AU2003274358A1 - Improvement in or relating to pumps - Google Patents

Improvement in or relating to pumps

Info

Publication number
AU2003274358A1
AU2003274358A1 AU2003274358A AU2003274358A AU2003274358A1 AU 2003274358 A1 AU2003274358 A1 AU 2003274358A1 AU 2003274358 A AU2003274358 A AU 2003274358A AU 2003274358 A AU2003274358 A AU 2003274358A AU 2003274358 A1 AU2003274358 A1 AU 2003274358A1
Authority
AU
Australia
Prior art keywords
pumps
relating
improvement
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.)
Abandoned
Application number
AU2003274358A
Inventor
Stephen Hodge
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.)
Concentric Pumps Ltd
Original Assignee
Concentric Pumps 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 Concentric Pumps Ltd filed Critical Concentric Pumps Ltd
Publication of AU2003274358A1 publication Critical patent/AU2003274358A1/en
Abandoned 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
AU2003274358A 2002-10-22 2003-10-22 Improvement in or relating to pumps Abandoned AU2003274358A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0224519A GB2394512A (en) 2002-10-22 2002-10-22 Pump rotor set with increased fill limit
GB0224519.9 2002-10-22
PCT/GB2003/004559 WO2004038223A1 (en) 2002-10-22 2003-10-22 Improvement in or relating to pumps

Publications (1)

Publication Number Publication Date
AU2003274358A1 true AU2003274358A1 (en) 2004-05-13

Family

ID=9946335

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003274358A Abandoned AU2003274358A1 (en) 2002-10-22 2003-10-22 Improvement in or relating to pumps

Country Status (3)

Country Link
AU (1) AU2003274358A1 (en)
GB (1) GB2394512A (en)
WO (1) WO2004038223A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006125391A (en) * 2004-09-28 2006-05-18 Aisin Seiki Co Ltd Rotor structure for internal gear pump
GB0620646D0 (en) * 2006-10-18 2006-11-29 Concentric Vfp Ltd Pumps with filling slots
WO2009130433A1 (en) * 2008-04-22 2009-10-29 Concentric Vfp Limited Pump with filling slots
CN110529379B (en) * 2019-09-12 2021-01-01 东莞市雅之雷德机电科技有限公司 Vacuum pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943155C (en) * 1954-05-16 1956-05-09 Otto Nuebling Oil pump working according to the displacement principle
GB2104153B (en) * 1981-08-15 1984-08-30 Concentric Pumps Ltd Rotary positive-displacement fluid-pumps
JPS63212786A (en) * 1987-02-26 1988-09-05 Sumitomo Electric Ind Ltd Pump rotor
US4836760A (en) * 1987-03-12 1989-06-06 Parker Hannifin Corporation Inlet for a positive displacement pump
JPH05164060A (en) * 1991-12-12 1993-06-29 Nippondenso Co Ltd Gear pump
DE4200883C1 (en) * 1992-01-15 1993-04-15 Siegfried A. Dipl.-Ing. 7960 Aulendorf De Eisenmann
DE19820565A1 (en) * 1997-06-21 1999-01-21 Bayerische Motoren Werke Ag Geared pump for use in vehicles

Also Published As

Publication number Publication date
GB2394512A (en) 2004-04-28
GB0224519D0 (en) 2002-11-27
WO2004038223A1 (en) 2004-05-06

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase