JPS58501781A - 油圧弁手段 - Google Patents

油圧弁手段

Info

Publication number
JPS58501781A
JPS58501781A JP57503032A JP50303282A JPS58501781A JP S58501781 A JPS58501781 A JP S58501781A JP 57503032 A JP57503032 A JP 57503032A JP 50303282 A JP50303282 A JP 50303282A JP S58501781 A JPS58501781 A JP S58501781A
Authority
JP
Japan
Prior art keywords
valve
pressure
pilot
flow
valves
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.)
Pending
Application number
JP57503032A
Other languages
English (en)
Japanese (ja)
Inventor
アンデルソン・ボ−
Original Assignee
アンデルソン　ポ−
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20344644&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS58501781(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by アンデルソン　ポ− filed Critical アンデルソン　ポ−
Publication of JPS58501781A publication Critical patent/JPS58501781A/ja
Pending legal-status Critical Current

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
    • F15B11/00—Servomotor systems without provision for follow-up action ; Circuits therefor
    • F15B11/006—Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link
    • 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
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet 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
    • F15B2211/20—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
    • 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
    • F15B2211/3056—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
    • F15B2211/30575—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 in a Wheatstone Bridge arrangement (also half bridges)
    • 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
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3127—Floating position connecting the working ports and 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3133—Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
    • 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
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/329—Directional 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
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow 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
    • F15B2211/365—Directional control combined with flow control and 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
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • 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
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • 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
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • Y10T137/87201—Common to plural valve motor chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Fluid-Driven Valves (AREA)
  • Servomotors (AREA)
  • Valve Device For Special Equipments (AREA)
  • Braking Systems And Boosters (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Flow Control (AREA)
  • Multiple-Way Valves (AREA)
  • Control Of Fluid Pressure (AREA)
JP57503032A 1981-09-28 1982-09-27 油圧弁手段 Pending JPS58501781A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE81057192ODK 1981-09-28
SE8105719A SE439342C (sv) 1981-09-28 1981-09-28 Ventilanordning för styrning av en linjär eller roterande hydraulmotor

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP1149292A Division JPH0231003A (ja) 1981-09-28 1989-06-12 シート弁装置

Publications (1)

Publication Number Publication Date
JPS58501781A true JPS58501781A (ja) 1983-10-20

Family

ID=20344644

Family Applications (2)

Application Number Title Priority Date Filing Date
JP57503032A Pending JPS58501781A (ja) 1981-09-28 1982-09-27 油圧弁手段
JP1149292A Granted JPH0231003A (ja) 1981-09-28 1989-06-12 シート弁装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP1149292A Granted JPH0231003A (ja) 1981-09-28 1989-06-12 シート弁装置

Country Status (10)

Country Link
US (2) US4535809A (cg-RX-API-DMAC10.html)
EP (3) EP0270523B1 (cg-RX-API-DMAC10.html)
JP (2) JPS58501781A (cg-RX-API-DMAC10.html)
AT (2) ATE87713T1 (cg-RX-API-DMAC10.html)
AU (1) AU556391B2 (cg-RX-API-DMAC10.html)
DE (2) DE3280434T2 (cg-RX-API-DMAC10.html)
DK (1) DK161850C (cg-RX-API-DMAC10.html)
FI (1) FI74782C (cg-RX-API-DMAC10.html)
SE (1) SE439342C (cg-RX-API-DMAC10.html)
WO (1) WO1983001095A1 (cg-RX-API-DMAC10.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02163503A (ja) * 1988-12-17 1990-06-22 Shin Caterpillar Mitsubishi Ltd 負荷圧力補償型ロジック弁の制御回路
WO1994010456A1 (fr) * 1992-10-29 1994-05-11 Hitachi Construction Machinery Co., Ltd. Dispositif a soupapes de regulation hydraulique et dispositif a entrainement hydraulique
JP2010144928A (ja) * 2008-12-22 2010-07-01 Incova Technologies Inc 電気油圧ポペットパイロット弁によって操作されるポペット弁

Families Citing this family (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331883A (en) * 1981-09-28 1994-07-26 Bo Andersson Hydraulic valve means
JPS61124702A (ja) * 1984-11-22 1986-06-12 Komatsu Ltd 油圧制御装置
LU85774A1 (fr) * 1985-02-13 1985-07-24 Hydrolux Sarl Hydraulischer steuerblock
US5255705A (en) * 1986-01-30 1993-10-26 Kabushiki Kaisha Komatsu Seisakusho Hydraulic pressure control system
US5253672A (en) * 1986-01-30 1993-10-19 Kabushiki Kaisha Komatsu Seisakusho Hydraulic pressure control system
EP0231876B1 (en) * 1986-01-30 1991-05-22 Kabushiki Kaisha Komatsu Seisakusho Hydraulic pressure control system
AU603907B2 (en) * 1987-06-30 1990-11-29 Hitachi Construction Machinery Co. Ltd. Hydraulic drive system
DE3883690T2 (de) * 1987-10-05 1994-03-17 Hitachi Construction Machinery Hydraulisches Antriebssystem.
SE459271B (sv) * 1987-10-27 1989-06-19 Bahco Hydrauto Ab Tryckmediumventil
EP0354972B1 (en) * 1988-02-24 1994-06-01 Hitachi Construction Machinery Co., Ltd. Valve device
KR920006546B1 (ko) * 1988-03-23 1992-08-08 히다찌 겐끼 가부시기가이샤 유압구동장치
DE68910940T2 (de) * 1988-05-10 1994-04-21 Hitachi Construction Machinery Hydraulische antriebseinheit für baumaschinen.
EP0341650B1 (en) * 1988-05-12 1993-11-18 Hitachi Construction Machinery Co., Ltd. Hydraulic drive system for crawler-mounted construction vehicle
JP2706483B2 (ja) * 1988-09-28 1998-01-28 日立建機株式会社 圧力制御弁
SE462349B (sv) * 1988-11-15 1990-06-11 Bahco Hydrauto Ab Tryckmediumventil
SE463575B (sv) * 1989-04-25 1990-12-10 Bahco Hydrauto Ab Hydraulventil
DE4027047A1 (de) * 1990-08-27 1992-03-05 Rexroth Mannesmann Gmbh Ventilanordnung zur lastunabhaengigen steuerung mehrerer hydraulischer verbraucher
US5137254A (en) * 1991-09-03 1992-08-11 Caterpillar Inc. Pressure compensated flow amplifying poppet valve
US5176171A (en) * 1991-10-17 1993-01-05 Flomatic Corporation Check valve
US5645263A (en) * 1993-10-04 1997-07-08 Caterpillar Inc. Pilot valve for a flow amplyifying poppet valve
WO1995028718A1 (en) 1994-04-14 1995-10-26 Hitachi Maxell, Ltd. Magnetic powder and its manufacture and application
JP3323349B2 (ja) † 1994-12-27 2002-09-09 エスエムシー株式会社 切換弁集合体
GB2335511B (en) * 1998-03-20 2002-01-30 Aeroquip Vickers Ltd Hydraulic control means
US6293181B1 (en) 1998-04-16 2001-09-25 Caterpillar Inc. Control system providing a float condition for a hydraulic cylinder
US6089528A (en) * 1998-12-18 2000-07-18 Caterpillar Inc. Poppet valve control with sealing element providing improved load drift control
US6691604B1 (en) 1999-09-28 2004-02-17 Caterpillar Inc Hydraulic system with an actuator having independent meter-in meter-out control
JP3390413B2 (ja) 2000-08-07 2003-03-24 株式会社キャットアイ ヘッドランプ
JP3390412B2 (ja) 2000-08-07 2003-03-24 株式会社キャットアイ ヘッドランプ
US6502500B2 (en) 2001-04-30 2003-01-07 Caterpillar Inc Hydraulic system for a work machine
DE10124154B4 (de) * 2001-05-17 2012-05-24 Bosch Rexroth Aktiengesellschaft Stromregelventil
US6598849B2 (en) * 2001-12-21 2003-07-29 Cooper Cameron Corporation Pressure compensation/control for fail-safe gate valve
JP4230806B2 (ja) * 2003-04-14 2009-02-25 株式会社不二工機 電動弁
US7121189B2 (en) * 2004-09-29 2006-10-17 Caterpillar Inc. Electronically and hydraulically-actuated drain value
US7146808B2 (en) * 2004-10-29 2006-12-12 Caterpillar Inc Hydraulic system having priority based flow control
US7204084B2 (en) * 2004-10-29 2007-04-17 Caterpillar Inc Hydraulic system having a pressure compensator
US7441404B2 (en) 2004-11-30 2008-10-28 Caterpillar Inc. Configurable hydraulic control system
US7243493B2 (en) * 2005-04-29 2007-07-17 Caterpillar Inc Valve gradually communicating a pressure signal
US7204185B2 (en) * 2005-04-29 2007-04-17 Caterpillar Inc Hydraulic system having a pressure compensator
US7302797B2 (en) * 2005-05-31 2007-12-04 Caterpillar Inc. Hydraulic system having a post-pressure compensator
US7194856B2 (en) * 2005-05-31 2007-03-27 Caterpillar Inc Hydraulic system having IMV ride control configuration
US7331175B2 (en) * 2005-08-31 2008-02-19 Caterpillar Inc. Hydraulic system having area controlled bypass
US7210396B2 (en) * 2005-08-31 2007-05-01 Caterpillar Inc Valve having a hysteretic filtered actuation command
US7251935B2 (en) * 2005-08-31 2007-08-07 Caterpillar Inc Independent metering valve control system and method
US7614336B2 (en) * 2005-09-30 2009-11-10 Caterpillar Inc. Hydraulic system having augmented pressure compensation
US20100043418A1 (en) * 2005-09-30 2010-02-25 Caterpillar Inc. Hydraulic system and method for control
US7320216B2 (en) * 2005-10-31 2008-01-22 Caterpillar Inc. Hydraulic system having pressure compensated bypass
US8418989B2 (en) * 2006-12-21 2013-04-16 M-I L.L.C. Pressure-balanced choke system
US20080295681A1 (en) * 2007-05-31 2008-12-04 Caterpillar Inc. Hydraulic system having an external pressure compensator
US8479504B2 (en) * 2007-05-31 2013-07-09 Caterpillar Inc. Hydraulic system having an external pressure compensator
US7621211B2 (en) * 2007-05-31 2009-11-24 Caterpillar Inc. Force feedback poppet valve having an integrated pressure compensator
US8631650B2 (en) 2009-09-25 2014-01-21 Caterpillar Inc. Hydraulic system and method for control
DE102012007108A1 (de) 2012-04-07 2013-10-10 Robert Bosch Gmbh Valvistoranordnung
DE102013004437A1 (de) * 2013-02-20 2014-08-21 Robert Bosch Gmbh Hydraulisches Sicherheits- und Bewegungsregelsystem
US20140358303A1 (en) * 2013-06-03 2014-12-04 Tescom Corporation Method and Apparatus for Stabilizing Pressure in an Intelligent Regulator Assembly
CN109488652B (zh) * 2018-12-21 2020-06-02 潍柴动力股份有限公司 一种阀芯闭环控制结构及液压控制阀
DE102022207208B4 (de) * 2022-07-14 2026-02-19 Hawe Hydraulik Se Hydraulikventil
SE547765C2 (en) 2024-02-10 2025-11-25 Pmc Hydraulics Ab A valve arrangement for controlling a hydraulic actuator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US29292A (en) * 1860-07-24 James m o n t e i t h
US1046236A (en) * 1909-09-15 1912-12-03 Fritz Wagner Means for obviating the vibrations of main pressure-actuated valves.
GB767823A (en) * 1953-08-04 1957-02-06 British Messier Ltd Improvements in or relating to electromagnetically-operated fluid control valves
BE630417A (cg-RX-API-DMAC10.html) * 1961-11-17 1900-01-01
US3411536A (en) * 1966-07-06 1968-11-19 Koehring Co Pilot operated control valve mechanism
US3710824A (en) * 1971-05-07 1973-01-16 Caterpillar Tractor Co High pressure relief valve
USRE29292E (en) 1971-05-20 1977-07-05 Sundstrand Corporation Control valve means for fluid motors
US3730219A (en) * 1971-05-20 1973-05-01 Hydraulic Industries Control valve means for fluid motors
US4012031A (en) * 1975-03-25 1977-03-15 Affiliated Hospital Products, Inc. Lock valve flow control arrangement
DE2639331C2 (de) * 1976-09-01 1982-09-23 Wolfgang 7114 Pfedelbach Steinigen Hydraulische oder pneumatische Drei-Wege-Weiche
DE2905178C2 (de) * 1979-02-10 1984-11-08 Institut gornogo dela imeni A.A. Skočinskogo, Ljuberzy, Moskovskaja oblast Bremsventil zur gesteuerten Entlastung eines Hochdruckraums
DE3011233A1 (de) * 1979-03-26 1980-10-09 Sperry Corp Vorgesteuertes druckbegrenzungsventil

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02163503A (ja) * 1988-12-17 1990-06-22 Shin Caterpillar Mitsubishi Ltd 負荷圧力補償型ロジック弁の制御回路
WO1994010456A1 (fr) * 1992-10-29 1994-05-11 Hitachi Construction Machinery Co., Ltd. Dispositif a soupapes de regulation hydraulique et dispositif a entrainement hydraulique
US5433076A (en) * 1992-10-29 1995-07-18 Hitachi Construction Machinery Co., Ltd. Hydraulic control valve apparatus and hydraulic drive system
JP2010144928A (ja) * 2008-12-22 2010-07-01 Incova Technologies Inc 電気油圧ポペットパイロット弁によって操作されるポペット弁

Also Published As

Publication number Publication date
DK161850C (da) 1992-01-20
WO1983001095A1 (en) 1983-03-31
EP0283053A3 (en) 1989-11-02
FI831901A0 (fi) 1983-05-27
EP0270523A3 (en) 1989-10-25
FI74782B (fi) 1987-11-30
SE439342B (sv) 1985-06-10
US4662601A (en) 1987-05-05
SE8105719L (sv) 1983-03-29
EP0283053A2 (en) 1988-09-21
ATE85674T1 (de) 1993-02-15
DK161850B (da) 1991-08-19
DE3280434D1 (de) 1993-05-06
DE3280429D1 (de) 1993-03-25
DK241383A (da) 1983-05-27
SE439342C (sv) 1996-11-18
DK241383D0 (da) 1983-05-27
EP0283053B1 (en) 1993-02-10
EP0079870A2 (en) 1983-05-25
FI831901L (fi) 1983-05-27
JPH0231003A (ja) 1990-02-01
DE3280429T2 (de) 1993-06-03
FI74782C (fi) 1988-03-10
EP0270523A2 (en) 1988-06-08
JPH0428922B2 (cg-RX-API-DMAC10.html) 1992-05-15
DE3280434T2 (de) 1993-07-08
EP0079870A3 (en) 1984-03-28
EP0270523B1 (en) 1993-03-31
AU8993782A (en) 1983-04-08
US4535809A (en) 1985-08-20
ATE87713T1 (de) 1993-04-15
EP0079870B1 (en) 1988-10-26
AU556391B2 (en) 1986-10-30

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