GB9503854D0 - Electrohydraulic proportional control valve assemblies - Google Patents

Electrohydraulic proportional control valve assemblies

Info

Publication number: GB9503854D0
Authority: GB; United Kingdom
Prior art keywords: control valve; proportional control; valve assemblies; electrohydraulic proportional; electrohydraulic
Prior art date: 1995-02-25
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.): Pending

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.)

Ultra Hydraulics Ltd

Original Assignee

Ultra Hydraulics 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.)

Family has litigation

First worldwide family litigation filedlitigationCriticalhttps://patents.darts-ip.com/?family=10770283&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB9503854(D0)"Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1995-02-25Application filed by Ultra Hydraulics LtdfiledCriticalUltra Hydraulics Ltd

1995-02-25Priority to GBGB9503854.3ApriorityCriticalpatent/GB9503854D0/en

1995-04-19Publication of GB9503854D0publicationCriticalpatent/GB9503854D0/en

1996-02-22Priority to DK96903123Tprioritypatent/DK0809737T4/en

1996-02-22Priority to DE69602923Tprioritypatent/DE69602923T3/en

1996-02-22Priority to CN96192050Aprioritypatent/CN1070974C/en

1996-02-22Priority to PCT/GB1996/000393prioritypatent/WO1996027051A1/en

1996-02-22Priority to EP96903123Aprioritypatent/EP0809737B2/en

1996-02-22Priority to JP8526084Aprioritypatent/JPH11501106A/en

1996-02-22Priority to GB9603811Aprioritypatent/GB2298291C/en

1996-02-22Priority to KR1019970705883Aprioritypatent/KR100432381B1/en

2006-02-09Priority to JP2006032753Aprioritypatent/JP2006177561A/en

StatusPendinglegal-statusCriticalCurrent

Classifications

- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- 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
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/167—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load using pilot pressure to sense the demand
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
- E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2285—Pilot-operated systems
- 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
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/163—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for sharing the pump output equally amongst users or groups of users, e.g. using anti-saturation, pressure compensation
- 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
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
- 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
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/3057—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having two valves, one for each port of a double-acting 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
- F15B2211/30—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
- F15B2211/50536—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
- F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a 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
- F15B2211/575—Pilot pressure control
- 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
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/634—Electronic controllers using input signals representing a state of a valve
- 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
- F15B2211/6346—Electronic controllers using input signals representing a state of input means, e.g. joystick position
- 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
- F15B2211/665—Methods of control using electronic components
- F15B2211/6654—Flow rate control

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Mining & Mineral Resources (AREA)
Civil Engineering (AREA)
Structural Engineering (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Mechanical Engineering (AREA)
Analytical Chemistry (AREA)
Chemical & Material Sciences (AREA)
Servomotors (AREA)
Fluid-Pressure Circuits (AREA)
Operation Control Of Excavators (AREA)

GBGB9503854.3A1995-02-251995-02-25Electrohydraulic proportional control valve assembliesPendingGB9503854D0 (en)

Priority Applications (10)

Application Number	Priority Date	Filing Date	Title
GBGB9503854.3AGB9503854D0 (en)	1995-02-25	1995-02-25	Electrohydraulic proportional control valve assemblies
KR1019970705883AKR100432381B1 (en)	1995-02-25	1996-02-22	Electrohydraulic proportional control valve assemblies
GB9603811AGB2298291C (en)	1995-02-25	1996-02-22	Electrohydraulic proportional control valve assemblies
CN96192050ACN1070974C (en)	1995-02-25	1996-02-22	Electrohydraulic proportional control valve assemblies
DE69602923TDE69602923T3 (en)	1995-02-25	1996-02-22	ELECTROHYDRAULIC PROPORTIONAL CONTROL VALVE DEVICE
DK96903123TDK0809737T4 (en)	1995-02-25	1996-02-22	Electrohydraulic proportional control valve designs
PCT/GB1996/000393WO1996027051A1 (en)	1995-02-25	1996-02-22	Electrohydraulic proportional control valve assemblies
EP96903123AEP0809737B2 (en)	1995-02-25	1996-02-22	Electrohydraulic proportional control valve assemblies
JP8526084AJPH11501106A (en)	1995-02-25	1996-02-22	Electro-hydraulic proportional control valve assembly
JP2006032753AJP2006177561A (en)	1995-02-25	2006-02-09	Electro-hydraulic proportional control valve assembly

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GBGB9503854.3AGB9503854D0 (en)	1995-02-25	1995-02-25	Electrohydraulic proportional control valve assemblies

Publications (1)

Publication Number	Publication Date
GB9503854D0true GB9503854D0 (en)	1995-04-19

Family

ID=10770283

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
GBGB9503854.3APendingGB9503854D0 (en)	1995-02-25	1995-02-25	Electrohydraulic proportional control valve assemblies
GB9603811AExpired - LifetimeGB2298291C (en)	1995-02-25	1996-02-22	Electrohydraulic proportional control valve assemblies

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
GB9603811AExpired - LifetimeGB2298291C (en)	1995-02-25	1996-02-22	Electrohydraulic proportional control valve assemblies

Country Status (8)

Country	Link
EP (1)	EP0809737B2 (en)
JP (2)	JPH11501106A (en)
KR (1)	KR100432381B1 (en)
CN (1)	CN1070974C (en)
DE (1)	DE69602923T3 (en)
DK (1)	DK0809737T4 (en)
GB (2)	GB9503854D0 (en)
WO (1)	WO1996027051A1 (en)

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* Cited by examiner, † Cited by third party
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Also Published As

Publication number	Publication date
DE69602923T3 (en)	2008-05-21
JP2006177561A (en)	2006-07-06
WO1996027051B1 (en)	2001-04-12
GB9603811D0 (en)	1996-04-24
EP0809737B2 (en)	2007-09-19
CN1175988A (en)	1998-03-11
DE69602923T2 (en)	1999-12-09
GB2298291A (en)	1996-08-28
GB2298291B (en)	1998-06-10
DE69602923D1 (en)	1999-07-22
EP0809737B1 (en)	1999-06-16
EP0809737A1 (en)	1997-12-03
JPH11501106A (en)	1999-01-26
DK0809737T4 (en)	2008-01-07
CN1070974C (en)	2001-09-12
KR100432381B1 (en)	2004-09-16
WO1996027051A1 (en)	1996-09-06
DK0809737T3 (en)	1999-11-22
GB2298291C (en)	2008-02-26
KR19980702483A (en)	1998-07-15

Publication	Publication Date	Title
GB2298291B (en)	1998-06-10	Electrohydraulic proportional control valve assemblies
GB2297124B (en)	1997-01-08	Hydraulic valve control device
EP0854992A4 (en)	1999-01-27	In-line control valves
AU1805697A (en)	1997-09-10	Proportional control valve
GB2298474B (en)	1999-07-28	Water-operated hydraulic control valve
GB9421723D0 (en)	1994-12-14	Control valve
GB2277066B (en)	1996-02-28	Hydraulic flow control valve assemblies
AU5475798A (en)	1998-06-03	Electrohydraulic control valve
GB2300462B (en)	1999-10-13	Hydraulic control valve
GB9403879D0 (en)	1994-04-20	Electrohydraulic valve actuator
EP0856115A4 (en)	1998-11-25	Control valve
GB2288001B (en)	1998-04-22	Hydraulic control valve assembly
GB9415133D0 (en)	1994-09-14	Proportional control hydraulic valves
GB2318618B (en)	2000-07-12	Control valves
GB9717713D0 (en)	1997-10-29	An electrohydraulic proportional control valve assembly
GB2306926B (en)	1999-09-01	hydraulic flow control valve assemblies
GB9424022D0 (en)	1995-01-18	Control valve
GB2308424B (en)	1999-09-29	Pressure control valve
EP0775834A3 (en)	1997-09-24	Hydraulic valve
GB9523878D0 (en)	1996-01-24	Valve actuator
EP0846230A4 (en)	1999-08-25	Hydraulic valve assembly
GB9525617D0 (en)	1996-02-14	Control valves
GB2296795B (en)	1998-04-01	Valve control means
AU7124596A (en)	1997-04-30	Fluid control valve
GB9505617D0 (en)	1995-05-10	Control valve

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