FR2684417B1 - SCREW TYPE VACUUM PUMP. - Google Patents

SCREW TYPE VACUUM PUMP.

Info

Publication number
FR2684417B1
FR2684417B1 FR9114715A FR9114715A FR2684417B1 FR 2684417 B1 FR2684417 B1 FR 2684417B1 FR 9114715 A FR9114715 A FR 9114715A FR 9114715 A FR9114715 A FR 9114715A FR 2684417 B1 FR2684417 B1 FR 2684417B1
Authority
FR
France
Prior art keywords
vacuum pump
screw type
type vacuum
screw
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 - Fee Related
Application number
FR9114715A
Other languages
French (fr)
Other versions
FR2684417A1 (en
Inventor
Guy Lemarquand
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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 Alcatel CIT SA filed Critical Alcatel CIT SA
Priority to FR9114715A priority Critical patent/FR2684417B1/en
Publication of FR2684417A1 publication Critical patent/FR2684417A1/en
Application granted granted Critical
Publication of FR2684417B1 publication Critical patent/FR2684417B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • F04C2250/00—Geometry
    • F04C2250/20—Geometry of the rotor
    • F04C2250/201—Geometry of the rotor conical shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
FR9114715A 1991-11-28 1991-11-28 SCREW TYPE VACUUM PUMP. Expired - Fee Related FR2684417B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9114715A FR2684417B1 (en) 1991-11-28 1991-11-28 SCREW TYPE VACUUM PUMP.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9114715A FR2684417B1 (en) 1991-11-28 1991-11-28 SCREW TYPE VACUUM PUMP.

Publications (2)

Publication Number Publication Date
FR2684417A1 FR2684417A1 (en) 1993-06-04
FR2684417B1 true FR2684417B1 (en) 1994-01-07

Family

ID=9419442

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9114715A Expired - Fee Related FR2684417B1 (en) 1991-11-28 1991-11-28 SCREW TYPE VACUUM PUMP.

Country Status (1)

Country Link
FR (1) FR2684417B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6244844B1 (en) * 1999-03-31 2001-06-12 Emerson Electric Co. Fluid displacement apparatus with improved helical rotor structure
EP1859163A4 (en) 2005-03-10 2014-11-26 Alan Notis Pressure sealed tapered screw pump/motor
GB2501305A (en) * 2012-04-19 2013-10-23 Univ City Screw machine with tapered diameter rotors
US10006340B2 (en) * 2013-10-16 2018-06-26 John Malcolm Gray Supercharger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB384355A (en) * 1931-08-05 1932-12-08 Frederick Charles Greenfield Improvements in and relating to rotary machines for the compression and propulsion of
FR789211A (en) * 1935-04-24 1935-10-25 Cfcmug Rotary positive displacement motor or compressor
US3180559A (en) * 1962-04-11 1965-04-27 John R Boyd Mechanical vacuum pump
FR1500160A (en) * 1966-07-29 1967-11-03 Improvements to compressors and rotary motors
FR2538463B1 (en) * 1982-12-23 1985-06-21 Dba VOLUMETRIC CONICAL SCREW MACHINE

Also Published As

Publication number Publication date
FR2684417A1 (en) 1993-06-04

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Legal Events

Date Code Title Description
ST Notification of lapse