Shaft sealing apparatus

Details Shaft sealing apparatus Shaft sealing apparatus

2006-06-06

2006-06-06

Patel, Vishal (Department: 3679)

Seal for a joint or juncture

Seal between relatively movable parts

Diverse and distinct dynamic seals

C277S353000, C277S549000, C277S572000, C277S576000

Reexamination Certificate

active

07055825

ABSTRACT:
Herein disclosed is a shaft sealing apparatus which comprises a vacuum casing formed with a vacuum chamber, a driving shaft having an outer cylindrical surface and movably extending in the vacuum chamber of the vacuum casing, and a sealing ring in the form of an annular ring shape and including a sealing lip held in contact with the outer cylindrical surface of the driving shaft, an annular spring member operative to impart a force to the sealing lip to ensure that the sealing lip is held in tight contact with the outer cylindrical surface of the driving shaft, and a peripheral portion radially outwardly extending from the sealing lip, in which the outer cylindrical surface of the driving shaft is smaller in surface roughness Ra than 0.1 (μm).

REFERENCES:
patent: 2804325 (1957-08-01), Riesing
patent: 3128887 (1964-04-01), Guennec et al.
patent: 3347604 (1967-10-01), Lavelle et al.
patent: 3383117 (1968-05-01), Fagel et al.
patent: 3495843 (1970-02-01), Anderson et al.
patent: 3811658 (1974-05-01), Heidrich
patent: 4133542 (1979-01-01), Janian et al.
patent: 4331339 (1982-05-01), Reinsma
patent: 4383691 (1983-05-01), Potter
patent: 4437821 (1984-03-01), Ogawa
patent: 4573690 (1986-03-01), DeHart et al.
patent: 4586718 (1986-05-01), Stephenson et al.
patent: 4943068 (1990-07-01), Hatch et al.
patent: 5054440 (1991-10-01), Kadokawa
patent: 5232355 (1993-08-01), Fujii et al.
patent: 5343313 (1994-08-01), Fergason
patent: 5414316 (1995-05-01), Michel et al.
patent: 5671656 (1997-09-01), Cyphers et al.
patent: 5676472 (1997-10-01), Solomon et al.
patent: 5853502 (1998-12-01), Aihara et al.
patent: 5984316 (1999-11-01), Balsells
patent: 6022484 (2000-02-01), Bleck et al.
patent: 6168163 (2001-01-01), Thorson et al.
patent: 6257587 (2001-07-01), Toth et al.
patent: 6296225 (2001-10-01), Watts
patent: 6296255 (2001-10-01), Hashimoto
patent: 40 18 278 (1991-12-01), None
patent: 199 51 317 (2000-04-01), None
patent: 0 266 732 (1988-05-01), None
patent: 0 879 977 (1998-11-01), None
patent: 60199544 (1985-10-01), None

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