DE3011088A1 - Hydraulische antriebsschaltung - Google Patents

Hydraulische antriebsschaltung

Info

Publication number
DE3011088A1
DE3011088A1 DE19803011088 DE3011088A DE3011088A1 DE 3011088 A1 DE3011088 A1 DE 3011088A1 DE 19803011088 DE19803011088 DE 19803011088 DE 3011088 A DE3011088 A DE 3011088A DE 3011088 A1 DE3011088 A1 DE 3011088A1
Authority
DE
Germany
Prior art keywords
valve
metering valve
discharge
drive circuit
hydraulic drive
Prior art date
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.)
Withdrawn
Application number
DE19803011088
Other languages
German (de)
English (en)
Inventor
Robert H Breeden
Robert G Farrell
Kurt R Lonnemo
Henry D Taylor
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.)
Vickers Inc
Original Assignee
Sperry Corp
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
Priority claimed from US06/024,058 external-priority patent/US4201052A/en
Application filed by Sperry Corp filed Critical Sperry Corp
Publication of DE3011088A1 publication Critical patent/DE3011088A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control 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
    • F16H61/38Control of exclusively fluid gearing
    • F16H61/40Control of exclusively fluid gearing hydrostatic
    • F16H61/42Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/433Pump capacity control by fluid pressure control means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/2053Type of pump
    • F15B2211/20546Type of pump variable capacity
    • F15B2211/20553Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/30525Directional control valves, e.g. 4/3-directional control valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/31Directional control characterised by the positions of the valve element
    • F15B2211/3144Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/32Directional control characterised by the type of actuation
    • F15B2211/329Directional control characterised by the type of actuation actuated by fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/35Directional control combined with flow control
    • F15B2211/351Flow control by regulating means in feed line, i.e. meter-in control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/405Flow control characterised by the type of flow control means or valve
    • F15B2211/40515Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/415Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41527Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/42Flow control characterised by the type of actuation
    • F15B2211/428Flow control characterised by the type of actuation actuated by fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/46Control of flow in the return line, i.e. meter-out control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/50Pressure control
    • F15B2211/505Pressure control characterised by the type of pressure control means
    • F15B2211/50509Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518Pressure 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/50Pressure control
    • F15B2211/515Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5156Pressure control characterised by the connections of the pressure control means in the circuit being connected to a return line and a directional control valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/50Pressure control
    • F15B2211/555Pressure control for assuring a minimum pressure, e.g. by using a back pressure valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/605Load sensing circuits
    • F15B2211/6051Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054Load sensing circuits having valve means between output member and the load sensing circuit using shuttle valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/61Secondary circuits
    • F15B2211/613Feeding circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/635Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051Linear output members
    • F15B2211/7053Double-acting output members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75Control of speed of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)
DE19803011088 1979-03-26 1980-03-22 Hydraulische antriebsschaltung Withdrawn DE3011088A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/024,058 US4201052A (en) 1979-03-26 1979-03-26 Power transmission
US11793680A 1980-02-04 1980-02-04

Publications (1)

Publication Number Publication Date
DE3011088A1 true DE3011088A1 (de) 1980-10-09

Family

ID=26697984

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803011088 Withdrawn DE3011088A1 (de) 1979-03-26 1980-03-22 Hydraulische antriebsschaltung

Country Status (10)

Country Link
JP (1) JPS6479405A (enrdf_load_stackoverflow)
AU (1) AU536970B2 (enrdf_load_stackoverflow)
CA (1) CA1142057A (enrdf_load_stackoverflow)
DE (1) DE3011088A1 (enrdf_load_stackoverflow)
FR (1) FR2452618A1 (enrdf_load_stackoverflow)
GB (1) GB2044366B (enrdf_load_stackoverflow)
IN (1) IN154913B (enrdf_load_stackoverflow)
IT (2) IT1221037B (enrdf_load_stackoverflow)
NO (1) NO155211C (enrdf_load_stackoverflow)
SE (2) SE443409B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039473A1 (de) * 1980-05-05 1981-11-11 Vickers Incorporated Hydraulisches Kraftübertragungssystem
EP0041199A1 (en) * 1980-05-29 1981-12-09 Sperry Corporation Power transmission
DE3347000A1 (de) * 1983-12-24 1985-07-04 Robert Bosch Gmbh, 7000 Stuttgart Elektrohydraulische einrichtung zur steuerung eines doppeltwirkenden hydromotors
EP0080135B1 (en) * 1981-11-12 1986-01-22 Vickers Incorporated Hydraulic control system for a hydraulic actuator
DE3629479A1 (de) * 1985-09-03 1987-07-16 Barmag Barmer Maschf Wegeventil
EP0160265B1 (en) * 1984-04-30 1989-01-11 Vickers Incorporated Hydraulic control system
DE3841507C1 (enrdf_load_stackoverflow) * 1988-01-22 1989-06-29 Danfoss A/S, Nordborg, Dk
DE4342487B4 (de) * 1993-12-13 2005-03-31 Linde Ag Hydrostatisches Antriebssystem mit Nachsaugeventil

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU85774A1 (fr) * 1985-02-13 1985-07-24 Hydrolux Sarl Hydraulischer steuerblock
US5088384A (en) * 1989-08-30 1992-02-18 Vickers, Incorporated Hydraulic actuator controlled by meter-in valves and variable pressure relief valves
DE10216958B8 (de) * 2002-04-17 2004-07-08 Sauer-Danfoss (Nordborg) A/S Hydraulische Steuerung
US20060168955A1 (en) * 2005-02-03 2006-08-03 Schlumberger Technology Corporation Apparatus for hydraulically energizing down hole mechanical systems
EP3064654A4 (en) * 2013-10-31 2017-06-28 Volvo Construction Equipment AB Flow control valve for construction equipment, having floating function

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151455A (en) * 1963-05-16 1964-10-06 Hydraulic Unit Specialities Co Pilot operated control valve mechanism
DE1601729A1 (de) * 1966-07-06 1970-06-25 Hydraulic Unit Specialities Co Hydraulische Steuerventilanordnung
DE2002606A1 (de) * 1969-04-07 1970-10-15 Caterpillar Tractor Co Hydraulikkreis fuer Hochdruckgeraete
DE2412318A1 (de) * 1973-03-14 1974-09-19 Buehler Ag Geb Ventilanordnung zur steuerung eines reversiblen hydraulischen verbrauchers
DE2511228A1 (de) * 1974-03-22 1975-09-25 Tedeco Ag Ventilanordnung
DE2500096A1 (de) * 1975-01-03 1976-07-15 Sauer & Sohn Gmbh J Hydraulische schaltungsanordnung zur wegesteuerung mit konstantregelung eines hydrovolumenstromes
DE2853794A1 (de) * 1977-12-13 1979-06-21 Kobe Steel Ltd Antriebssteuerschaltkreis

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1936370A1 (de) * 1969-07-17 1971-02-04 Volkswagenwerk Ag Ventileinheit zur Steuerung von doppeltwirkenden Arbeitszylindern
DE2232857C2 (de) * 1972-07-05 1983-11-24 Robert Bosch Gmbh, 7000 Stuttgart Steuereinrichtung für ein hydraulisch angetriebenes Arbeitsgerät
US3991571A (en) * 1976-03-15 1976-11-16 Caterpillar Tractor Co. Fluid system of a work vehicle having fluid combining means and signal combining means

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151455A (en) * 1963-05-16 1964-10-06 Hydraulic Unit Specialities Co Pilot operated control valve mechanism
DE1601729A1 (de) * 1966-07-06 1970-06-25 Hydraulic Unit Specialities Co Hydraulische Steuerventilanordnung
DE2002606A1 (de) * 1969-04-07 1970-10-15 Caterpillar Tractor Co Hydraulikkreis fuer Hochdruckgeraete
DE2412318A1 (de) * 1973-03-14 1974-09-19 Buehler Ag Geb Ventilanordnung zur steuerung eines reversiblen hydraulischen verbrauchers
DE2511228A1 (de) * 1974-03-22 1975-09-25 Tedeco Ag Ventilanordnung
DE2500096A1 (de) * 1975-01-03 1976-07-15 Sauer & Sohn Gmbh J Hydraulische schaltungsanordnung zur wegesteuerung mit konstantregelung eines hydrovolumenstromes
DE2853794A1 (de) * 1977-12-13 1979-06-21 Kobe Steel Ltd Antriebssteuerschaltkreis

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039473A1 (de) * 1980-05-05 1981-11-11 Vickers Incorporated Hydraulisches Kraftübertragungssystem
EP0041199A1 (en) * 1980-05-29 1981-12-09 Sperry Corporation Power transmission
EP0080135B1 (en) * 1981-11-12 1986-01-22 Vickers Incorporated Hydraulic control system for a hydraulic actuator
DE3347000A1 (de) * 1983-12-24 1985-07-04 Robert Bosch Gmbh, 7000 Stuttgart Elektrohydraulische einrichtung zur steuerung eines doppeltwirkenden hydromotors
JPS60157501A (ja) * 1983-12-24 1985-08-17 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 複動液圧モ−タの制御用電気−液圧装置
EP0160265B1 (en) * 1984-04-30 1989-01-11 Vickers Incorporated Hydraulic control system
DE3629479A1 (de) * 1985-09-03 1987-07-16 Barmag Barmer Maschf Wegeventil
DE3841507C1 (enrdf_load_stackoverflow) * 1988-01-22 1989-06-29 Danfoss A/S, Nordborg, Dk
DE4342487B4 (de) * 1993-12-13 2005-03-31 Linde Ag Hydrostatisches Antriebssystem mit Nachsaugeventil

Also Published As

Publication number Publication date
IN154913B (enrdf_load_stackoverflow) 1984-12-22
IT8048246A0 (it) 1980-03-24
SE8002302L (sv) 1980-09-27
CA1142057A (en) 1983-03-01
SE8503569D0 (sv) 1985-07-23
SE455637B (sv) 1988-07-25
SE8503569L (sv) 1985-07-23
AU5682480A (en) 1980-10-02
FR2452618B1 (enrdf_load_stackoverflow) 1984-02-24
IT8948200A0 (it) 1989-07-18
NO800846L (no) 1980-09-29
GB2044366B (en) 1983-08-03
NO155211C (no) 1987-02-25
IT1221037B (it) 1990-06-21
GB2044366A (en) 1980-10-15
AU536970B2 (en) 1984-05-31
FR2452618A1 (fr) 1980-10-24
JPS6479405A (en) 1989-03-24
SE443409B (sv) 1986-02-24
NO155211B (no) 1986-11-17
IT1232358B (it) 1992-01-28

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8128 New person/name/address of the agent

Representative=s name: BLUMBACH, P., DIPL.-ING., 6200 WIESBADEN WESER, W.

8125 Change of the main classification

Ipc: F15B 11/04

8127 New person/name/address of the applicant

Owner name: VICKERS, INC., TROY, MICH., US

8139 Disposal/non-payment of the annual fee