Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent
1994-08-31
1996-05-07
Dang, Hoang C.
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
277 92, 277235R, 384 94, E21B 1022
Patent
active
055137156
ABSTRACT:
A flat seal (32) for a roller cone rock bit (10) is provided. Flat seal (32) includes a ring-shaped metallic spring (80). Metallic spring (80) has an inner face (88) with an annular inner edge (92) for contacting a sealing surface (72) of a cone (18) in a roller cone rock bit (10). Metallic spring (80) also has outer face (86) with an annular outer edge (90) for contacting a sealing surface (70) of a spindle (16) in the roller cone rock bit (10). Metallic spring (80) has a relaxed axial pitch greater than a clearance (76) between sealing surfaces (70) and (72) of cone (18) and spindle (16). Flat seal (32) also includes an annular inner elastomer shroud (84) disposed on inner face (88) of metallic spring (80) such that the annular inner edge (92) is exposed. Flat seal (32) further includes an annular outer elastomer shroud (82) disposed on outer face (86) of metallic spring (80) such that the annular outer edge (90) is exposed.
REFERENCES:
patent: 3096835 (1963-07-01), Neilson
patent: 3125175 (1964-03-01), Medlock et al.
patent: 3171662 (1965-03-01), Warn et al.
patent: 3370895 (1968-02-01), Cason, Jr.
patent: 3467448 (1969-09-01), Galle
patent: 3480341 (1969-11-01), Hickernell
patent: 3489421 (1970-01-01), Neilson
patent: 3529840 (1970-09-01), Durham et al.
patent: 3604523 (1970-06-01), Lichte
patent: 3656764 (1972-04-01), Robinson
patent: 3739864 (1973-06-01), Cason, Jr. et al.
patent: 3921735 (1975-11-01), Dysart
patent: 3952815 (1976-04-01), Dysart
patent: 4056153 (1977-11-01), Miglierini
patent: 4073548 (1978-02-01), Walters
patent: 4087100 (1978-05-01), Yoshihashi et al.
patent: 4092054 (1978-05-01), Dye
patent: 4098358 (1978-07-01), Klima
patent: 4102419 (1978-07-01), Klima
patent: 4158394 (1979-06-01), Ernst et al.
patent: 4176848 (1979-12-01), Lafuze
patent: 4179003 (1979-12-01), Cooper et al.
patent: 4183416 (1980-01-01), Walters
patent: 4183417 (1980-01-01), Levefelt
patent: 4199856 (1980-04-01), Farrow et al.
patent: 4225144 (1980-09-01), Zitz et al.
patent: 4249622 (1981-02-01), Dysart
patent: 4253710 (1981-03-01), Goodman
patent: 4256193 (1981-03-01), Kunkel et al.
patent: 4258806 (1981-03-01), Kunkel et al.
patent: 4272134 (1981-06-01), Levefelt
patent: 4279450 (1981-07-01), Morris
patent: 4284310 (1981-08-01), Olschewski et al.
patent: 4287957 (1981-09-01), Evans
patent: 4298079 (1981-11-01), Norlander et al.
patent: 4375242 (1983-03-01), Galle
patent: 4386668 (1983-06-01), Parish
patent: 4388984 (1983-06-01), Oelke
patent: 4421184 (1983-12-01), Mullins
patent: 4453836 (1984-06-01), Klima
patent: 4515228 (1985-05-01), Dolezal et al.
patent: 4533003 (1985-08-01), Bailey et al.
patent: 4552233 (1985-11-01), Klima
patent: 4593775 (1986-06-01), Chaney et al.
patent: 4597455 (1986-07-01), Walters et al.
patent: 4610319 (1986-09-01), Kalai
patent: 4610452 (1986-09-01), DiRienz
patent: 4629338 (1986-12-01), Ippolito
patent: 4688651 (1987-08-01), Dysart
patent: 4722404 (1988-02-01), Evans
patent: 4813502 (1989-03-01), Dysart
patent: 4822057 (1989-04-01), Chia et al.
patent: 4865136 (1989-09-01), White
patent: 4942930 (1990-07-01), Millsapps
patent: 4981182 (1991-01-01), Dysart
patent: 5027911 (1991-07-01), Dysart
patent: 5080183 (1992-01-01), Schumacher et al.
patent: 5131480 (1992-07-01), Lockstedt et al.
patent: 5145016 (1992-09-01), Estes
Dang Hoang C.
Dresser Industries Inc.
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