发明名称 Gas friction pump
摘要 A gas friction pump includes stationary ( 6 ) and rotatable ( 5 ) pump-active elements secured on a rotor shaft ( 4 ) and forming with the rotor shaft components of the rotor, with the rotor shaft ( 4 ) being supported by two, spaced from each other, radial bearings ( 8, 9 ), of which one is located closer to the gravity center of the rotor than the other, and an axial bearing ( 16 ), and with the radial bearing ( 9 ), which is located closer to the gravity center of the rotor, being formed as a gas bearing, and another radial bearing ( 8 ) being formed as a non-gas bearing.
申请公布号 US6991424(B2) 申请公布日期 2006.01.31
申请号 US20040773467 申请日期 2004.02.05
申请人 PFEIFFER VACUUM GMBH 发明人 CONRAD ARMIN;STANZEL JOERG
分类号 F04D29/04;F04D29/056;F04D19/04 主分类号 F04D29/04
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