GB9307074D0 - Improvements relating to pumps - Google Patents

Improvements relating to pumps

Info

Publication number
GB9307074D0
GB9307074D0 GB939307074A GB9307074A GB9307074D0 GB 9307074 D0 GB9307074 D0 GB 9307074D0 GB 939307074 A GB939307074 A GB 939307074A GB 9307074 A GB9307074 A GB 9307074A GB 9307074 D0 GB9307074 D0 GB 9307074D0
Authority
GB
United Kingdom
Prior art keywords
rotor
annulus
pump
output condition
parts
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.)
Granted
Application number
GB939307074A
Other versions
GB2265946B (en
GB2265946A (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.)
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
Priority claimed from GB929207674A external-priority patent/GB9207674D0/en
Application filed by Concentric Pumps Ltd filed Critical Concentric Pumps Ltd
Publication of GB9307074D0 publication Critical patent/GB9307074D0/en
Publication of GB2265946A publication Critical patent/GB2265946A/en
Application granted granted Critical
Publication of GB2265946B publication Critical patent/GB2265946B/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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/10—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Valve Device For Special Equipments (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Vehicle Body Suspensions (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

A variable output pump is of the gerotor type with a multi-lobed rotor meshed internally of an annulus with one extra lobe, the rotor comprising two parts axially arranged end-to-end and one of which is arranged to be phase shifted by relative rotation. After a 180 degree shift (Figure 5) the chambers formed between the rotors and annulus will comprise one axial part between rotor 10 and annulus 16 which is at maximum volume whilst the adjacent and communicating part between rotor 12 and the annulus will be at minimum volume and hence the pump will be in zero output condition. When both rotor parts are phase synchronised the pump is in maximum output condition; it can be turned to any intermediate position. <IMAGE>
GB9307074A 1992-04-08 1993-04-05 Improvements relating to pumps Expired - Fee Related GB2265946B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929207674A GB9207674D0 (en) 1992-04-08 1992-04-08 Improvements relating to pumps
GB929214885A GB9214885D0 (en) 1992-04-08 1992-07-14 Improvements relating to pumps

Publications (3)

Publication Number Publication Date
GB9307074D0 true GB9307074D0 (en) 1993-05-26
GB2265946A GB2265946A (en) 1993-10-13
GB2265946B GB2265946B (en) 1995-01-18

Family

ID=26300673

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9307074A Expired - Fee Related GB2265946B (en) 1992-04-08 1993-04-05 Improvements relating to pumps

Country Status (11)

Country Link
EP (1) EP0565340B1 (en)
JP (1) JPH06508416A (en)
AT (1) ATE131579T1 (en)
DE (1) DE69300999T2 (en)
DK (1) DK0565340T3 (en)
ES (1) ES2083824T3 (en)
FI (1) FI105283B (en)
GB (1) GB2265946B (en)
GR (1) GR3018911T3 (en)
NO (2) NO934469D0 (en)
WO (1) WO1993021443A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2313411B (en) * 1996-05-25 1999-10-13 Concentric Pumps Ltd Improvements in drive systems
DE10222131C5 (en) * 2002-05-17 2011-08-11 Schwäbische Hüttenwerke Automotive GmbH & Co. KG, 73433 Positive displacement pump with delivery volume adjustment
CA2588811C (en) 2004-12-22 2014-01-21 Magna Powertrain Inc. Variable capacity gerotor pump
GB2430237A (en) * 2005-06-11 2007-03-21 Concentric Pumps Ltd Variable output internal gear pump
GB2436594A (en) * 2006-03-28 2007-10-03 Concentric Vfp Ltd A variable output pump assembly
GB2441773B (en) * 2006-09-15 2011-02-23 Concentric Vfp Ltd Engine Lubricant Pump Control System
GB0620648D0 (en) * 2006-10-18 2006-11-29 Concentric Vfp Ltd Improvements in gerotor pump performance
GB0620646D0 (en) * 2006-10-18 2006-11-29 Concentric Vfp Ltd Pumps with filling slots
GB0625765D0 (en) 2006-12-22 2007-02-07 Concentric Pumps Ltd Pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120324A (en) * 1982-05-13 1983-11-30 Neptune Systems Limited Variable-displacement rotary pump or motor
GB8422755D0 (en) * 1984-09-08 1984-10-10 Concentric Pumps Ltd Oil pumps
GB8706630D0 (en) * 1987-03-20 1987-04-23 Concentric Pumps Ltd Variable output oil pump

Also Published As

Publication number Publication date
DK0565340T3 (en) 1996-02-19
DE69300999D1 (en) 1996-01-25
ATE131579T1 (en) 1995-12-15
EP0565340A1 (en) 1993-10-13
GR3018911T3 (en) 1996-05-31
DE69300999T2 (en) 1996-05-23
FI935470A0 (en) 1993-12-07
GB2265946B (en) 1995-01-18
NO934469D0 (en) 1993-12-08
JPH06508416A (en) 1994-09-22
GB2265946A (en) 1993-10-13
WO1993021443A1 (en) 1993-10-28
EP0565340B1 (en) 1995-12-13
ES2083824T3 (en) 1996-04-16
FI935470A (en) 1993-12-07
FI105283B (en) 2000-07-14
NO304752B1 (en) 1999-02-08
NO934469L (en) 1993-12-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970405