发明授权
- 专利标题： Vacuum device
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申请号： US16922062申请日： 2020-07-07
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公开(公告)号： US11668305B2公开(公告)日： 2023-06-06
- 发明人: Steffen Herrmann
- 申请人： PFEIFFER VACUUM GMBH
- 申请人地址： DE Asslar
- 专利权人： PFEIFFER VACUUM GMBH
- 当前专利权人： PFEIFFER VACUUM GMBH
- 当前专利权人地址： DE Asslar
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： EP 186221 2019.07.15
- 主分类号： F04C25/02
- IPC分类号： F04C25/02 ; F04C29/02 ; B01D3/10 ; F04B39/16 ; F04B53/04 ; F04C27/00
摘要：
A vacuum device, in particular to a vacuum pump, includes a reservoir for an operating medium; an outlet connector arranged at or in the reservoir; and a selection device that selectively closes or opens the outlet connector or an outlet line, which is connected via the outlet connector to the reservoir, in dependence on whether the operating medium or water is present at the outlet connector.
公开/授权文献
- US20210017990A1 VACUUM DEVICE 公开/授权日：2021-01-21
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