CN203335403U - 一种用于罗茨泵驱动端的间隙自适应混合型双重密封结构 - Google Patents
一种用于罗茨泵驱动端的间隙自适应混合型双重密封结构 Download PDFInfo
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103075347A (zh) * | 2013-01-19 | 2013-05-01 | 上海零澜机械科技有限公司 | 一种用于罗茨泵驱动端的间隙自适应混合型双重密封结构 |
CN110594156A (zh) * | 2019-09-23 | 2019-12-20 | 兑通真空技术(上海)有限公司 | 一种三轴多级罗茨泵的驱动结构 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103075347A (zh) * | 2013-01-19 | 2013-05-01 | 上海零澜机械科技有限公司 | 一种用于罗茨泵驱动端的间隙自适应混合型双重密封结构 |
CN110594156A (zh) * | 2019-09-23 | 2019-12-20 | 兑通真空技术(上海)有限公司 | 一种三轴多级罗茨泵的驱动结构 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI ELIVAC VACUUM TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANGHAI ELIVAC COMPANY, LTD. |
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CP01 | Change in the name or title of a patent holder |
Address after: Baihe Town, Qingpu District, Shanghai city 2963 201709 waiqingsong Highway No. 2 Lane 6 Building second layer Patentee after: ELIVAC Co.,Ltd. Patentee after: Xiao ran Address before: Baihe Town, Qingpu District, Shanghai city 2963 201709 waiqingsong Highway No. 2 Lane 6 Building second layer Patentee before: Shanghai ELIVAC Co.,Ltd. Patentee before: Xiao Ran |
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CX01 | Expiry of patent term |
Granted publication date: 20131211 |
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CX01 | Expiry of patent term |