CA968254A - Hydraulic self-leveling valve device for a loader bucket - Google Patents

Hydraulic self-leveling valve device for a loader bucket

Info

Publication number
CA968254A
CA968254A CA156,371A CA156371A CA968254A CA 968254 A CA968254 A CA 968254A CA 156371 A CA156371 A CA 156371A CA 968254 A CA968254 A CA 968254A
Authority
CA
Canada
Prior art keywords
valve device
leveling valve
loader bucket
hydraulic self
hydraulic
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
CA156,371A
Other versions
CA156371S (en
Inventor
Robert J. Oliver
Rudolph E. Yeh
Richard J. Bromberek
Gale A. Holloway
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.)
Navistar Inc
Original Assignee
International Harverster Corp
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 International Harverster Corp filed Critical International Harverster Corp
Application granted granted Critical
Publication of CA968254A publication Critical patent/CA968254A/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
    • E02F3/28—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
CA156,371A 1972-05-02 1972-11-14 Hydraulic self-leveling valve device for a loader bucket Expired CA968254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24960472A 1972-05-02 1972-05-02

Publications (1)

Publication Number Publication Date
CA968254A true CA968254A (en) 1975-05-27

Family

ID=22944210

Family Applications (1)

Application Number Title Priority Date Filing Date
CA156,371A Expired CA968254A (en) 1972-05-02 1972-11-14 Hydraulic self-leveling valve device for a loader bucket

Country Status (5)

Country Link
US (1) US3792792A (en)
JP (1) JPS5749689B2 (en)
CA (1) CA968254A (en)
FR (1) FR2183004B1 (en)
GB (1) GB1426357A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112482462A (en) * 2020-11-16 2021-03-12 广西柳工机械股份有限公司 Control method and system for shovel loading preparation of loader

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372729A (en) * 1980-07-21 1983-02-08 Veda, Inc. Tilt control
US4452559A (en) * 1982-09-03 1984-06-05 J.I. Case Company Attachment assembly for bellcrank arm
GB8510145D0 (en) * 1985-04-20 1985-05-30 Kombilift Ltd Load lifting apparatus
JPH04127091U (en) * 1991-05-10 1992-11-19 三菱重工業株式会社 Inboard weld inspection device
US10047502B2 (en) * 2015-12-10 2018-08-14 Caterpillar Inc. System and method for controlling a work implement of a machine
KR20210126722A (en) 2019-02-22 2021-10-20 클라크 이큅먼트 컴파니 Hydraulic leveling circuit for power machinery

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731162A (en) * 1953-11-19 1956-01-17 Superior Separator Company Loader with self-leveling carrier
US2883077A (en) * 1956-02-23 1959-04-21 John S Pilch Bucket control for loader or the like
GB783846A (en) * 1956-05-22 1957-10-02 Max Knobel Improved bucket scoop loader
US3009590A (en) * 1957-05-29 1961-11-21 Hough Co Frank Tractor loader
US2914202A (en) * 1957-09-16 1959-11-24 Mixermobile Manufacturers Inc Loader vehicle
US3032215A (en) * 1958-08-29 1962-05-01 Deere & Co Loader bucket leveling control
DE1100555B (en) * 1958-10-16 1961-02-23 Meiller Fahrzeuge Hydraulic control device for keeping the loading shovel of overhead loaders parallel
US3120314A (en) * 1960-10-11 1964-02-04 Massey Ferguson Inc Self-leveling valve attachment for loaders
US3179120A (en) * 1963-05-24 1965-04-20 Koehring Co Proportional flow divider
SE322469B (en) * 1968-06-06 1970-04-06 Ilsbo Ind Ab
US3521781A (en) * 1968-09-26 1970-07-28 Case Co J I Anti-rollback mechanism
US3568869A (en) * 1969-01-09 1971-03-09 Case Co J I Antirollback mechanism
US3695474A (en) * 1970-08-05 1972-10-03 Case Co J I Hydraulic control linkage for implement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112482462A (en) * 2020-11-16 2021-03-12 广西柳工机械股份有限公司 Control method and system for shovel loading preparation of loader

Also Published As

Publication number Publication date
FR2183004B1 (en) 1978-06-23
JPS5749689B2 (en) 1982-10-23
US3792792A (en) 1974-02-19
JPS4921902A (en) 1974-02-26
FR2183004A1 (en) 1973-12-14
GB1426357A (en) 1976-02-25

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