FR2024945A1 - - Google Patents

Info

Publication number
FR2024945A1
FR2024945A1 FR6937507A FR6937507A FR2024945A1 FR 2024945 A1 FR2024945 A1 FR 2024945A1 FR 6937507 A FR6937507 A FR 6937507A FR 6937507 A FR6937507 A FR 6937507A FR 2024945 A1 FR2024945 A1 FR 2024945A1
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.)
Withdrawn
Application number
FR6937507A
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.)
PRECISION SCIENT CY
Original Assignee
PRECISION SCIENT CY
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 PRECISION SCIENT CY filed Critical PRECISION SCIENT CY
Publication of FR2024945A1 publication Critical patent/FR2024945A1/fr
Withdrawn legal-status Critical Current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
    • F04C23/001—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 similar working principle
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/02—Liquid sealing for high-vacuum pumps or for compressors
    • 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
    • F04C2220/00—Application
    • F04C2220/50—Pumps with means for introducing gas under pressure for ballasting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
FR6937507A 1968-11-29 1969-10-31 Withdrawn FR2024945A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77977968A 1968-11-29 1968-11-29

Publications (1)

Publication Number Publication Date
FR2024945A1 true FR2024945A1 (fr) 1970-09-04

Family

ID=25117537

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6937507A Withdrawn FR2024945A1 (fr) 1968-11-29 1969-10-31

Country Status (5)

Country Link
US (1) US3525578A (fr)
JP (1) JPS5026769B1 (fr)
DE (1) DE1948804A1 (fr)
FR (1) FR2024945A1 (fr)
GB (1) GB1277470A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565295A1 (fr) * 1984-05-30 1985-12-06 Pfeiffer Vakuumtechnik Pompe a vide rotative etanchee dans l'huile

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123201A (en) * 1973-09-04 1978-10-31 Central Scientific Company, Inc. Modular vacuum pump assembly
DE2620375C2 (de) * 1976-05-08 1984-05-03 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Drehschiebervakuumpumpe
JPS52154117A (en) * 1976-06-15 1977-12-21 Barmag Barmer Maschf Vane type vacuum pumps
US4120621A (en) * 1976-07-19 1978-10-17 Puritan Bennett Corporation Oil sealed single stage vacuum pump
US4204815A (en) * 1977-12-06 1980-05-27 Gast Manufacturing Corporation Cartridge rotary vane pump
US4838772A (en) * 1977-12-06 1989-06-13 Gast Manufacturing Corporation Cartridge rotary vane pump
DE3762651D1 (de) * 1986-10-18 1990-06-13 Barmag Barmer Maschf Fluegelzellen-vakuumpumpe.
IT1234766B (it) * 1989-08-10 1992-05-26 Galileo Vacuum Tec Spa Sistema di smontaggio rapido per pompe rotative da vuoto
DE4017191A1 (de) * 1990-05-29 1991-12-05 Leybold Ag Verfahren zur oelversorgung einer zweistufigen drehschiebervakuumpumpe und fuer die durchfuehrung dieses verfahrens geeignete drehschiebervakuumpumpe
US5209653A (en) * 1992-01-17 1993-05-11 Spx Corporation Vacuum pump
DE4325286A1 (de) * 1993-07-28 1995-02-02 Leybold Ag Zweistufige Drehschiebervakuumpumpe
USD365107S (en) 1994-10-20 1995-12-12 Watsco Components, Inc. Vacuum pump
DE4439637A1 (de) * 1994-11-07 1996-05-09 Balzers Pfeiffer Gmbh Mehrstufige Drehschiebervakuumpumpe
US6881044B1 (en) 2003-10-31 2005-04-19 Gast Manufacturing Corporation Rotary vane compressor with interchangeable end plates
CN110748486B (zh) * 2019-12-07 2024-11-29 临海市谭氏真空设备有限公司 一种单轴体防反油真空泵
EP4402374A4 (fr) * 2021-09-13 2025-11-12 Milwaukee Electric Tool Corp Pompe à vide

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344745A (en) * 1967-10-03 Multiple flow rotary machine
US2902210A (en) * 1955-08-15 1959-09-01 Edwards High Vacuum Ltd Multi-stage mechanical vacuum pumps
US3226014A (en) * 1963-07-12 1965-12-28 Janenkov Nikolai Petrovich Two-stage plate rotary vacuum pumps
US3371857A (en) * 1965-10-24 1968-03-05 Prec Scient Company Multistage vacuum pump
DE1628313A1 (de) * 1966-08-20 1971-01-28 Leybold Heraeus Gmbh & Co Kg Vakuumpumpe
US3399826A (en) * 1966-08-26 1968-09-03 Cenco Instr Corp Pump with auxiliary vacuum pumping stage
US3455245A (en) * 1967-11-16 1969-07-15 Sperry Rand Corp Power transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565295A1 (fr) * 1984-05-30 1985-12-06 Pfeiffer Vakuumtechnik Pompe a vide rotative etanchee dans l'huile

Also Published As

Publication number Publication date
US3525578A (en) 1970-08-25
DE1948804A1 (de) 1970-07-02
GB1277470A (en) 1972-06-14
JPS5026769B1 (fr) 1975-09-03

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Legal Events

Date Code Title Description
ST Notification of lapse