GB1459933A - High vacuum molecular pump procedure and apparatus for wind measurement wherein the position or velocity vector of a meteorological observaton - Google Patents

High vacuum molecular pump procedure and apparatus for wind measurement wherein the position or velocity vector of a meteorological observaton

Info

Publication number
GB1459933A
GB1459933A GB1167374A GB1167374A GB1459933A GB 1459933 A GB1459933 A GB 1459933A GB 1167374 A GB1167374 A GB 1167374A GB 1167374 A GB1167374 A GB 1167374A GB 1459933 A GB1459933 A GB 1459933A
Authority
GB
United Kingdom
Prior art keywords
high vacuum
molecular pump
groove
observaton
meteorological
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.)
Expired
Application number
GB1167374A
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
Compagnie Industrielle de Telecommunication CIT Alcatel SA
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 Alcatel CIT SA, Compagnie Industrielle de Telecommunication CIT Alcatel SA filed Critical Alcatel CIT SA
Publication of GB1459933A publication Critical patent/GB1459933A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
    • F04D19/044—Holweck-type pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
GB1167374A 1973-03-21 1974-03-15 High vacuum molecular pump procedure and apparatus for wind measurement wherein the position or velocity vector of a meteorological observaton Expired GB1459933A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7310183A FR2222886A5 (xx) 1973-03-21 1973-03-21

Publications (1)

Publication Number Publication Date
GB1459933A true GB1459933A (en) 1976-12-31

Family

ID=9116654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1167374A Expired GB1459933A (en) 1973-03-21 1974-03-15 High vacuum molecular pump procedure and apparatus for wind measurement wherein the position or velocity vector of a meteorological observaton

Country Status (10)

Country Link
US (1) US3912415A (xx)
JP (1) JPS49128306A (xx)
BE (1) BE812288A (xx)
CH (1) CH579219A5 (xx)
DE (1) DE2411247C2 (xx)
FR (1) FR2222886A5 (xx)
GB (1) GB1459933A (xx)
IT (1) IT1014568B (xx)
NL (1) NL7403784A (xx)
SU (1) SU667162A3 (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2585936A (en) * 2019-07-25 2021-01-27 Edwards Ltd Drag pump

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8105614A (nl) * 1981-12-14 1983-07-01 Ultra Centrifuge Nederland Nv Hoog-vacuum moleculair pomp.
US4708586A (en) * 1985-08-14 1987-11-24 Rikagaku Kenkyusho Thread groove type vacuum pump
JPS6238899A (ja) * 1985-08-14 1987-02-19 Osaka Shinku Kiki Seisakusho:Kk ねじ溝式真空ポンプ
JPS6351195U (xx) * 1986-09-20 1988-04-06
JPH06205706A (ja) * 1992-12-09 1994-07-26 Ciba Geigy Ag コンタクトレンズケース
EP4194700A1 (de) * 2023-04-18 2023-06-14 Pfeiffer Vacuum Technology AG Vakuumpumpe mit einer holweck-pumpstufe mit veränderlicher holweck-geometrie

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR536278A (fr) * 1921-06-01 1922-04-29 Pompe hélicoïdale pour vides élevés
US1492846A (en) * 1922-05-11 1924-05-06 Mullard Radio Valve Co Ltd Vacuum pump
FR1293546A (fr) * 1961-02-09 1962-05-18 Alsacienne Constr Meca Perfectionnements aux pompes moléculaires rotatives
US3697190A (en) * 1970-11-03 1972-10-10 Walter D Haentjens Truncated conical drag pump
DE2118738C3 (de) * 1971-04-17 1974-11-14 Dornier Dmbh, 7990 Friedrichshafen Molekularpumpe, bestehend aus einem mit Innengewinde versehenen zylindrischen Stator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2585936A (en) * 2019-07-25 2021-01-27 Edwards Ltd Drag pump
US11971041B2 (en) 2019-07-25 2024-04-30 Edwards Limited Drag pump

Also Published As

Publication number Publication date
DE2411247C2 (de) 1983-03-24
DE2411247A1 (de) 1974-09-26
JPS49128306A (xx) 1974-12-09
IT1014568B (it) 1977-04-30
FR2222886A5 (xx) 1974-10-18
SU667162A3 (ru) 1979-06-05
US3912415A (en) 1975-10-14
CH579219A5 (xx) 1976-08-31
NL7403784A (xx) 1974-09-24
BE812288A (fr) 1974-09-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee