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Machine translation
1. (WO1998053231) SEALED DRIVE SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1998/053231    International Application No.:    PCT/GB1998/001376
Publication Date: 26.11.1998 International Filing Date: 14.05.1998
IPC:
F16J 15/43 (2006.01)
Applicants: ADVANCED FLUID SYSTEMS LIMITED [GB/GB]; Pensbury Industrial Estate Units 10-14 Pensbury Street Wandsworth London SW8 4TJ (GB) (For All Designated States Except US).
BROOKS, Douglas, Alan [GB/GB]; (GB) (For US Only).
BOGUSLAVSKIY, Vadim [US/US]; (US) (For US Only)
Inventors: BROOKS, Douglas, Alan; (GB).
BOGUSLAVSKIY, Vadim; (US)
Agent: PEARCE, Anthony, Richmond; Marks & Clerk Alpha Tower Suffolk Street Queensway Birmingham B1 1TT (GB)
Priority Data:
9710050.7 16.05.1997 GB
Title (EN) SEALED DRIVE SYSTEM
(FR) SYSTEME D'ENTRAINEMENT HERMETIQUEMENT FERME
Abstract: front page image
(EN)A sealed drive system for transferring rotary motion into a vacuum chamber is disclosed. The system has a housing (14) with a flange secured to a wall (10) of the chamber around an aperture (12) in the wall. The housing (14) houses at least one bearing (18, 20), and a rotary shaft (24) having an end (26) which passes through the aperture (12) in the chamber wall (10). The housing (14) further houses at least one magnetic circuit including a magnetic fluid (38) which forms a seal around the rotary shaft (24). In order to provide a particularly compact arrangement, the housing (14) also houses an electric motor (44) which is arranged to rotate the shaft (24).
(FR)Ce système d'entraînement hermétiquement fermé permet de transférer à l'intérieur d'une chambre à vide un mouvement de rotation. Le système comporte un carter (14) dont une bride est solidarisée d'une paroi (10) de la chambre autour d'un orifice (12) de la paroi. Le carter (14) renferme au moins un palier (18, 20). Une extrémité (26) d'un arbre de rotation (24) traverse l'orifice (12) ménagé dans la paroi (10) de la chambre. Le carter (14) renferme également au moins un circuit magnétique comprenant un fluide magnétique (38) qui vient constituer un joint étanche autour de l'arbre de rotation (24). Le carter (14) renferme enfin également un moteur électrique (44) monté de façon à animer la rotation de l'axe (24), ce qui permet de construire un ensemble relativement compact.
Designated States: JP, KR, US.
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: English (EN)
Filing Language: English (EN)