发明授权
- 专利标题： Device for moving gas at subatmospheric pressure
- 专利标题（中）： 用于在低于大气压力下移动气体的装置
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申请号： US111150申请日： 1987-10-20
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公开(公告)号： US4797062A公开(公告)日： 1989-01-10
- 发明人: Ludger Deters , Heinrich Englander , Hans-Peter Kabelitz , Gunter Schutz
- 申请人： Ludger Deters , Heinrich Englander , Hans-Peter Kabelitz , Gunter Schutz
- 申请人地址： DEX Cologne
- 专利权人： Leybold-Heraeus GmbH
- 当前专利权人： Leybold-Heraeus GmbH
- 当前专利权人地址： DEX Cologne
- 优先权： DEX3410905 19840324
- 主分类号： F04D19/04
- IPC分类号： F04D19/04 ; F04D29/58 ; F16J15/40 ; F01D1/36
摘要：
A device for moving a gas at a subatmospheric pressure with a screwthread-like device on at least one of the facing surfaces of a rotor spacedly surrounded axially by a relatively-rotatable stator insulates the stator from a housing for the device to prevent thermal variation of the space between the rotor and stator and, thus, keeping the gas-moving action constant.
公开/授权文献
- USD432383S Handle of precision screwdriver 公开/授权日：2000-10-24
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