CA1133359A - Lock with variable length piston and hydraulic system for a work implement using the same - Google Patents

Lock with variable length piston and hydraulic system for a work implement using the same

Info

Publication number
CA1133359A
CA1133359A CA352,230A CA352230A CA1133359A CA 1133359 A CA1133359 A CA 1133359A CA 352230 A CA352230 A CA 352230A CA 1133359 A CA1133359 A CA 1133359A
Authority
CA
Canada
Prior art keywords
piston
valve
lock
fluid
pilot fluid
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.)
Expired
Application number
CA352,230A
Other languages
English (en)
French (fr)
Inventor
J.W. Burrows
Loyal O. Watts
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor 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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Application granted granted Critical
Publication of CA1133359A publication Critical patent/CA1133359A/en
Expired 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
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
    • E02F3/844—Drives or control devices therefor, e.g. hydraulic drive systems for positioning the blade, e.g. hydraulically
    • 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
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices

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)
CA352,230A 1979-08-30 1980-05-20 Lock with variable length piston and hydraulic system for a work implement using the same Expired CA1133359A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US93,072 1979-08-30
US06/093,072 US4286432A (en) 1979-08-30 1979-08-30 Lock valve with variable length piston and hydraulic system for a work implement using the same
USPCT79/00664 1979-08-30

Publications (1)

Publication Number Publication Date
CA1133359A true CA1133359A (en) 1982-10-12

Family

ID=22236819

Family Applications (1)

Application Number Title Priority Date Filing Date
CA352,230A Expired CA1133359A (en) 1979-08-30 1980-05-20 Lock with variable length piston and hydraulic system for a work implement using the same

Country Status (5)

Country Link
US (1) US4286432A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0025107A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS56501057A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1133359A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO (1) WO1981000600A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6178871B1 (en) 1998-06-25 2001-01-30 Tom Sutherland Actuator and method of operating same

Families Citing this family (33)

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US4505339A (en) * 1980-02-27 1985-03-19 Dresser Industries, Inc. Hydraulic control for a dozer blade
US4475641A (en) * 1981-10-21 1984-10-09 Allis-Chalmers Corporation Double acting hydraulic accumulator for power shift transmission
US4445666A (en) * 1981-11-16 1984-05-01 Hydra-Jack, Inc. Hydraulic jack device
US4461314A (en) * 1982-09-13 1984-07-24 Deere & Company Electrohydraulic valve
US4757840A (en) * 1987-07-27 1988-07-19 Deere & Company Multipiece spool valve
US5116188A (en) * 1987-09-16 1992-05-26 Kabushiki Kaisha Kobe Seiko Sho Vibration suppressing device for wheeled construction equipment
DE3900949A1 (de) * 1989-01-14 1990-07-19 Bw Hydraulik Gmbh Elektrohydraulische steuerung zum steuern eines hydraulischen antriebes
JPH0454352Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1989-08-29 1992-12-21
US5018935A (en) * 1989-11-09 1991-05-28 Deere & Company Automatic pressure relief system for a hydraulic motor
CA2047305A1 (en) * 1990-07-30 1992-01-31 Douglas M. Gage Hydraulic system for a work vehicle
US5575150A (en) * 1995-04-12 1996-11-19 Northrop Grumman Corporation Stiffness enhanced electrohydrostatic actuator
DE69614776T2 (de) * 1995-06-23 2002-04-18 New Holland Italia S.P.A., Modena Steuerventil für ein hydraulisches Lenksystem
FR2755481B1 (fr) * 1996-11-07 1998-12-24 Lohr Ind Dispositif de maintien en position et sous charge d'un verin hydraulique
JP3778634B2 (ja) 1996-11-22 2006-05-24 Ｓｍｃ株式会社 パイロットチェック弁付スピードコントローラ
DE19734658A1 (de) * 1997-08-11 1999-02-18 Mannesmann Rexroth Ag Hydraulische Steueranordnung für eine mobile Arbeitsmaschine, insbesondere für einen Radlader
US20030121258A1 (en) * 2001-12-28 2003-07-03 Kazunori Yoshino Hydraulic control system for reducing motor cavitation
US6836616B2 (en) 2002-02-14 2004-12-28 Valco Cincinnati, Inc. Molten material application machine
US6746326B2 (en) * 2002-04-29 2004-06-08 Dronningborg Industries A/S Hydraulic clutch
DE10224827A1 (de) * 2002-06-05 2004-01-08 Sauer-Danfoss (Nordborg) A/S Hydraulische Ventilanordnung
DE10227966A1 (de) * 2002-06-22 2004-01-08 Deere & Company, Moline Hydraulische Steueranordnung für eine mobile Arbeitsmaschine
ITGE20020064A1 (it) * 2002-07-16 2004-01-16 Ultraflex Spa Pompa oleodinamica per sistemi di guida per imbarcazioni
US6868772B2 (en) * 2002-10-08 2005-03-22 Imi Norgren, Inc. Fluid control valve
US7284471B2 (en) * 2004-12-02 2007-10-23 Sarcos Investments Lc Pressure control valve having intrinsic mechanical feedback system
KR100849500B1 (ko) * 2006-11-29 2008-07-31 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 플로팅 기능이 구비된 더블 체크밸브
EP2122185A1 (en) * 2007-02-28 2009-11-25 Raytheon Sarcos, LLC Antagonistic fluid control system for active and passive actuator operation
EP2122186A1 (en) * 2007-02-28 2009-11-25 Raytheon Sarcos, LLC Fluid control system having selective recruitable actuators
DE102007032415B3 (de) * 2007-07-12 2009-04-02 Sauer-Danfoss Aps Hydraulische Ventilanordnung
KR100915206B1 (ko) * 2007-09-20 2009-09-02 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 플로팅 기능이 구비된 더블 체크밸브
US8038094B2 (en) * 2008-03-31 2011-10-18 Honda Motor Co., Ltd. Hydraulic system for aircraft
WO2011145759A1 (ko) * 2010-05-18 2011-11-24 볼보 컨스트럭션 이큅먼트 에이비 건설기계용 더블 체크밸브
US20120152629A1 (en) * 2010-12-15 2012-06-21 Mather Daniel T Hydraulic system having load lock valve
CA2998893A1 (en) * 2017-03-23 2018-09-23 The Raymond Corporation Systems and methods for mast stabilization on a material handling vehicle
EP3505775A1 (en) * 2017-12-29 2019-07-03 Microtecnica S.r.l. Hydraulic no-back device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506008A (en) * 1947-01-17 1950-05-02 Bruno F Arps Hydraulic control valve
US2765622A (en) * 1950-04-27 1956-10-09 Ernest C Chasser Control mechanism for pump and motor fluid system
US3141388A (en) * 1961-03-27 1964-07-21 Cadillac Gage Co Linear actuator
US3264947A (en) * 1964-08-26 1966-08-09 Cadillac Gage Co Digital servo actuators
DE1952034A1 (de) * 1969-10-15 1971-04-22 Linde Ag Steuereinrichtung fuer eine hydraulische Anlage und Ventil hierzu
US4033236A (en) * 1971-12-27 1977-07-05 Caterpillar Tractor Co. All hydraulic motor grader circuitry
US3857404A (en) * 1973-04-30 1974-12-31 Caterpillar Tractor Co Hydraulically operated lock valve assembly
US3872670A (en) * 1973-05-02 1975-03-25 Caterpillar Tractor Co Selectively actuatable shock absorbing system for an implement control circuit
GB1394929A (en) * 1973-06-18 1975-05-21 Capilano Eng Co Ltd Hydraulic direction-control valve
US4037671A (en) * 1973-07-03 1977-07-26 Atlas Copco Aktiebolag Drill boom with hydraulic parallel motion means
US3908515A (en) * 1973-09-10 1975-09-30 Caterpillar Tractor Co Hydraulic circuit with selectively actuatable float control
US3933167A (en) * 1974-02-20 1976-01-20 Tomco, Inc. Pilot operated check valve
US3974742A (en) * 1974-10-31 1976-08-17 Caterpillar Tractor Co. Lock valve assembly
DE2535751C3 (de) 1975-08-11 1983-04-07 7990 Friedrichshafen Zahnradfabrik Friedrichshafen Ag Hydrostatische Lenkeinrichtung, insbesondere für Land- und Wasserfahrzeuge
IT1073144B (it) * 1976-10-28 1985-04-13 Welko Ind Spa Apparecchiatura idraulica per l'alimentazione di liquido a due differenti pressioni ad un dispositivo idraulico
US4081053A (en) * 1976-11-19 1978-03-28 Terry McDermid Lock valve for double acting cylinder
US4145886A (en) * 1977-06-13 1979-03-27 Johnson & Bassett, Inc. Tank supply fail safe
US4192338A (en) * 1978-05-15 1980-03-11 Gerulis Benedict R Hydraulic lock-out device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6178871B1 (en) 1998-06-25 2001-01-30 Tom Sutherland Actuator and method of operating same

Also Published As

Publication number Publication date
WO1981000600A1 (en) 1981-03-05
US4286432A (en) 1981-09-01
JPS56501057A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-07-30
EP0025107A1 (en) 1981-03-18

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Legal Events

Date Code Title Description
MKEX Expiry