BE812288A - IMPROVEMENT OF MOLECULAR VACUUM PUMPS CYLINDRICAL DRUM PUSH - Google Patents

IMPROVEMENT OF MOLECULAR VACUUM PUMPS CYLINDRICAL DRUM PUSH

Info

Publication number
BE812288A
BE812288A BE141990A BE141990A BE812288A BE 812288 A BE812288 A BE 812288A BE 141990 A BE141990 A BE 141990A BE 141990 A BE141990 A BE 141990A BE 812288 A BE812288 A BE 812288A
Authority
BE
Belgium
Prior art keywords
improvement
cylindrical drum
vacuum pumps
molecular vacuum
drum push
Prior art date
Application number
BE141990A
Other languages
French (fr)
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 filed Critical
Publication of BE812288A publication Critical patent/BE812288A/en

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)
BE141990A 1973-03-21 1974-03-14 IMPROVEMENT OF MOLECULAR VACUUM PUMPS CYLINDRICAL DRUM PUSH BE812288A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE812288A true BE812288A (en) 1974-09-16

Family

ID=9116654

Family Applications (1)

Application Number Title Priority Date Filing Date
BE141990A BE812288A (en) 1973-03-21 1974-03-14 IMPROVEMENT OF MOLECULAR VACUUM PUMPS CYLINDRICAL DRUM PUSH

Country Status (10)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8105614A (en) * 1981-12-14 1983-07-01 Ultra Centrifuge Nederland Nv HIGH VACUUM MOLECULAR PUMP.
JPS6238899A (en) * 1985-08-14 1987-02-19 Osaka Shinku Kiki Seisakusho:Kk Spiral groove type vacuum pump
US4708586A (en) * 1985-08-14 1987-11-24 Rikagaku Kenkyusho Thread groove type vacuum pump
JPS6351195U (en) * 1986-09-20 1988-04-06
JPH06205706A (en) * 1992-12-09 1994-07-26 Ciba Geigy Ag Contact lens case
GB2585936A (en) 2019-07-25 2021-01-27 Edwards Ltd Drag pump
EP4194700A1 (en) * 2023-04-18 2023-06-14 Pfeiffer Vacuum Technology AG Vacuum pump with a holweck pump stage with variable holweck geometry

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR536278A (en) * 1921-06-01 1922-04-29 Helical pump for high vacuum
US1492846A (en) * 1922-05-11 1924-05-06 Mullard Radio Valve Co Ltd Vacuum pump
FR1293546A (en) * 1961-02-09 1962-05-18 Alsacienne Constr Meca Improvements to rotary molecular pumps
US3697190A (en) * 1970-11-03 1972-10-10 Walter D Haentjens Truncated conical drag pump
DE2118738C3 (en) * 1971-04-17 1974-11-14 Dornier Dmbh, 7990 Friedrichshafen Molecular pump, consisting of a cylindrical stator provided with an internal thread

Also Published As

Publication number Publication date
SU667162A3 (en) 1979-06-05
IT1014568B (en) 1977-04-30
JPS49128306A (en) 1974-12-09
FR2222886A5 (en) 1974-10-18
DE2411247A1 (en) 1974-09-26
GB1459933A (en) 1976-12-31
CH579219A5 (en) 1976-08-31
US3912415A (en) 1975-10-14
NL7403784A (en) 1974-09-24
DE2411247C2 (en) 1983-03-24

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