CA1028565A - Variable displacement pump control assembly - Google Patents

Variable displacement pump control assembly

Info

Publication number
CA1028565A
CA1028565A CA233,362A CA233362A CA1028565A CA 1028565 A CA1028565 A CA 1028565A CA 233362 A CA233362 A CA 233362A CA 1028565 A CA1028565 A CA 1028565A
Authority
CA
Canada
Prior art keywords
control assembly
variable displacement
displacement pump
pump control
variable
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
Application number
CA233,362A
Other languages
French (fr)
Inventor
Walter E. Marietta
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.)
Parker Hannifin Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1028565A publication Critical patent/CA1028565A/en
Expired 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
CA233,362A 1974-09-05 1975-08-11 Variable displacement pump control assembly Expired CA1028565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/503,249 US3945764A (en) 1974-09-05 1974-09-05 Variable displacement pump control assembly

Publications (1)

Publication Number Publication Date
CA1028565A true CA1028565A (en) 1978-03-28

Family

ID=24001317

Family Applications (1)

Application Number Title Priority Date Filing Date
CA233,362A Expired CA1028565A (en) 1974-09-05 1975-08-11 Variable displacement pump control assembly

Country Status (8)

Country Link
US (1) US3945764A (en)
JP (1) JPS5152503A (en)
BR (1) BR7505530A (en)
CA (1) CA1028565A (en)
DE (1) DE2539672A1 (en)
FR (1) FR2284051A1 (en)
GB (1) GB1506620A (en)
IT (1) IT1042290B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142841A (en) * 1977-08-31 1979-03-06 Parker-Hannifin Corporation Variable displacement pump control
US4162874A (en) * 1977-11-07 1979-07-31 Parker-Hannifin Corporation Horsepower summation control for variable displacement
US4196588A (en) * 1978-05-01 1980-04-08 Caterpillar Tractor Co. Margin valve
US4332531A (en) * 1980-01-28 1982-06-01 Parker-Hannifin Corporation Variable displacement pump with torque limiting control
JPS6078143A (en) * 1983-10-06 1985-05-02 Nissan Motor Co Ltd Hydraulic controlling apparatus for automatic speed change gear
JPH0310387Y2 (en) * 1986-09-26 1991-03-14
US5226349A (en) * 1992-07-15 1993-07-13 Eaton Corporation Variable displacement hydrostatic pump and improved gain control thereof
US6802457B1 (en) * 1998-09-21 2004-10-12 Caterpillar Inc Coatings for use in fuel system components
US6715693B1 (en) 2000-02-15 2004-04-06 Caterpillar Inc Thin film coating for fuel injector components
US6468046B1 (en) 2000-09-18 2002-10-22 Caterpillar Inc Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump
US6374722B1 (en) 2000-10-26 2002-04-23 Caterpillar Inc. Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump
US6848254B2 (en) * 2003-06-30 2005-02-01 Caterpillar Inc. Method and apparatus for controlling a hydraulic motor
US7503173B2 (en) * 2005-02-08 2009-03-17 Parker-Hannifin Corporation Control devices for swashplate type variable displacement piston pump
US7644646B1 (en) 2007-06-13 2010-01-12 Sauer-Danfoss, Inc. Three position servo system to control the displacement of a hydraulic motor
US7730826B2 (en) * 2007-07-31 2010-06-08 Sauer-Danfoss Inc. Swashplate type axial piston device having apparatus for providing three operating displacements

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845876A (en) * 1954-03-01 1958-08-05 Vickers Inc Power transmission
US3067693A (en) * 1958-12-24 1962-12-11 United Aircraft Corp Control means for variable delivery pump
US3302585A (en) * 1962-09-24 1967-02-07 Abex Corp Control for variable displacement pump or motor
FR1375309A (en) * 1963-09-24 1964-10-16 Brakeshoe Internat S A Device for controlling the flow rate of a hydraulic pump or motor
GB1126873A (en) * 1964-09-22 1968-09-11 Sperry Rand Corp Improvements in hydraulic supply and control systems
US3289605A (en) * 1964-12-31 1966-12-06 Sperry Rand Corp Power transmission
US3512178A (en) * 1967-04-24 1970-05-12 Parker Hannifin Corp Axial piston pump
SE323286B (en) * 1967-12-04 1970-04-27 Sperry Rand Corp
DE1943356A1 (en) * 1969-08-26 1971-03-18 Rauch Fa Constantin Device for controlling adjustable axial piston pumps
US3601504A (en) * 1969-09-22 1971-08-24 Allis Chalmers Mfg Co Compensator and pressure limiting device
BE757640A (en) * 1969-10-16 1971-04-16 Borg Warner HYDRAULIC SYSTEMS, ESPECIALLY FOR THE REGULATION OF A VARIABLE FLOW PUMP
US3669570A (en) * 1970-03-09 1972-06-13 Mannesmann Meer Ag Power regulation for fluid machines
US3738779A (en) * 1971-06-28 1973-06-12 Caterpillar Tractor Co Variable displacement pump having pressure compensation control means
DE2357148A1 (en) * 1972-11-16 1974-05-22 Sperry Rand Ltd HYDRAULIC CIRCUIT ARRANGEMENT
US3820920A (en) * 1972-12-18 1974-06-28 Sperry Rand Corp Power transmission

Also Published As

Publication number Publication date
AU8420175A (en) 1977-02-24
US3945764A (en) 1976-03-23
DE2539672A1 (en) 1976-03-18
GB1506620A (en) 1978-04-05
BR7505530A (en) 1976-08-03
FR2284051B1 (en) 1981-10-23
IT1042290B (en) 1980-01-30
JPS5152503A (en) 1976-05-10
FR2284051A1 (en) 1976-04-02

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