ZA771938B - Control valve for tractor-implement hydraulic system - Google Patents

Control valve for tractor-implement hydraulic system

Info

Publication number
ZA771938B
ZA771938B ZA00771938A ZA771938A ZA771938B ZA 771938 B ZA771938 B ZA 771938B ZA 00771938 A ZA00771938 A ZA 00771938A ZA 771938 A ZA771938 A ZA 771938A ZA 771938 B ZA771938 B ZA 771938B
Authority
ZA
South Africa
Prior art keywords
tractor
control valve
hydraulic system
implement hydraulic
implement
Prior art date
Application number
ZA00771938A
Other languages
English (en)
Original Assignee
Case Co J I
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 Case Co J I filed Critical Case Co J I
Publication of ZA771938B publication Critical patent/ZA771938B/xx

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
    • A01B63/112—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to control draught load, i.e. tractive force

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
ZA00771938A 1976-06-03 1977-03-30 Control valve for tractor-implement hydraulic system ZA771938B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/692,293 US4030295A (en) 1976-06-03 1976-06-03 Control valve for tractor-implement hydraulic system

Publications (1)

Publication Number Publication Date
ZA771938B true ZA771938B (en) 1978-02-22

Family

ID=24780000

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00771938A ZA771938B (en) 1976-06-03 1977-03-30 Control valve for tractor-implement hydraulic system

Country Status (8)

Country Link
US (1) US4030295A (fr)
AU (1) AU503494B2 (fr)
BR (1) BR7703521A (fr)
CA (1) CA1031243A (fr)
FR (1) FR2353216A1 (fr)
GB (1) GB1561284A (fr)
SE (1) SE7700886L (fr)
ZA (1) ZA771938B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435187A1 (fr) * 1978-09-08 1980-04-04 Renault Dispositif de relevage electrohydraulique d'outils agraires
US4869065A (en) * 1988-05-09 1989-09-26 Caterpillar Inc. Single spool selector valve for simultaneous pump displacement and motor direction control in hydrostatic drive
US10626896B2 (en) 2018-08-10 2020-04-21 Cnh Industrial America Llc Control system for flushing contaminated hydraulic fluid
CN115606351B (zh) * 2022-10-08 2025-10-10 江苏徐工工程机械研究院有限公司 一种拖拉机机具控制方法、系统及拖拉机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH426341A (de) * 1960-12-27 1966-12-15 Hans Dipl Ing Molly Hydraulische Hebevorrichtung, insbesondere zum Regeln der Pflugtiefe
FR1363918A (fr) * 1963-03-04 1964-06-19 Renault Dispositif hydraulique de relevage d'outil et de contrôle d'effort pour tracteurs agricoles
US3235010A (en) * 1964-01-30 1966-02-15 Case Co J I Load depth control valve
US3486334A (en) * 1968-05-16 1969-12-30 Cessna Aircraft Co Hydraulic power transmission control
US3604312A (en) * 1969-10-23 1971-09-14 Allis Chalmers Mfg Co Draft control valve
US3865514A (en) * 1973-07-25 1975-02-11 Sperry Rand Corp Power transmission

Also Published As

Publication number Publication date
GB1561284A (en) 1980-02-20
BR7703521A (pt) 1978-03-14
AU503494B2 (en) 1979-09-06
SE7700886L (sv) 1977-12-04
US4030295A (en) 1977-06-21
CA1031243A (fr) 1978-05-16
AU2393277A (en) 1978-10-12
FR2353216A1 (fr) 1977-12-30

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