FR887499A - Molecular pump - Google Patents

Molecular pump

Info

Publication number
FR887499A
FR887499A FR887499DA FR887499A FR 887499 A FR887499 A FR 887499A FR 887499D A FR887499D A FR 887499DA FR 887499 A FR887499 A FR 887499A
Authority
FR
France
Prior art keywords
molecular pump
molecular
pump
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
Other languages
French (fr)
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.)
BROWN
BBC Brown Boveri AG Germany
Original Assignee
BROWN
Brown Boveri und Cie AG Germany
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 BROWN, Brown Boveri und Cie AG Germany filed Critical BROWN
Application granted granted Critical
Publication of FR887499A publication Critical patent/FR887499A/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)
FR887499D 1941-11-04 1942-11-04 Molecular pump Expired FR887499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH887499X 1941-11-04

Publications (1)

Publication Number Publication Date
FR887499A true FR887499A (en) 1943-11-15

Family

ID=4545387

Family Applications (1)

Application Number Title Priority Date Filing Date
FR887499D Expired FR887499A (en) 1941-11-04 1942-11-04 Molecular pump

Country Status (1)

Country Link
FR (1) FR887499A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730297A (en) * 1950-04-12 1956-01-10 Hartford Nat Bank & Trust Co High-vacuum molecular pump
FR2550829A1 (en) * 1983-08-16 1985-02-22 Seiko Seiki Kk VERTICAL TURBO-MOLECULAR PUMP
US4893985A (en) * 1987-08-24 1990-01-16 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh Multi-stage molecular pump
EP0363503A1 (en) * 1988-10-10 1990-04-18 Leybold Aktiengesellschaft Pump stage for a high vacuum pump
EP0408791A1 (en) * 1989-07-20 1991-01-23 Leybold Aktiengesellschaft Drag pump with a bell-shaped rotor
FR2657655A1 (en) * 1990-01-26 1991-08-02 Hitachi Koki Kk Vacuum pump with helically threaded cylinders
EP0464292A1 (en) * 1990-07-06 1992-01-08 Alcatel Cit Second stage mechanical vacuum pumping unit and leak detection system using such a unit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730297A (en) * 1950-04-12 1956-01-10 Hartford Nat Bank & Trust Co High-vacuum molecular pump
FR2550829A1 (en) * 1983-08-16 1985-02-22 Seiko Seiki Kk VERTICAL TURBO-MOLECULAR PUMP
US4893985A (en) * 1987-08-24 1990-01-16 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh Multi-stage molecular pump
EP0363503A1 (en) * 1988-10-10 1990-04-18 Leybold Aktiengesellschaft Pump stage for a high vacuum pump
EP0408791A1 (en) * 1989-07-20 1991-01-23 Leybold Aktiengesellschaft Drag pump with a bell-shaped rotor
US5165872A (en) * 1989-07-20 1992-11-24 Leybold Aktiengesellschaft Gas friction pump having a bell-shaped rotor
FR2657655A1 (en) * 1990-01-26 1991-08-02 Hitachi Koki Kk Vacuum pump with helically threaded cylinders
US5154572A (en) * 1990-01-26 1992-10-13 Hitachi Koki Company Limited Vacuum pump with helically threaded cylinders
EP0464292A1 (en) * 1990-07-06 1992-01-08 Alcatel Cit Second stage mechanical vacuum pumping unit and leak detection system using such a unit

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