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GB2297128B - Closed centre hydraulic systems - Google Patents

Closed centre hydraulic systems

Info

Publication number
GB2297128B
GB2297128B GB9424317A GB9424317A GB2297128B GB 2297128 B GB2297128 B GB 2297128B GB 9424317 A GB9424317 A GB 9424317A GB 9424317 A GB9424317 A GB 9424317A GB 2297128 B GB2297128 B GB 2297128B
Authority
GB
United Kingdom
Prior art keywords
hydraulic systems
closed centre
centre hydraulic
closed
systems
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 - Lifetime
Application number
GB9424317A
Other versions
GB2297128A (en
GB9424317D0 (en
Inventor
Ian David Patterson
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.)
Danfoss Power Solutions Ltd Great Britain
Sauer Danfoss Swindon Ltd
Original Assignee
Sauer Sundstrand Ltd
Sauer Sundstrand UK Holdings 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 Sauer Sundstrand Ltd, Sauer Sundstrand UK Holdings Ltd filed Critical Sauer Sundstrand Ltd
Priority to GB9424317A priority Critical patent/GB2297128B/en
Publication of GB9424317D0 publication Critical patent/GB9424317D0/en
Publication of GB2297128A publication Critical patent/GB2297128A/en
Application granted granted Critical
Publication of GB2297128B publication Critical patent/GB2297128B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0053—Venting means for starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
GB9424317A 1994-12-01 1994-12-01 Closed centre hydraulic systems Expired - Lifetime GB2297128B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9424317A GB2297128B (en) 1994-12-01 1994-12-01 Closed centre hydraulic systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9424317A GB2297128B (en) 1994-12-01 1994-12-01 Closed centre hydraulic systems

Publications (3)

Publication Number Publication Date
GB9424317D0 GB9424317D0 (en) 1995-01-18
GB2297128A GB2297128A (en) 1996-07-24
GB2297128B true GB2297128B (en) 1998-08-05

Family

ID=10765308

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9424317A Expired - Lifetime GB2297128B (en) 1994-12-01 1994-12-01 Closed centre hydraulic systems

Country Status (1)

Country Link
GB (1) GB2297128B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040057836A1 (en) * 2002-09-25 2004-03-25 Caterpillar Inc. Hydraulic pump circuit
JP2006220177A (en) * 2005-02-08 2006-08-24 Komatsu Ltd Hydraulic shovel
US20140352822A1 (en) * 2013-05-31 2014-12-04 Eaton Corporation Air bleed valve float arrangement with restrictor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1410812A (en) * 1971-11-25 1975-10-22 Langen Co Thomas K H Automatic air bleeder means for piston pumps
US4021155A (en) * 1975-11-13 1977-05-03 Sundstrand Corporation Oil burner pumping system with air purging valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1410812A (en) * 1971-11-25 1975-10-22 Langen Co Thomas K H Automatic air bleeder means for piston pumps
US4021155A (en) * 1975-11-13 1977-05-03 Sundstrand Corporation Oil burner pumping system with air purging valve

Also Published As

Publication number Publication date
GB2297128A (en) 1996-07-24
GB9424317D0 (en) 1995-01-18

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Legal Events

Date Code Title Description
730A Proceeding under section 30 patents act 1977
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20141130