Transistion layer polycrystalline diamond bearing

Details Transistion layer polycrystalline diamond bearing Transistion layer polycrystalline diamond bearing

1986-05-19

1988-03-08

Leppink, James A.

Boring or penetrating the earth

With below-ground tool drive prime mover

Fluid rotary type

51293, 175329, 175371, 384 95, 3849071, E21B 402, E21B 1022

Patent

active

047294400

ABSTRACT:
An earth boring apparatus is disclosed having bearing members comprised of transition layer polycrystalline diamond. The transition layer polycrystalline diamond bearings include a polycrystalline diamond layer interfaced with a composite transition layer comprising a mixture of diamond crystals and precemented carbide pieces subjected to high temperature/high pressure conditions so as to form polycrystalline diamond material bonded to the precemented carbide pieces. The polycrystalline diamond layer acts as the bearing surface. The transition layer bearings are preferably supported by a cemented tungsten carbide substrate interfaced with the transition layer.

REFERENCES:
patent: T102901 (1983-04-01), Offenbacher
patent: 3745623 (1973-07-01), Wentorf
patent: 4029368 (1977-06-01), Tschirky
patent: 4190301 (1980-02-01), Lachonius et al.
patent: 4215999 (1980-08-01), Phaal
patent: 4229186 (1980-10-01), Wilson
patent: 4252102 (1981-02-01), Phaal
patent: 4255165 (1981-03-01), Dennis
patent: 4260203 (1981-04-01), Garner
patent: 4303442 (1981-12-01), Hara
patent: 4345798 (1982-08-01), Cortes
patent: 4370149 (1983-01-01), Hara
patent: 4410054 (1983-10-01), Nagel et al.
patent: 4411672 (1983-10-01), Ishizuka
patent: 4525178 (1985-06-01), Hall
patent: 4560014 (1985-12-01), Geczy
patent: 4604106 (1986-08-01), Hall

Affiliated with

Also associated with

Rating

Transistion layer polycrystalline diamond bearing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transistion layer polycrystalline diamond bearing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transistion layer polycrystalline diamond bearing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-227276