Shaft sealing module for sealing vacuum chambers

Details Shaft sealing module for sealing vacuum chambers Shaft sealing module for sealing vacuum chambers

2006-08-15

2006-08-15

Patel, Vishal (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

C277S552000, C277S558000, C277S571000, C277S913000

Reexamination Certificate

active

07090223

ABSTRACT:
A shaft sealing module is proposed for sealing a shaft which extends driving rotationally from a normal pressure chamber into a high vacuum chamber. It is essential for the shaft sealing module according to the invention that the dynamic seal of the shaft takes place not on the shaft itself but on a bushing mounted rotatably in a housing through which is guided a shaft and which is held on the shaft in friction connection, statically sealed, by elastic rings so that the bushing rotates with the shaft. The dynamic seal between the bushing and the housing is achieved by several radial shaft sealing rings which are preferably arranged so that between them is provided a prevacuum chamber with intermediate evacuation so that a two-stage dynamic seal is provided, where the prevacuum acts on the static seal between the bushing and the shaft in the sense of a gas penetration barrier towards the high vacuum chamber.

REFERENCES:
patent: 4136887 (1979-01-01), Wentworth, Jr.
patent: 4448426 (1984-05-01), Jackowski et al.
patent: 4596394 (1986-06-01), Schmitt
patent: 5117066 (1992-05-01), Balsells
patent: 5375933 (1994-12-01), Mizutani et al.
patent: 5709544 (1998-01-01), Wurtz
patent: 6296255 (2001-10-01), Hashimoto
patent: 2002/0047242 (2002-04-01), Watanabe et al.

Affiliated with

Also associated with

Rating

Shaft sealing module for sealing vacuum chambers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shaft sealing module for sealing vacuum chambers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shaft sealing module for sealing vacuum chambers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3659332