IT1203252B - Congegno di valvola funzionante spontaneamente per la riconduzione comandata di un fluido di ritorno precaricato nella condotta fra due pompe collegate in serie specialmente per i circuiti idraulici di trattamentori agricoli - Google Patents

Congegno di valvola funzionante spontaneamente per la riconduzione comandata di un fluido di ritorno precaricato nella condotta fra due pompe collegate in serie specialmente per i circuiti idraulici di trattamentori agricoli

Info

Publication number
IT1203252B
IT1203252B IT50633/79A IT5063379A IT1203252B IT 1203252 B IT1203252 B IT 1203252B IT 50633/79 A IT50633/79 A IT 50633/79A IT 5063379 A IT5063379 A IT 5063379A IT 1203252 B IT1203252 B IT 1203252B
Authority
IT
Italy
Prior art keywords
commanded
spontaneously
recovery
pipe
hydraulic circuits
Prior art date
Application number
IT50633/79A
Other languages
English (en)
Other versions
IT7950633A0 (it
Inventor
Carl Edwin Kittle
Richard Arthur Written
Original Assignee
Deere & Co
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 Deere & Co filed Critical Deere & Co
Publication of IT7950633A0 publication Critical patent/IT7950633A0/it
Application granted granted Critical
Publication of IT1203252B publication Critical patent/IT1203252B/it

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
    • F16H61/4139—Replenishing or scavenging pumps, e.g. auxiliary charge pumps
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve
    • F15B2211/5152—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve being connected to multiple pressure sources
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/61—Secondary circuits
    • F15B2211/613—Feeding circuits
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
IT50633/79A 1978-10-23 1979-10-22 Congegno di valvola funzionante spontaneamente per la riconduzione comandata di un fluido di ritorno precaricato nella condotta fra due pompe collegate in serie specialmente per i circuiti idraulici di trattamentori agricoli IT1203252B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/953,579 US4209984A (en) 1978-10-23 1978-10-23 Hydraulic system with unloading valve assembly

Publications (2)

Publication Number Publication Date
IT7950633A0 IT7950633A0 (it) 1979-10-22
IT1203252B true IT1203252B (it) 1989-02-15

Family

ID=25494213

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50633/79A IT1203252B (it) 1978-10-23 1979-10-22 Congegno di valvola funzionante spontaneamente per la riconduzione comandata di un fluido di ritorno precaricato nella condotta fra due pompe collegate in serie specialmente per i circuiti idraulici di trattamentori agricoli

Country Status (11)

Country Link
US (1) US4209984A (it)
JP (1) JPS5557704A (it)
AR (1) AR225155A1 (it)
AU (1) AU525749B2 (it)
CA (1) CA1107174A (it)
DE (1) DE2942650C2 (it)
ES (1) ES485248A1 (it)
FR (1) FR2439893A1 (it)
GB (1) GB2035517B (it)
IT (1) IT1203252B (it)
YU (1) YU257079A (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168704A (en) * 1990-08-17 1992-12-08 General Electric Company Gas turbine engine fuel and actuation pressure pumping system
JPH0854058A (ja) * 1994-08-11 1996-02-27 Kanzaki Kokyukoki Mfg Co Ltd 車軸駆動装置
US5615553A (en) * 1995-06-28 1997-04-01 Case Corporation Hydraulic circuit with load sensing feature
DE19745118B4 (de) * 1997-10-11 2006-10-12 Wabco Gmbh & Co.Ohg Druckerzeugungsanlage
US20060127254A1 (en) * 2004-10-29 2006-06-15 Travis Bakker Hydraulic hand pump

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1402770A (fr) * 1964-08-06 1965-06-11 Lucas Industries Ltd Mécanisme de commande hydraulique
US3520322A (en) * 1965-08-30 1970-07-14 Ford Motor Co Fluid pressure control system
US3973398A (en) * 1975-09-12 1976-08-10 Deere & Company Hydraulic system and automatically shiftable direction control valve therefor
US4170113A (en) * 1978-03-24 1979-10-09 Deere & Company Hydraulic system with unloading valve assembly

Also Published As

Publication number Publication date
JPS5557704A (en) 1980-04-28
FR2439893A1 (fr) 1980-05-23
IT7950633A0 (it) 1979-10-22
AU525749B2 (en) 1982-11-25
YU257079A (en) 1983-10-31
ES485248A1 (es) 1980-06-16
AR225155A1 (es) 1982-02-26
US4209984A (en) 1980-07-01
GB2035517B (en) 1982-11-17
DE2942650A1 (de) 1980-04-24
GB2035517A (en) 1980-06-18
DE2942650C2 (de) 1984-09-20
AU5092579A (en) 1980-05-01
CA1107174A (en) 1981-08-18
FR2439893B1 (it) 1981-10-16

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