FR408840A - - Google Patents

Info

Publication number
FR408840A
FR408840A FR408840DA FR408840A FR 408840 A FR408840 A FR 408840A FR 408840D A FR408840D A FR 408840DA FR 408840 A FR408840 A FR 408840A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR408840A publication Critical patent/FR408840A/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR408840D Expired FR408840A (ja)

Publications (1)

Publication Number Publication Date
FR408840A true FR408840A (ja) 1900-01-01

Family

ID=1453027

Family Applications (1)

Application Number Title Priority Date Filing Date
FR408840D Expired FR408840A (ja)

Country Status (1)

Country Link
FR (1) FR408840A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739123C (de) * 1941-08-05 1943-09-11 Joachim Jenning Mit OElkeilwirkung arbeitende Reibungspumpe
EP0545706A1 (en) * 1991-12-04 1993-06-09 The BOC Group plc Vacuum pumps

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739123C (de) * 1941-08-05 1943-09-11 Joachim Jenning Mit OElkeilwirkung arbeitende Reibungspumpe
EP0545706A1 (en) * 1991-12-04 1993-06-09 The BOC Group plc Vacuum pumps
US5354172A (en) * 1991-12-04 1994-10-11 The Boc Group Plc Molecular drag vacuum pump

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