DE239213C - - Google Patents

Info

Publication number
DE239213C
DE239213C DENDAT239213D DE239213DA DE239213C DE 239213 C DE239213 C DE 239213C DE NDAT239213 D DENDAT239213 D DE NDAT239213D DE 239213D A DE239213D A DE 239213DA DE 239213 C DE239213 C DE 239213C
Authority
DE
Germany
Prior art keywords
bodies
pump
vacuum
cylinder
grooves
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.)
Active
Application number
DENDAT239213D
Other languages
German (de)
English (en)
Publication of DE239213C publication Critical patent/DE239213C/de
Active 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/168—Pumps specially adapted to produce a vacuum

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
DENDAT239213D Active DE239213C (ja)

Publications (1)

Publication Number Publication Date
DE239213C true DE239213C (ja)

Family

ID=498677

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT239213D Active DE239213C (ja)

Country Status (1)

Country Link
DE (1) DE239213C (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989007202A1 (en) * 1988-01-29 1989-08-10 Institut Teoreticheskoi I Prikladnoi Mekhaniki Sib Device for pumping a fluid medium
DE3919529A1 (de) * 1988-07-13 1990-01-18 Osaka Vacuum Ltd Vakuumpumpe
EP0445855A1 (en) * 1990-03-09 1991-09-11 VARIAN S.p.A. Improved turbomolecular pump
EP0643227A1 (en) * 1993-09-10 1995-03-15 The BOC Group plc Vacuum pumps
EP0874159A2 (de) * 1993-05-03 1998-10-28 Leybold Vakuum GmbH Reibungsvakuumpumpe mit einer Gaedepumpenstufe
US12006443B2 (en) 2019-10-31 2024-06-11 Faber-Castell Ag Core or crayon for writing and/or coloring

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989007202A1 (en) * 1988-01-29 1989-08-10 Institut Teoreticheskoi I Prikladnoi Mekhaniki Sib Device for pumping a fluid medium
DE3919529A1 (de) * 1988-07-13 1990-01-18 Osaka Vacuum Ltd Vakuumpumpe
EP0445855A1 (en) * 1990-03-09 1991-09-11 VARIAN S.p.A. Improved turbomolecular pump
EP0874159A2 (de) * 1993-05-03 1998-10-28 Leybold Vakuum GmbH Reibungsvakuumpumpe mit einer Gaedepumpenstufe
EP0874159A3 (de) * 1993-05-03 1998-11-18 Leybold Vakuum GmbH Reibungsvakuumpumpe mit einer Gaedepumpenstufe
EP0643227A1 (en) * 1993-09-10 1995-03-15 The BOC Group plc Vacuum pumps
US5611660A (en) * 1993-09-10 1997-03-18 The Boc Group Plc Compound vacuum pumps
US12006443B2 (en) 2019-10-31 2024-06-11 Faber-Castell Ag Core or crayon for writing and/or coloring

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