DLC coating for earth-boring bit seal ring

Details DLC coating for earth-boring bit seal ring DLC coating for earth-boring bit seal ring

2007-06-26

2007-06-26

Gay, Jennifer H (Department: 3672)

Boring or penetrating the earth

Processes

C175S372000, C175S434000

Reexamination Certificate

active

10223533

ABSTRACT:
An earth-boring bit has a seal assembly with a seal face having a DLC coating. The seal assembly locates between a bearing pin and a cone of the bit. The seal assembly has at least one rigid ring that rotates against a mating surface. The DLC coating is diamond-like carbon that may be coated by different processes onto either the ring, the mating surface, or both.

REFERENCES:
patent: 4753304 (1988-06-01), Kelly, Jr.
patent: 4987007 (1991-01-01), Wagal et al.
patent: 5098737 (1992-03-01), Collins et al.
patent: 5284394 (1994-02-01), Lemelson
patent: 5360076 (1994-11-01), Kelly et al.
patent: 5472058 (1995-12-01), Hooper et al.
patent: 5791421 (1998-08-01), Lin
patent: 6033117 (2000-03-01), Cariveau et al.
patent: 6045029 (2000-04-01), Scott
patent: 6068070 (2000-05-01), Scott
patent: 6209185 (2001-04-01), Scott
patent: 6338881 (2002-01-01), Sellschopp et al.
patent: 6427790 (2002-08-01), Burr
patent: 6450271 (2002-09-01), Tibbitts et al.
patent: 6513607 (2003-02-01), Peterson et al.
patent: 6637528 (2003-10-01), Nishiyama et al.
patent: 2002/0108788 (2002-08-01), Peterson et al.
patent: 2003/0075363 (2003-04-01), Lin et al.
patent: 2278865 (1996-06-01), None
Mechanical Seal Technology,Diamond Seal Facing Extends Life, Improves Reliability, Reduces Friction, Offshore, Jul. 2001.
Azom.com,Diamond-Like Carbon Coatings, http://www.azom.com/details.asp?ArticleID=623, May 29, 2002, pp. 1-7.

Affiliated with

Also associated with

Rating

DLC coating for earth-boring bit seal ring does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with DLC coating for earth-boring bit seal ring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DLC coating for earth-boring bit seal ring will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3851789