FR876212A - Rotary vacuum pump with two or more stages - Google Patents

Rotary vacuum pump with two or more stages

Info

Publication number
FR876212A
FR876212A FR876212DA FR876212A FR 876212 A FR876212 A FR 876212A FR 876212D A FR876212D A FR 876212DA FR 876212 A FR876212 A FR 876212A
Authority
FR
France
Prior art keywords
stages
vacuum pump
rotary vacuum
rotary
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.)
SUISSE CONSTRUCTION LOCOMOTIVE
Original Assignee
SUISSE CONSTRUCTION LOCOMOTIVE
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 SUISSE CONSTRUCTION LOCOMOTIVE filed Critical SUISSE CONSTRUCTION LOCOMOTIVE
Application granted granted Critical
Publication of FR876212A publication Critical patent/FR876212A/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR876212D 1939-07-05 1940-09-16 Rotary vacuum pump with two or more stages Expired FR876212A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE876212X 1939-07-05

Publications (1)

Publication Number Publication Date
FR876212A true FR876212A (en) 1942-10-30

Family

ID=6817616

Family Applications (1)

Application Number Title Priority Date Filing Date
FR876212D Expired FR876212A (en) 1939-07-05 1940-09-16 Rotary vacuum pump with two or more stages

Country Status (1)

Country Link
FR (1) FR876212A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943711A (en) * 1973-04-13 1976-03-16 Nissan Motor Company Limited Multi-stage air pump for supplying secondary air into an exhaust gas purification system
US4278406A (en) * 1979-11-07 1981-07-14 R. W. Beckett Corporation Electromagnetic pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943711A (en) * 1973-04-13 1976-03-16 Nissan Motor Company Limited Multi-stage air pump for supplying secondary air into an exhaust gas purification system
US4278406A (en) * 1979-11-07 1981-07-14 R. W. Beckett Corporation Electromagnetic pump

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