FR25660E - Helical pump for high vacuum - Google Patents

Helical pump for high vacuum

Info

Publication number
FR25660E
FR25660E FR25660DA FR25660E FR 25660 E FR25660 E FR 25660E FR 25660D A FR25660D A FR 25660DA FR 25660 E FR25660 E FR 25660E
Authority
FR
France
Prior art keywords
high vacuum
helical pump
helical
pump
vacuum
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)
Inventor
Fernand Holweck
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
Application granted granted Critical
Publication of FR25660E publication Critical patent/FR25660E/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
    • 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)
FR25660D 1921-11-15 1921-11-15 Helical pump for high vacuum Expired FR25660E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR25660T 1921-11-15

Publications (1)

Publication Number Publication Date
FR25660E true FR25660E (en) 1923-05-16

Family

ID=8664156

Family Applications (1)

Application Number Title Priority Date Filing Date
FR25660D Expired FR25660E (en) 1921-11-15 1921-11-15 Helical pump for high vacuum

Country Status (1)

Country Link
FR (1) FR25660E (en)

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