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 agricoliInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Fluid Gearings (AREA)
- Details Of Reciprocating Pumps (AREA)
- Lifting Devices For Agricultural Implements (AREA)
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)
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)
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 |
-
1978
- 1978-10-23 US US05/953,579 patent/US4209984A/en not_active Expired - Lifetime
-
1979
- 1979-09-18 AU AU50925/79A patent/AU525749B2/en not_active Ceased
- 1979-09-27 CA CA336,466A patent/CA1107174A/en not_active Expired
- 1979-10-18 FR FR7925889A patent/FR2439893A1/fr active Granted
- 1979-10-19 GB GB7936418A patent/GB2035517B/en not_active Expired
- 1979-10-22 DE DE2942650A patent/DE2942650C2/de not_active Expired
- 1979-10-22 ES ES485248A patent/ES485248A1/es not_active Expired
- 1979-10-22 IT IT50633/79A patent/IT1203252B/it active
- 1979-10-23 JP JP13696879A patent/JPS5557704A/ja active Pending
- 1979-10-23 AR AR278592A patent/AR225155A1/es active
- 1979-10-23 YU YU02570/79A patent/YU257079A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
AR225155A1 (es) | 1982-02-26 |
FR2439893A1 (fr) | 1980-05-23 |
DE2942650C2 (de) | 1984-09-20 |
AU5092579A (en) | 1980-05-01 |
GB2035517B (en) | 1982-11-17 |
GB2035517A (en) | 1980-06-18 |
JPS5557704A (en) | 1980-04-28 |
IT7950633A0 (it) | 1979-10-22 |
US4209984A (en) | 1980-07-01 |
YU257079A (en) | 1983-10-31 |
AU525749B2 (en) | 1982-11-25 |
FR2439893B1 (it) | 1981-10-16 |
ES485248A1 (es) | 1980-06-16 |
DE2942650A1 (de) | 1980-04-24 |
CA1107174A (en) | 1981-08-18 |
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