Title (en)

Turbomolecular pump

Title (de)

Turbomolekularpumpe

Title (fr)

Pompe turbomoléculair

Publication

EP 0979947 A3 20010328 (EN)

Application

EP 99306359 A 19990811

Priority

JP 22792298 A 19980812

Abstract (en)

[origin: EP0979947A2] A turbomolecular pump is provided in which the structure of a stator blade (20) is improved for cooling rotor blades (2), thereby achieving a higher thermal conduction efficiency. The arrangement provides contact surfaces of the stator blades (20) and stator blade spacers (22) to be engaged/crushed upon assembling the pump. <IMAGE> <IMAGE>

IPC 1-7

F04D 19/04; F04D 29/58

IPC 8 full level

F04D 29/00 (2006.01); F04D 19/04 (2006.01); F04D 29/58 (2006.01)

CPC (source: EP KR)

F04D 19/042 (2013.01 - EP); F04D 29/00 (2013.01 - KR); F04D 29/542 (2013.01 - EP); F04D 29/5853 (2013.01 - EP)

Citation (search report)

• [A] US 4695223 A 19870922 - CASPAR HANS-PETER [DE], et al
• [X] PATENT ABSTRACTS OF JAPAN vol. 017, no. 168 (M - 1391) 31 March 1993 (1993-03-31)
• [A] PATENT ABSTRACTS OF JAPAN vol. 012, no. 347 (M - 743) 19 September 1988 (1988-09-19)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0979947 A2 20000216; EP 0979947 A3 20010328; JP 2000064986 A 20000303; KR 20000017282 A 20000325

DOCDB simple family (application)

EP 99306359 A 19990811; JP 22792298 A 19980812; KR 19990033123 A 19990812