Dynamic seal with soft interface

Details Dynamic seal with soft interface Dynamic seal with soft interface

2006-10-10

2006-10-10

Bagnell, David (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C175S372000, C277S406000, C277S404000

Reexamination Certificate

active

07117961

ABSTRACT:
A device and method for dynamically sealing between rotatable members such as a rolling cone of a rock bit. The assembly includes a seal ring having a facing surface of a relatively hard material, such as hardened steel or tungsten carbide, and a second seal ring of a softer material, the softer material being harder, however, than typical elastomers. Suitable materials for the relatively soft seal ring include tin, copper, aluminum, magnesium, lead and alloys thereof, as well as non-metallic materials such as nylon-zytel, acetal, and polypropylene. The relatively soft seal ring may be affixed to a third seal ring or maybe affixed directly to the cone steel, for example. The seal assembly provides potential for longer life relative to elastomeric seals and requires less axial space along the journal surfaces than certain conventional metal seal assemblies.

REFERENCES:
patent: 1756285 (1930-04-01), Decker
patent: 2373352 (1945-04-01), Smart
patent: 3268312 (1966-08-01), Grant
patent: 3280027 (1966-10-01), Owens et al.
patent: 3394939 (1968-07-01), Mastro
patent: 3655425 (1972-04-01), Longo et al.
patent: 3761145 (1973-09-01), Schumacher, Jr.
patent: 3941903 (1976-03-01), Tucker, Jr.
patent: 3990525 (1976-11-01), Penny
patent: 4172502 (1979-10-01), Van Nederveen
patent: 4176848 (1979-12-01), Lafuze
patent: 4179003 (1979-12-01), Cooper et al.
patent: 4199156 (1980-04-01), Oldham et al.
patent: 4248484 (1981-02-01), Newcomb
patent: 4249622 (1981-02-01), Dysart
patent: 4252330 (1981-02-01), Crow
patent: 4256351 (1981-03-01), Langford, Jr.
patent: 4359111 (1982-11-01), Gonzalez
patent: 4367904 (1983-01-01), Olschewski et al.
patent: 4394020 (1983-07-01), Oelke
patent: 4428588 (1984-01-01), Oelke
patent: 4429854 (1984-02-01), Kar et al.
patent: 4466621 (1984-08-01), Garner et al.
patent: 4466622 (1984-08-01), Deane et al.
patent: 4516641 (1985-05-01), Burr
patent: 4613005 (1986-09-01), Olsson
patent: 4629338 (1986-12-01), Ippolito
patent: 4666001 (1987-05-01), Burr
patent: 4671368 (1987-06-01), Burr
patent: 4722404 (1988-02-01), Evans
patent: 4747604 (1988-05-01), Nakamura
patent: 4753303 (1988-06-01), Burr
patent: 4753304 (1988-06-01), Kelly, Jr.
patent: 4762189 (1988-08-01), Tatum
patent: 4813502 (1989-03-01), Dysart
patent: 4822057 (1989-04-01), Chia et al.
patent: 4824123 (1989-04-01), Chia et al.
patent: 4838365 (1989-06-01), Kotch
patent: 4903786 (1990-02-01), Welsh
patent: 4923020 (1990-05-01), Kelly, Jr. et al.
patent: 5005989 (1991-04-01), Karlsson
patent: 5009519 (1991-04-01), Tatum
patent: 5027911 (1991-07-01), Dysart
patent: 5040624 (1991-08-01), Schumacher et al.
patent: 5080183 (1992-01-01), Schumacher et al.
patent: 5295549 (1994-03-01), Dolezal et al.
patent: 5360076 (1994-11-01), Kelly, Jr. et al.
patent: 5362073 (1994-11-01), Upton et al.
patent: 5392692 (1995-02-01), Rao et al.
patent: 5472058 (1995-12-01), Hooper et al.
patent: 5791421 (1998-08-01), Lin
patent: 5875861 (1999-03-01), Daly et al.
patent: 6026917 (2000-02-01), Zahradnik et al.
patent: 6033117 (2000-03-01), Cariveau et al.
patent: 6068070 (2000-05-01), Scott
patent: 6109376 (2000-08-01), Pearce
patent: 6123337 (2000-09-01), Fang et al.
patent: 6142249 (2000-11-01), Zahradnik et al.
patent: 6170830 (2001-01-01), Cawthorne et al.
patent: 6176330 (2001-01-01), Burr
patent: 6179296 (2001-01-01), Cawthorne et al.
patent: 6196339 (2001-03-01), Portwood et al.
patent: 6247545 (2001-06-01), Burr et al.
patent: 6254275 (2001-07-01), Slaughter, Jr. et al.
patent: 6257589 (2001-07-01), Flaherty et al.
patent: 6270081 (2001-08-01), Onoda et al.
patent: 6427790 (2002-08-01), Burr
patent: 6536542 (2003-03-01), Fang et al.
patent: 6598690 (2003-07-01), Peterson
patent: 6684966 (2004-02-01), Lin et al.
patent: 2003/0109646 (2003-06-01), Kubo et al.
patent: 2005/0274549 (2005-12-01), Yong et al.
patent: 2005/0274550 (2005-12-01), Yu et al.
patent: 0335497 (1989-10-01), None
patent: WO01/33117 (2001-05-01), None
Search Report for Appln. No. GB0416619.5.8, dated Apr. 11, 2004; (1 p.).

Affiliated with

Also associated with

Rating

Dynamic seal with soft interface does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3689864