US3713291B1 - - Google Patents
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- Publication number
- US3713291B1 US3713291B1 US3713291DA US3713291B1 US 3713291 B1 US3713291 B1 US 3713291B1 US 3713291D A US3713291D A US 3713291DA US 3713291 B1 US3713291 B1 US 3713291B1
- Authority
- US
- United States
- 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
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Classifications
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- 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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
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- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
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- 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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
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- 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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
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- 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
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
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- 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
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
-
- 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
- F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
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- 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
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- 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
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- 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
- F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve
- F15B2211/5154—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve being connected to multiple ports of an output member
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- 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
- F15B2211/52—Pressure control characterised by the type of actuation
- F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
-
- 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
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- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
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- 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
- F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
- F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve 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
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
- F15B2211/7054—Having equal piston areas
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- 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
- F15B2211/755—Control of acceleration or deceleration of the output member
-
- 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
- F15B2211/765—Control of position or angle of the output member
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9194970A | 1970-11-23 | 1970-11-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
US3713291A US3713291A (en) | 1973-01-30 |
US3713291B1 true US3713291B1 (en) | 1989-07-04 |
Family
ID=22230450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00091949A Expired - Lifetime US3713291A (en) | 1970-11-23 | 1970-11-23 | Multiple pressure fluid system |
Country Status (1)
Country | Link |
---|---|
US (1) | US3713291A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3943716A (en) * | 1973-12-07 | 1976-03-16 | Linden Alimak Ab | Control arrangement, preferably for remote controlled, hydrostatically operated hoist machineries |
US3952513A (en) * | 1975-01-06 | 1976-04-27 | Kubik Philip A | Variable speed and torque feed system |
US3955369A (en) * | 1975-04-16 | 1976-05-11 | Abex Corporation | Actuator average pressure maintenance in closed loop system |
US4043125A (en) * | 1976-07-19 | 1977-08-23 | Kubik Philip A | Fluid system |
US4188859A (en) * | 1978-09-21 | 1980-02-19 | Lamph A Norman | Fluid drive mechanisms and methods |
US4537029A (en) * | 1982-09-23 | 1985-08-27 | Vickers, Incorporated | Power transmission |
DE3743385A1 (en) * | 1987-12-21 | 1989-07-06 | Rexroth Mannesmann Gmbh | HYDROSTATIC DRIVE FOR WAVE MACHINES IN SWIMMING POOLS |
US5647208A (en) * | 1996-01-25 | 1997-07-15 | Erry P. Oudang | Hydraulic pumping unit |
US6053711A (en) * | 1997-12-16 | 2000-04-25 | Barber Industries Inc. | Pump for pressurizing control system |
US6295810B1 (en) * | 1998-08-03 | 2001-10-02 | Linde Aktiengesellschaft | Hydrostatic drive system |
US20060025269A1 (en) * | 2004-07-30 | 2006-02-02 | Dr. Ing.H.C. F. Porsche Ag | Hydraulic linear drive of a transmission actuator |
WO2010144993A1 (en) | 2009-06-19 | 2010-12-23 | Husky Injection Molding Systems Ltd. | Kinematic control in a hydraulic system |
US20220145770A1 (en) * | 2019-09-13 | 2022-05-12 | Moog Japan Ltd. | Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2192778A (en) * | 1940-03-05 | Drawing press | ||
US1983900A (en) * | 1927-04-15 | 1934-12-11 | Oilgear Co | Hydraulic drive for machine tools |
US2286358A (en) * | 1940-02-02 | 1942-06-16 | Hydraulic Dev Corp Inc | Hydraulic control for variable delivery pumps |
US2936588A (en) * | 1958-01-20 | 1960-05-17 | Deere & Co | Hydraulic pump and motor apparatus with load responsive pump regulating means |
US2892312A (en) * | 1958-01-27 | 1959-06-30 | Deere & Co | Demand compensated hydraulic system |
US3429123A (en) * | 1967-08-29 | 1969-02-25 | Leblond Mach Tool Co R K | Speed control system |
-
1970
- 1970-11-23 US US00091949A patent/US3713291A/en not_active Expired - Lifetime
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3943716A (en) * | 1973-12-07 | 1976-03-16 | Linden Alimak Ab | Control arrangement, preferably for remote controlled, hydrostatically operated hoist machineries |
US3952513A (en) * | 1975-01-06 | 1976-04-27 | Kubik Philip A | Variable speed and torque feed system |
US3955369A (en) * | 1975-04-16 | 1976-05-11 | Abex Corporation | Actuator average pressure maintenance in closed loop system |
FR2307996A1 (en) * | 1975-04-16 | 1976-11-12 | Abex Corp | FLUID ACTUATOR HYDRAULIC CONTROL ASSEMBLY |
US4043125A (en) * | 1976-07-19 | 1977-08-23 | Kubik Philip A | Fluid system |
US4188859A (en) * | 1978-09-21 | 1980-02-19 | Lamph A Norman | Fluid drive mechanisms and methods |
US4537029A (en) * | 1982-09-23 | 1985-08-27 | Vickers, Incorporated | Power transmission |
DE3743385A1 (en) * | 1987-12-21 | 1989-07-06 | Rexroth Mannesmann Gmbh | HYDROSTATIC DRIVE FOR WAVE MACHINES IN SWIMMING POOLS |
US5647208A (en) * | 1996-01-25 | 1997-07-15 | Erry P. Oudang | Hydraulic pumping unit |
US6053711A (en) * | 1997-12-16 | 2000-04-25 | Barber Industries Inc. | Pump for pressurizing control system |
US6295810B1 (en) * | 1998-08-03 | 2001-10-02 | Linde Aktiengesellschaft | Hydrostatic drive system |
US20060025269A1 (en) * | 2004-07-30 | 2006-02-02 | Dr. Ing.H.C. F. Porsche Ag | Hydraulic linear drive of a transmission actuator |
US7347117B2 (en) * | 2004-07-30 | 2008-03-25 | Dr. Ing. H.C.F. Porsche Aktiengesellschaft | Hydraulic linear drive of a transmission actuator |
WO2010144993A1 (en) | 2009-06-19 | 2010-12-23 | Husky Injection Molding Systems Ltd. | Kinematic control in a hydraulic system |
US9038526B2 (en) | 2009-06-19 | 2015-05-26 | Husky Injection Molding Systems Ltd. | Kinematic control in a hydraulic system |
US20220145770A1 (en) * | 2019-09-13 | 2022-05-12 | Moog Japan Ltd. | Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same |
US11808158B2 (en) * | 2019-09-13 | 2023-11-07 | Moog Japan Ltd. | Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same |
Also Published As
Publication number | Publication date |
---|---|
US3713291A (en) | 1973-01-30 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KUBIK, INC., 247 MINNESOTA TROY, MI 48084 A CORP Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KUBIK, PHILIP A.;REEL/FRAME:004432/0173 Effective date: 19850530 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
|
RR | Request for reexamination filed |
Effective date: 19880721 |
|
B1 | Reexamination certificate first reexamination |