JPS503124B1 - - Google Patents

Info

Publication number
JPS503124B1
JPS503124B1 JP5663170A JP5663170A JPS503124B1 JP S503124 B1 JPS503124 B1 JP S503124B1 JP 5663170 A JP5663170 A JP 5663170A JP 5663170 A JP5663170 A JP 5663170A JP S503124 B1 JPS503124 B1 JP S503124B1
Authority
JP
Japan
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
JP5663170A
Other languages
Japanese (ja)
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 filed Critical
Publication of JPS503124B1 publication Critical patent/JPS503124B1/ja
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/431—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like
    • E02F3/432—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude
    • E02F3/433—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude horizontal, e.g. self-levelling
    • 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
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/07—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors in distinct sequence
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
JP5663170A 1969-06-30 1970-06-30 Pending JPS503124B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83760569A 1969-06-30 1969-06-30

Publications (1)

Publication Number Publication Date
JPS503124B1 true JPS503124B1 (en) 1975-01-31

Family

ID=25274935

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5663170A Pending JPS503124B1 (en) 1969-06-30 1970-06-30

Country Status (4)

Country Link
US (1) US3563137A (en)
JP (1) JPS503124B1 (en)
DE (1) DE2029826A1 (en)
GB (1) GB1319482A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007321807A (en) * 2006-05-30 2007-12-13 Nabtesco Corp Hydraulic control device for loader

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827587A (en) * 1969-07-31 1974-08-06 Carrier Corp Automatic self-leveling forks
FR2140722A5 (en) * 1971-03-22 1973-01-19 Poclain Sa
US3765554A (en) * 1971-07-12 1973-10-16 Maxon Industries Self-loading truck
US3901264A (en) * 1972-03-06 1975-08-26 Gresen Manufacturing Co Adjustable flow control for hydraulic valves having high pressure main supply and controls fluid flow to cylinder and exhaust ports
US3856163A (en) * 1972-07-17 1974-12-24 Case Co J I Method of using a hydraulic leveling circuit on an implement
US3811587A (en) * 1972-07-17 1974-05-21 Case Co J I Hydraulic leveling circuit for implement
US3901395A (en) * 1973-07-11 1975-08-26 Case Co J I Implement stabilization method and apparatus
US4122868A (en) * 1975-01-24 1978-10-31 International Harvester Company Hydraulic valve assembly having an axial flow force balanced spool
US3987920A (en) * 1975-06-23 1976-10-26 J. I. Case Company Self-leveling system for material handling implement
US4126083A (en) * 1977-02-07 1978-11-21 Caterpillar Tractor Co. Attitude control for implement
US4354797A (en) * 1979-05-31 1982-10-19 Hitachi Construction Machinery Co., Ltd. Front loading hydraulic excavator
US4408518A (en) * 1981-03-17 1983-10-11 The Cessna Aircraft Company Series self-leveling valve
DE3420058A1 (en) * 1984-05-29 1985-12-05 Edelhoff Polytechnik GmbH & Co, 5860 Iserlohn MOTOR DRIVEN GAS COLLECTING VEHICLE WITH CONTAINERS DESIGNED AS INTERCHANGEABLE CONTAINERS
US4709618A (en) * 1985-10-02 1987-12-01 The Cessna Aircraft Company Series self-leveling valve with single spool for unloading and relief
US4815357A (en) * 1987-07-21 1989-03-28 Lull Corp. Adjustable divided flow self-leveling system
US4923362A (en) * 1988-06-06 1990-05-08 Deere & Company Bucket leveling system with dual fluid supply
US5275086A (en) * 1992-08-27 1994-01-04 Unlimited Solutions, Inc. Fluid actuator with internal pressure relief valve
US5447094A (en) * 1994-02-07 1995-09-05 Delta Power Hydraulic Co. Hydraulic system for bucket self-leveling during raising and lowering of boom
JP3542373B2 (en) * 1994-03-15 2004-07-14 三陽機器株式会社 Hydraulic circuit for working of cargo handling machinery
US5797310A (en) * 1997-01-29 1998-08-25 Eaton Corporation Dual self level valve
US5919026A (en) * 1997-06-02 1999-07-06 Kann Manufacturing Corporation Carry can discharge floor
US6308612B1 (en) 1998-09-24 2001-10-30 Delta Power Company Hydraulic leveling control system for a loader type vehicle
US6389953B1 (en) 1998-09-24 2002-05-21 Delta Power Company Hydraulic leveling control system for a loader type vehicle
JP3923242B2 (en) * 2000-07-14 2007-05-30 株式会社小松製作所 Actuator control device for hydraulic drive machine
WO2002029166A1 (en) * 2000-10-03 2002-04-11 Husco International, Inc. Two-way, self-level valve
US6647718B2 (en) * 2001-10-04 2003-11-18 Husco International, Inc. Electronically controlled hydraulic system for lowering a boom in an emergency
US6868672B2 (en) * 2003-05-13 2005-03-22 Sauer-Danfoss, Inc. Method of controlling a swinging boom and apparatus for controlling the same
JP3992644B2 (en) * 2003-05-19 2007-10-17 ナブテスコ株式会社 Multiple direction switching valve with bucket translation function
DE10325296A1 (en) * 2003-06-04 2004-12-23 Bosch Rexroth Ag Hydraulic control arrangement
JP4454967B2 (en) * 2003-06-12 2010-04-21 ナブテスコ株式会社 Shunt mechanism and valve device
JP5424213B2 (en) * 2007-07-18 2014-02-26 シェフラー テクノロジーズ アクチエンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト Pressure relief valve for hydraulic equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798626A (en) * 1953-11-19 1957-07-09 Clark Equipment Co Mechanism for materials handling machines
US3179120A (en) * 1963-05-24 1965-04-20 Koehring Co Proportional flow divider
US3251277A (en) * 1964-04-23 1966-05-17 Parker Hannifin Corp Fluid system and valve assembly therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007321807A (en) * 2006-05-30 2007-12-13 Nabtesco Corp Hydraulic control device for loader

Also Published As

Publication number Publication date
US3563137A (en) 1971-02-16
DE2029826A1 (en) 1971-01-21
GB1319482A (en) 1973-06-06

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