08-01), Quinlan
patent: 4109737 (1978-08-01), Bovenkerk
patent: 4231438 (1980-11-01), Garner et al.
patent: 4339009 (1982-07-01), Busby
patent: 4368788 (1983-01-01), Drake
patent: 4372404 (1983-02-01), Drake
patent: 4398952 (1983-08-01), Drake
patent: 4411672 (1983-10-01), Ishizuka
patent: 4525178 (1985-06-01), Hall
patent: 4604106 (1986-08-01), Hall et al.
patent: 4694918 (1987-09-01), Hall
patent: 4699227 (1987-10-01), Wardley
patent: 4705124 (1987-11-01), Abrahamson et al.
patent: 4722405 (1988-02-01), Langford, Jr.
patent: 4756373 (1988-07-01), Kane et al.
patent: 4764255 (1988-08-01), Fischer et al.
Campbell Bruce L.
Salesky William J.
Novosad Stephen J.
Smith International Inc.
LandOfFree
Rock bits and inserts therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rock bits and inserts therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rock bits and inserts therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-888800