Screw vacuum pump with rotors,申请号DE19971045615-传众专利搜索

发明名称	Screw vacuum pump with rotors
摘要	Each of the rotors (5) has at least two sections (17,18) with different rotor profiles (19,20). The suction side section has a greater diameter than the pressure-side section. The suction-side section is produced with a greater tolerance than the pressure-side section. Rotor cooling apparatus is situated in a bearing-side open cavity (31) in the rotor.
申请公布号	DE19745615(A1)	申请公布日期	1999.04.15
申请号	DE19971045615	申请日期	1997.10.10
申请人	LEYBOLD VAKUUM GMBH, 50968 KOELN, DE	发明人	BAHNEN, RUDOLF, DR., 52159 ROETGEN, DE;DREIFERT, THOMAS, DR., 50996 KOELN, DE
分类号	F04C18/16;F04C18/08;F04C23/00;F04C25/02;F04C28/26;F04C29/00;F04C29/04;(IPC1-7):F04C25/00	主分类号	F04C18/16
代理机构		代理人
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