IT999089B - Perfezionamenti nei mezzi di comando di apparati azionatori idraulici - Google Patents

Perfezionamenti nei mezzi di comando di apparati azionatori idraulici

Info

Publication number
IT999089B
IT999089B IT7330741A IT3074173A IT999089B IT 999089 B IT999089 B IT 999089B IT 7330741 A IT7330741 A IT 7330741A IT 3074173 A IT3074173 A IT 3074173A IT 999089 B IT999089 B IT 999089B
Authority
IT
Italy
Prior art keywords
control means
hydraulic actuating
actuating devices
devices
hydraulic
Prior art date
Application number
IT7330741A
Other languages
English (en)
Original Assignee
Sperry Rand 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.)
Filing date
Publication date
Application filed by Sperry Rand Ltd filed Critical Sperry Rand Ltd
Application granted granted Critical
Publication of IT999089B publication Critical patent/IT999089B/it

Links

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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y10T137/2554—Reversing or 4-way valve systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86606—Common to plural valve motor chambers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86614—Electric

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Servomotors (AREA)
IT7330741A 1972-11-08 1973-10-30 Perfezionamenti nei mezzi di comando di apparati azionatori idraulici IT999089B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5147172A GB1406326A (en) 1972-11-08 1972-11-08 Hydraulic actuator controls disazo pigment

Publications (1)

Publication Number Publication Date
IT999089B true IT999089B (it) 1976-02-20

Family

ID=10460156

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7330741A IT999089B (it) 1972-11-08 1973-10-30 Perfezionamenti nei mezzi di comando di apparati azionatori idraulici

Country Status (8)

Country Link
US (1) US3874269A (it)
JP (1) JPS5312031B2 (it)
CA (1) CA988811A (it)
DE (1) DE2355430C2 (it)
FR (1) FR2205632B1 (it)
GB (1) GB1406326A (it)
IT (1) IT999089B (it)
SE (1) SE402803B (it)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1462879A (en) * 1973-10-10 1977-01-26 Sperry Rand Ltd Hydraulic actuator controls
DE2461021A1 (de) * 1974-12-21 1976-06-24 Bosch Gmbh Robert Vorrichtung zur steuerung wenigstens einer hydraulischen stelleinrichtung
US3943957A (en) * 1975-03-17 1976-03-16 Sanders Associates, Inc. Flow control valve with internal rate of flow feedback
JPS529781A (en) * 1975-07-12 1977-01-25 Hitachi Constr Mach Co Ltd Hydraulic system for control function
US4619186A (en) * 1977-09-03 1986-10-28 Vickers, Incorporated Pressure relief valves
US4250794A (en) * 1978-03-31 1981-02-17 Caterpillar Tractor Co. High pressure hydraulic system
FR2435187A1 (fr) * 1978-09-08 1980-04-04 Renault Dispositif de relevage electrohydraulique d'outils agraires
GB2050646B (en) * 1979-06-15 1983-04-13 Sperry Rand Corp Hydraulic actuator controls
US4413648A (en) * 1979-07-26 1983-11-08 Sperry Limited Hydraulic valves
DE3008929A1 (de) * 1980-03-08 1981-09-24 Schloemann-Siemag AG, 4000 Düsseldorf Sicherheitssteuereinrichtung fuer hydraulisch gehaltene lasten gegen unkontrolliertes absenken und heben, beispielsweise an vertikalen pressen oder lasten haltenden einrichtungen
DE3017080C2 (de) * 1980-05-03 1985-11-28 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Elektrohydraulischer Stellantrieb
US4362089A (en) * 1980-06-16 1982-12-07 Caterpillar Tractor Co. Valve system
WO1981003689A1 (en) * 1980-06-16 1981-12-24 Caterpillar Tractor Co Valve system
ZA825477B (en) * 1981-08-21 1983-06-29 Sperry Corp Hydraulic control system
JPS5877905A (ja) * 1981-09-02 1983-05-11 プル−テク・リミテツド 液圧制御弁
AU1587183A (en) * 1982-07-02 1984-01-05 Sperry Corp. Hydraulic valve with dual feedback control
GB2138897B (en) * 1983-04-29 1986-09-10 Aisin Warner Kabushiki Kaishi An automatic transmission for a vehicle
US5056561A (en) * 1990-02-08 1991-10-15 Byers James O Remote controlled, individually pressure compensated valve
US5775198A (en) * 1997-03-07 1998-07-07 Alliedsignal Inc. Control system for a limited stall load activator
CN100590324C (zh) * 2006-10-16 2010-02-17 太原理工大学 先导比例方向节流阀
KR101500744B1 (ko) * 2008-11-19 2015-03-09 두산인프라코어 주식회사 건설기계의 붐 실린더 제어회로
KR101877988B1 (ko) 2011-12-28 2018-07-12 두산인프라코어 주식회사 건설기계의 붐 실린더 제어회로
DE102013206254A1 (de) * 2013-04-10 2014-10-16 Zf Friedrichshafen Ag Ventilsystem zur Ansteuerung eines Systemdruckregelsystems
DE102015116764A1 (de) * 2015-10-02 2017-04-06 Linde Hydraulics Gmbh & Co. Kg Hydraulisches Konstantdrucksystem für eine mobile Arbeitsmaschine
US11540942B2 (en) * 2018-07-26 2023-01-03 Alcon Inc. Redundant pneumatic circuit for reliability enhancement of vitrectomy instruments
CN111022408B (zh) * 2020-01-06 2021-11-12 合肥工业大学 一种具有回油路补偿负载敏感功能的组合阀

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003474A (en) * 1961-10-10 Hydraulic control system with flow
US3038498A (en) * 1956-09-25 1962-06-12 Borg Warner Hydraulic amplifier
US2944530A (en) * 1959-04-29 1960-07-12 Alfred C Johnson Pneumatic control means for reciprocable pistons
FR1361466A (fr) * 1963-04-09 1964-05-22 Hispano Suiza Sa Perfectionnements apportés aux installations de commande hydraulique à appareils récepteurs à double effet
US3555970A (en) * 1968-08-08 1971-01-19 Bell Aerospace Corp Pressure regulator for servo valve having dynamic load adaptive response
US3555969A (en) * 1968-08-08 1971-01-19 Bell Aerospace Corp Servovalve having dynamic load adaptive response while maintaining static performance unaffected
SE360190B (it) * 1970-01-05 1973-09-17 Sperry Rand Ltd
CA943040A (en) * 1970-10-06 1974-03-05 Ronald B. Walters Hydraulic actuator controls

Also Published As

Publication number Publication date
JPS5312031B2 (it) 1978-04-26
CA988811A (en) 1976-05-11
DE2355430A1 (de) 1974-05-16
SE402803B (sv) 1978-07-17
JPS4995091A (it) 1974-09-10
GB1406326A (en) 1975-09-17
FR2205632B1 (it) 1977-05-27
FR2205632A1 (it) 1974-05-31
AU6199473A (en) 1975-05-01
DE2355430C2 (de) 1984-11-22
US3874269A (en) 1975-04-01

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