GB201506773D0 - Pump - Google Patents

Pump

Info

Publication number
GB201506773D0
GB201506773D0 GBGB1506773.9A GB201506773A GB201506773D0 GB 201506773 D0 GB201506773 D0 GB 201506773D0 GB 201506773 A GB201506773 A GB 201506773A GB 201506773 D0 GB201506773 D0 GB 201506773D0
Authority
GB
United Kingdom
Prior art keywords
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.)
Withdrawn
Application number
GBGB1506773.9A
Other versions
GB2537635A (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.)
Edwards Ltd
Original Assignee
Edwards 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
Application filed by Edwards Ltd filed Critical Edwards Ltd
Priority to GB1506773.9A priority Critical patent/GB2537635A/en
Publication of GB201506773D0 publication Critical patent/GB201506773D0/en
Publication of GB2537635A publication Critical patent/GB2537635A/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/084—Toothed wheels
    • 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
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • 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
    • F04C2220/10—Vacuum
    • F04C2220/12—Dry running

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
GB1506773.9A 2015-04-21 2015-04-21 Pump Withdrawn GB2537635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1506773.9A GB2537635A (en) 2015-04-21 2015-04-21 Pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1506773.9A GB2537635A (en) 2015-04-21 2015-04-21 Pump

Publications (2)

Publication Number Publication Date
GB201506773D0 true GB201506773D0 (en) 2015-06-03
GB2537635A GB2537635A (en) 2016-10-26

Family

ID=53298937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1506773.9A Withdrawn GB2537635A (en) 2015-04-21 2015-04-21 Pump

Country Status (1)

Country Link
GB (1) GB2537635A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2607936A (en) * 2021-06-17 2022-12-21 Edwards Ltd Screw-type vacuum pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138110A (en) * 1962-06-05 1964-06-23 Joseph E Whitfield Helically threaded intermeshing rotors
US3289600A (en) * 1964-03-13 1966-12-06 Joseph E Whitfield Helically threaded rotors for screw type pumps, compressors and similar devices
JP3593365B2 (en) * 1994-08-19 2004-11-24 大亜真空株式会社 Variable helix angle gear
WO2005033519A1 (en) * 2003-10-01 2005-04-14 City University Plural screw positive displacement machines
JP2005315149A (en) * 2004-04-28 2005-11-10 Toyota Industries Corp Screw type fluid machine
US8328542B2 (en) * 2008-12-31 2012-12-11 General Electric Company Positive displacement rotary components having main and gate rotors with axial flow inlets and outlets
DE102012009103A1 (en) * 2012-05-08 2013-11-14 Ralf Steffens spindle compressor

Also Published As

Publication number Publication date
GB2537635A (en) 2016-10-26

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)