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GB9021780D0 - Improvements in mechanical pumps - Google Patents

Improvements in mechanical pumps

Info

Publication number
GB9021780D0
GB9021780D0 GB909021780A GB9021780A GB9021780D0 GB 9021780 D0 GB9021780 D0 GB 9021780D0 GB 909021780 A GB909021780 A GB 909021780A GB 9021780 A GB9021780 A GB 9021780A GB 9021780 D0 GB9021780 D0 GB 9021780D0
Authority
GB
United Kingdom
Prior art keywords
mechanical pumps
pumps
mechanical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB909021780A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOC Group Ltd
Original Assignee
BOC Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOC Group Ltd filed Critical BOC Group Ltd
Priority to GB909021780A priority Critical patent/GB9021780D0/en
Publication of GB9021780D0 publication Critical patent/GB9021780D0/en
Priority to EP91309065A priority patent/EP0480629A1/de
Priority to JP25808991A priority patent/JPH04259691A/ja
Pending legal-status Critical Current

Links

GB909021780A 1990-10-06 1990-10-06 Improvements in mechanical pumps Pending GB9021780D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB909021780A GB9021780D0 (en) 1990-10-06 1990-10-06 Improvements in mechanical pumps
EP91309065A EP0480629A1 (de) 1990-10-06 1991-10-03 Verbesserungen an mechanischen Pumpen
JP25808991A JPH04259691A (ja) 1990-10-06 1991-10-04 メカニカルポンプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909021780A GB9021780D0 (en) 1990-10-06 1990-10-06 Improvements in mechanical pumps

Publications (1)

Publication Number Publication Date
GB9021780D0 true GB9021780D0 (en) 1990-11-21

Family

ID=10683354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB909021780A Pending GB9021780D0 (en) 1990-10-06 1990-10-06 Improvements in mechanical pumps

Country Status (3)

Country Link
EP (1) EP0480629A1 (de)
JP (1) JPH04259691A (de)
GB (1) GB9021780D0 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000205148A (ja) * 1999-01-11 2000-07-25 Toyota Autom Loom Works Ltd 多段ル―ツポンプ及び多段ル―ツポンプのロ―タハウジング製作方法
GB0319344D0 (en) * 2003-08-18 2003-09-17 Boc Group Plc Reducing exhaust pulsation in dry pumps
GB2498807A (en) 2012-01-30 2013-07-31 Edwards Ltd Multi-stage vacuum pump with solid stator
DE202014007117U1 (de) * 2014-09-05 2015-12-09 Oerlikon Leybold Vacuum Gmbh Klauenpumpe
CN109113998A (zh) * 2018-09-18 2019-01-01 世通海泰泵业（天津）股份有限公司 抽真空用驱动装置
FR3107933B1 (fr) * 2020-03-04 2022-03-04 Pfeiffer Vacuum Technology AG Pompe à vide sèche et procédé de fabrication
CN111692092B (zh) * 2020-05-25 2022-11-29 温州市格东机械有限公司 凸轮转子泵
CN116753167B (zh) * 2023-04-19 2024-04-02 北京通嘉宏瑞科技有限公司 转子及真空泵
JP2025023725A (ja) * 2023-08-04 2025-02-17 三菱重工業株式会社 クロー圧縮機及びその組立方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1531607A (en) * 1923-01-24 1925-03-31 Thomas W Green High-pressure rotary pump
GB770475A (en) * 1954-10-29 1957-03-20 Frank Berry Improvements in or relating to rotary devices of the rotary abutment type
DE1243816B (de) * 1959-11-04 1967-07-06 Leybolds Nachfolger E Mehrstufige Drehkolbenvakuumpumpe vom Rootstyp
US3545888A (en) * 1968-09-16 1970-12-08 Edwards High Vacuum Int Ltd Multistage rotary pumps
US3922117A (en) * 1972-11-10 1975-11-25 Calspan Corp Two-stage roots type compressor
GB2091344B (en) * 1981-01-20 1984-11-07 Itt Fluid Handling Ltd Multi-stage pump
US4531535A (en) * 1982-11-26 1985-07-30 General Electric Co. Flow divider

Also Published As

Publication number Publication date
EP0480629A1 (de) 1992-04-15
JPH04259691A (ja) 1992-09-16

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