EP0352654A3 - Electrically controlled auxiliary hydraulic system for a skid steer loader - Google Patents

Electrically controlled auxiliary hydraulic system for a skid steer loader Download PDF

Info

Publication number
EP0352654A3
EP0352654A3 EP89113432A EP89113432A EP0352654A3 EP 0352654 A3 EP0352654 A3 EP 0352654A3 EP 89113432 A EP89113432 A EP 89113432A EP 89113432 A EP89113432 A EP 89113432A EP 0352654 A3 EP0352654 A3 EP 0352654A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic system
electrically controlled
auxiliary hydraulic
skid steer
steer loader
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.)
Granted
Application number
EP89113432A
Other versions
EP0352654A2 (en
EP0352654B1 (en
Inventor
Joseph M. Mather
Scott B. Jacobson
Thomas Q. Haeder
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.)
Doosan Bobcat North America Inc
Original Assignee
Clark Equipment Co
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 Clark Equipment Co filed Critical Clark Equipment Co
Publication of EP0352654A2 publication Critical patent/EP0352654A2/en
Publication of EP0352654A3 publication Critical patent/EP0352654A3/en
Application granted granted Critical
Publication of EP0352654B1 publication Critical patent/EP0352654B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
EP19890113432 1988-07-27 1989-07-21 Electrically controlled auxiliary hydraulic system for a skid steer loader Expired - Lifetime EP0352654B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22464388A 1988-07-27 1988-07-27
US224643 1998-12-31

Publications (3)

Publication Number Publication Date
EP0352654A2 EP0352654A2 (en) 1990-01-31
EP0352654A3 true EP0352654A3 (en) 1990-03-28
EP0352654B1 EP0352654B1 (en) 1994-01-05

Family

ID=22841539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890113432 Expired - Lifetime EP0352654B1 (en) 1988-07-27 1989-07-21 Electrically controlled auxiliary hydraulic system for a skid steer loader

Country Status (5)

Country Link
EP (1) EP0352654B1 (en)
JP (1) JP2696402B2 (en)
AU (1) AU620109B2 (en)
CA (1) CA1336203C (en)
DE (1) DE68912013T2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9108011D0 (en) * 1991-04-16 1991-06-05 Craig Tractor Services Limited Road sweeping apparatus
US5957213A (en) * 1996-05-30 1999-09-28 Clark Equipment Company Intelligent attachment to a power tool
US5711391A (en) * 1996-06-17 1998-01-27 Clark Equipment Company Auxiliary interlock control system for power machine
US6662881B2 (en) 2001-06-19 2003-12-16 Sweepster, Llc Work attachment for loader vehicle having wireless control over work attachment actuator
KR100527378B1 (en) * 2003-06-25 2005-11-09 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 hydraulic circuit of option device of heavy equipment of having spool boom joint
KR100559291B1 (en) * 2003-06-25 2006-03-15 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 hydraulic circuit of option device of heavy equipment
FR2900693B1 (en) * 2006-05-02 2008-07-04 Etude Et D Innovation Dans Le DEVICE FOR HYDRAULIC CONTROL OF MACHINE JACKS AND APPLICATIONS
US10940901B2 (en) 2015-07-07 2021-03-09 Yanmar Power Technology Co., Ltd. Tractor
CN113757203B (en) * 2021-09-13 2022-04-15 徐工集团工程机械股份有限公司科技分公司 Loader electric control hydraulic system and loader

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279637A (en) * 1964-09-08 1966-10-18 Robert A Olson Hydraulic drive control mechanism for vehicles
US3319817A (en) * 1965-07-01 1967-05-16 Universal Mfg Company Self-propelled loader
US3606048A (en) * 1969-09-05 1971-09-20 Long Mfg Co Inc Vehicle having front,central and rear implements
US4050596A (en) * 1975-07-24 1977-09-27 Control Concepts, Inc. Electrohydraulic valve assembly for front end loader attachment to farm tractor
GB1558604A (en) * 1976-07-07 1980-01-09 Inst Cercetare Si Proiectare T Skid-steer loader
GB2186999A (en) * 1986-02-12 1987-08-26 Kubota Ltd Control apparatus and proportional solenoid valve control circuit for boom-equipped working implement
US4712376A (en) * 1986-10-22 1987-12-15 Caterpillar Inc. Proportional valve control apparatus for fluid systems

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279637A (en) * 1964-09-08 1966-10-18 Robert A Olson Hydraulic drive control mechanism for vehicles
US3319817A (en) * 1965-07-01 1967-05-16 Universal Mfg Company Self-propelled loader
US3606048A (en) * 1969-09-05 1971-09-20 Long Mfg Co Inc Vehicle having front,central and rear implements
US4050596A (en) * 1975-07-24 1977-09-27 Control Concepts, Inc. Electrohydraulic valve assembly for front end loader attachment to farm tractor
GB1558604A (en) * 1976-07-07 1980-01-09 Inst Cercetare Si Proiectare T Skid-steer loader
GB2186999A (en) * 1986-02-12 1987-08-26 Kubota Ltd Control apparatus and proportional solenoid valve control circuit for boom-equipped working implement
US4712376A (en) * 1986-10-22 1987-12-15 Caterpillar Inc. Proportional valve control apparatus for fluid systems

Also Published As

Publication number Publication date
EP0352654A2 (en) 1990-01-31
JP2696402B2 (en) 1998-01-14
EP0352654B1 (en) 1994-01-05
JPH0270838A (en) 1990-03-09
DE68912013D1 (en) 1994-02-17
AU620109B2 (en) 1992-02-13
AU3706289A (en) 1990-02-01
CA1336203C (en) 1995-07-04
DE68912013T2 (en) 1994-08-04

Similar Documents

Publication Publication Date Title
AU2886489A (en) Control system for load-sensing hydraulic drive circuit
GB2207194B (en) Control system for an hydraulic excavator
AU568261B2 (en) Pitch control system for a skid steer-vehicles
AU3370889A (en) Technique for steering a downhole hammer
KR960009500B1 (en) Engine cooling system for skid steer loaders
EP0349116A3 (en) Electromagnetic control apparatus for varying the driver steering effort of a hydraulic power steering apparatus
EP0368321A3 (en) A hydraulic suspension system for a vehicle
GB9120998D0 (en) Hydraulic steering system for a vehicle
GB2156005B (en) Hydraulic control package for a marine steering system
EP0311779A3 (en) Hydraulic control system for a press
DE3369362D1 (en) Control arrangement for a hydraulic assist turbocharger
EP0352654A3 (en) Electrically controlled auxiliary hydraulic system for a skid steer loader
GB2296232B (en) Boom Locking Device for a Skid Steer Loader
GB2075934B (en) A hydraulic control system especially a steering system
GB2224780B (en) Hydraulic control circuit for a motor vehicle
GB2222895B (en) Hydraulic circuit structure for a working vehicle
AU647996B1 (en) Hydraulic control system for a tractor
GB2236166B (en) Hydraulic control system for operation of a reversible hydraulic motor
GB8818161D0 (en) Hydraulic steering system
AU108448S (en) A skid steer loader
AU105383S (en) A tracked skid steer loader
PL253126A2 (en) Hydraulic steering system for self-propelled articulated machines
AU2598592A (en) Removable drive system for a skid steer loader
GB8906436D0 (en) A progressively controlled hydraulic steering device
AU5658990A (en) Independent drive controls for skid steer loader

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE DE FR GB IT

17P Request for examination filed

Effective date: 19900607

17Q First examination report despatched

Effective date: 19910917

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILA

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT

REF Corresponds to:

Ref document number: 68912013

Country of ref document: DE

Date of ref document: 19940217

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010801

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010802

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010803

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010903

Year of fee payment: 13

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020721

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

BERE Be: lapsed

Owner name: *CLARK EQUIPMENT CY

Effective date: 20020731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020721

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050721