FR70433E - Pompe mécanique à vide poussé du type roots - Google Patents

Pompe mécanique à vide poussé du type roots

Info

Publication number
FR70433E
FR70433E FR70433DA FR70433E FR 70433 E FR70433 E FR 70433E FR 70433D A FR70433D A FR 70433DA FR 70433 E FR70433 E FR 70433E
Authority
FR
France
Prior art keywords
high vacuum
type high
mechanical pump
roots type
vacuum mechanical
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
English (en)
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.)
WC Heraus GmbH and Co KG
Original Assignee
WC Heraus GmbH and Co KG
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 WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Application granted granted Critical
Publication of FR70433E publication Critical patent/FR70433E/fr
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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/005—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR70433D 1956-07-11 1956-07-11 Pompe mécanique à vide poussé du type roots Expired FR70433E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR70433T 1956-07-11

Publications (1)

Publication Number Publication Date
FR70433E true FR70433E (fr) 1959-05-06

Family

ID=8702129

Family Applications (1)

Application Number Title Priority Date Filing Date
FR70433D Expired FR70433E (fr) 1956-07-11 1956-07-11 Pompe mécanique à vide poussé du type roots

Country Status (1)

Country Link
FR (1) FR70433E (fr)

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