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1. (WO2005033521) VACUUM PUMP
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2005/033521 International Application No.: PCT/GB2004/004114
Publication Date: 14.04.2005 International Filing Date: 23.09.2004
IPC:
F04D 19/04 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
19
Axial-flow pumps specially adapted for elastic fluids
02
Multi-stage pumps
04
specially adapted to the production of a high vacuum, e.g. molecular pumps
Applicants: STONES, Ian, David[GB/GB]; GB (UsOnly)
GOODWIN, David, John[GB/GB]; GB (UsOnly)
THE BOC GROUP PLC[GB/GB]; Chertsey Road Windlesham Surrey GU20 6HJ, GB (AllExceptUS)
Inventors: STONES, Ian, David; GB
GOODWIN, David, John; GB
Agent: BOOTH, Andrew, Steven; The Boc Group plc Chertsey Road Windlesham Surrey GU20 6HJ, GB
Priority Data:
0322883.030.09.2003GB
Title (EN) VACUUM PUMP
(FR) POMPE A VIDE
Abstract:
(EN) A vacuum pump comprises a first pumping section (106), and, downstream therefrom, a second pumping section (108), The pump comprises a first pump inlet (120) through which fluid can enter the pump and pass through both the first and second pumping sections towards a pump outlet, and a second pump inlet (122) through which fluid can enter the pump and pass through only the second pumping section towards the outlet. The second pumping section (108) comprises an externally threaded rotor (109).
(FR) L'invention concerne une pompe à vide comprenant une première section de pompage (106) et une seconde section de pompage (108) en aval de la première. Cette pompe comprend par ailleurs une première entrée (120) par laquelle un fluide peut pénétrer dans la pompe et passer à travers la première et la seconde section de pompage en direction d'une sortie, ainsi qu'une seconde entrée (122) par laquelle un fluide peut pénétrer dans la pompe et passer à travers uniquement la seconde section de pompage en direction de la sortie. La seconde section de pompage (108) comprend un rotor à filetage externe (109).
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)