CH476921A - Multi-stage rotary vacuum pump - Google Patents

Multi-stage rotary vacuum pump

Info

Publication number
CH476921A
CH476921A CH1419468A CH1419468A CH476921A CH 476921 A CH476921 A CH 476921A CH 1419468 A CH1419468 A CH 1419468A CH 1419468 A CH1419468 A CH 1419468A CH 476921 A CH476921 A CH 476921A
Authority
CH
Switzerland
Prior art keywords
vacuum pump
rotary vacuum
stage rotary
stage
pump
Prior art date
Application number
CH1419468A
Other languages
German (de)
Inventor
Wycliffe Henryk
Dixon Basil
Original Assignee
Edwards High Vacuum Int Ltd
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
Priority claimed from GB07810/68A external-priority patent/GB1248031A/en
Application filed by Edwards High Vacuum Int Ltd filed Critical Edwards High Vacuum Int Ltd
Publication of CH476921A publication Critical patent/CH476921A/en

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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
CH1419468A 1967-09-21 1968-09-23 Multi-stage rotary vacuum pump CH476921A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4296567 1967-09-21
GB07810/68A GB1248031A (en) 1967-09-21 1967-09-21 Two-stage rotary vacuum pumps

Publications (1)

Publication Number Publication Date
CH476921A true CH476921A (en) 1969-08-15

Family

ID=26252934

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1419468A CH476921A (en) 1967-09-21 1968-09-23 Multi-stage rotary vacuum pump

Country Status (3)

Country Link
CH (1) CH476921A (en)
DE (1) DE1728277A1 (en)
FR (1) FR1594593A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163228A2 (en) * 1984-05-21 1985-12-04 General Signal Corporation Inlet shut-off valve for rotary piston pumps

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9125848D0 (en) * 1991-12-04 1992-02-05 Boc Group Plc Improvements in vacuum pumps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163228A2 (en) * 1984-05-21 1985-12-04 General Signal Corporation Inlet shut-off valve for rotary piston pumps
EP0163228A3 (en) * 1984-05-21 1986-03-05 General Signal Corporation Inlet shut-off valve for rotary piston pumps

Also Published As

Publication number Publication date
FR1594593A (en) 1970-06-08
DE1728277A1 (en) 1972-06-15

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Legal Events

Date Code Title Description
PL Patent ceased