CA1057163A - Arrangement for influencing the operating quantity of a servo-motor - Google Patents

Arrangement for influencing the operating quantity of a servo-motor

Info

Publication number: CA1057163A
Authority: CA; Canada
Prior art keywords: pressure; motor; servo; supply; reducing valve
Prior art date: 1976-01-21
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

CA269,906A

Other languages

English (en)

French (fr)

Inventor

Hans S. Andersen

Preben Christiansen

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.)

Danfoss AS

Original Assignee

Danfoss AS

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.)

1976-01-21

Filing date

1977-01-18

Publication date

1979-06-26

1977-01-18 Application filed by Danfoss AS filed Critical Danfoss AS

1979-06-26 Application granted granted Critical

1979-06-26 Publication of CA1057163A publication Critical patent/CA1057163A/en

Status Expired legal-status Critical Current

Links

230000001105 regulatory effect Effects 0.000 claims abstract description 21
239000012530 fluid Substances 0.000 claims abstract description 15
230000003466 anti-cipated effect Effects 0.000 claims abstract description 3
230000001276 controlling effect Effects 0.000 claims abstract description 3
230000000694 effects Effects 0.000 abstract description 3
238000006073 displacement reaction Methods 0.000 description 2
241000347881 Kadua laxiflora Species 0.000 description 1
101100270435 Mus musculus Arhgef12 gene Proteins 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
230000007935 neutral effect Effects 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1

Classifications

- 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
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
- F15B11/055—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive by adjusting the pump output or bypass
- 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
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
- 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
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
- F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
- 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
- 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
- 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
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/31552—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line
- F15B2211/31558—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line having a single 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
- F15B2211/35—Directional control combined with flow control
- F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in 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
- F15B2211/30—Directional control
- F15B2211/35—Directional control combined with flow control
- F15B2211/353—Flow control by regulating means in return line, i.e. meter-out 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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50554—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure downstream of the pressure control means, e.g. pressure reducing 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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
- F15B2211/50572—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using a pressure compensating valve for controlling the pressure difference across a flow control 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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
- F15B2211/50581—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves
- F15B2211/5059—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves using double counterbalance valves
- 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
- 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
- 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
- F15B2211/50—Pressure control
- F15B2211/57—Control of a differential 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
- F15B2211/70—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
- F15B2211/7052—Single-acting output members
- 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
- 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
- F15B2211/75—Control of speed 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
- F15B2211/76—Control of force or torque of the output member
- F15B2211/761—Control of a negative load, i.e. of a load generating hydraulic energy

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Mining & Mineral Resources (AREA)
Civil Engineering (AREA)
Structural Engineering (AREA)
Mechanical Engineering (AREA)
Fluid-Pressure Circuits (AREA)
Portable Nailing Machines And Staplers (AREA)
Control Of Fluid Pressure (AREA)
Servomotors (AREA)

CA269,906A 1976-01-21 1977-01-18 Arrangement for influencing the operating quantity of a servo-motor Expired CA1057163A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2601999A DE2601999C3 (de)	1976-01-21	1976-01-21	Anordnung zur Beeinflussung der Arbeitsmenge eines Servomotors

Publications (1)

Publication Number	Publication Date
CA1057163A true CA1057163A (en)	1979-06-26

Family

ID=5967835

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA269,906A Expired CA1057163A (en)	1976-01-21	1977-01-18	Arrangement for influencing the operating quantity of a servo-motor

Country Status (15)

Country	Link
JP (1)	JPS5845603B2 (de)
BE (1)	BE850577A (de)
BR (1)	BR7700353A (de)
CA (1)	CA1057163A (de)
CH (1)	CH600166A5 (de)
DD (1)	DD127919A5 (de)
DE (1)	DE2601999C3 (de)
DK (1)	DK149392C (de)
ES (1)	ES455200A1 (de)
FR (1)	FR2339078A1 (de)
GB (1)	GB1564744A (de)
IT (1)	IT1082954B (de)
NL (1)	NL169510C (de)
PL (1)	PL112856B1 (de)
SE (1)	SE424217B (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2757660A1 (de) *	1977-12-23	1979-06-28	Bosch Gmbh Robert	Hydraulische steuereinrichtung mit wenigstens einem wegeventil
DE3216580A1 (de) *	1981-05-07	1983-02-24	Hiab-Foco AB, 82401 Hudiksvall	Lasthalte- und senkbremsventil
US4724673A (en) *	1986-06-30	1988-02-16	Vickers, Incorporated	Power transmission
US4665801A (en) *	1986-07-21	1987-05-19	Caterpillar Inc.	Compensated fluid flow control valve
US4679492A (en) *	1986-07-21	1987-07-14	Caterpillar Inc.	Compensated fluid flow control valve
US4688470A (en) *	1986-07-21	1987-08-25	Caterpillar Inc.	Compensated fluid flow control valve
US4694731A (en) *	1986-12-22	1987-09-22	Caterpillar Inc.	Load compensated valve
DE3710699C1 (de) *	1987-03-31	1988-08-18	Heilmeier & Weinlein	Hydraulische Steuervorrichtung fuer eine Verbrauchergruppe
US4741248A (en) *	1987-05-08	1988-05-03	Caterpillar Inc.	Load responsive system having synchronizing systems between positive and negative load compensation
US5067389A (en) *	1990-08-30	1991-11-26	Caterpillar Inc.	Load check and pressure compensating valve
DE19800720C2 (de) *	1998-01-12	2001-10-31	Sauer Danfoss Nordborg As Nord	Steuerventil für einen hydraulischen Motor
KR100518769B1 (ko) *	2003-06-19	2005-10-05	볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비	유압펌프 토출유량 제어회로

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3559534A (en) *	1968-04-23	1971-02-02	Pines Engineering Co Inc	Hydraulic actuator control circuit
JPS4896393U (de) *	1972-02-22	1973-11-15
JPS521470B2 (de) *	1972-05-22	1977-01-14

1976
- 1976-01-21 DE DE2601999A patent/DE2601999C3/de not_active Expired
- 1976-12-22 CH CH1617576A patent/CH600166A5/xx not_active IP Right Cessation
1977
- 1977-01-05 IT IT67016/77A patent/IT1082954B/it active
- 1977-01-14 GB GB1570/77A patent/GB1564744A/en not_active Expired
- 1977-01-17 NL NLAANVRAGE7700447,A patent/NL169510C/xx not_active IP Right Cessation
- 1977-01-18 CA CA269,906A patent/CA1057163A/en not_active Expired
- 1977-01-18 JP JP52004342A patent/JPS5845603B2/ja not_active Expired
- 1977-01-18 PL PL1977195387A patent/PL112856B1/pl unknown
- 1977-01-18 DK DK17177A patent/DK149392C/da active
- 1977-01-19 DD DD7700197004A patent/DD127919A5/de unknown
- 1977-01-19 BR BR7700353A patent/BR7700353A/pt unknown
- 1977-01-20 SE SE7700585A patent/SE424217B/xx unknown
- 1977-01-20 ES ES455200A patent/ES455200A1/es not_active Expired
- 1977-01-20 BE BE174242A patent/BE850577A/xx not_active IP Right Cessation
- 1977-01-21 FR FR7701746A patent/FR2339078A1/fr active Granted

Also Published As

Publication number	Publication date
FR2339078A1 (fr)	1977-08-19
DE2601999C3 (de)	1980-02-21
JPS5290786A (en)	1977-07-30
DK149392C (da)	1986-10-27
SE7700585L (sv)	1977-07-22
BR7700353A (pt)	1977-09-20
CH600166A5 (de)	1978-06-15
JPS5845603B2 (ja)	1983-10-11
DE2601999B2 (de)	1979-06-21
PL112856B1 (en)	1980-11-29
DD127919A5 (de)	1977-10-19
FR2339078B1 (de)	1983-08-19
BE850577A (fr)	1977-05-16
NL169510C (nl)	1982-07-16
SE424217B (sv)	1982-07-05
IT1082954B (it)	1985-05-21
DK17177A (da)	1977-07-22
DK149392B (da)	1986-05-26
DE2601999A1 (de)	1977-07-28
ES455200A1 (es)	1977-12-16
NL7700447A (nl)	1977-07-25
GB1564744A (en)	1980-04-10

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JPH031523B2 (de)	1991-01-10
US20040221714A1 (en)	2004-11-11	Hydraulic control circuit for a hydraulic lifting cylinder
US4342256A (en)	1982-08-03	Control device for a hydraulic motor
US4811649A (en)	1989-03-14	Hydraulic control apparatus
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US4206688A (en)	1980-06-10	Overrunning load control for hydraulic motors
US4364304A (en)	1982-12-21	Arrangement for influencing the operating quantity of a servomotor
EP1045992B1 (de)	2004-11-24	Steuervorrichtung für einen hydraulikmotor
US4835966A (en)	1989-06-06	Control switching arrangement for a hydraulic power lift
US3979907A (en)	1976-09-14	Priority control valve
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US4204460A (en)	1980-05-27	Arrangement for influencing the operating quantity of a servo-motor
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US5433077A (en)	1995-07-18	Actuator control device with meter-out valve
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JPH06200904A (ja)	1994-07-19	ハイドロスタティック駆動装置
US4660380A (en)	1987-04-28	Hydraulic control arrangement
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SE443409B (sv)	1986-02-24	Ventilanordning for styrning av funktionen hos en hydraulmotor
US4542678A (en)	1985-09-24	Control arrangement for hydraulic motor