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AU546993B2 - A height control system - Google Patents
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AU546993B2 - A height control system - Google Patents

A height control system

Info

Publication number
AU546993B2
AU546993B2 AU40447/85A AU4044785A AU546993B2 AU 546993 B2 AU546993 B2 AU 546993B2 AU 40447/85 A AU40447/85 A AU 40447/85A AU 4044785 A AU4044785 A AU 4044785A AU 546993 B2 AU546993 B2 AU 546993B2
Authority
AU
Australia
Prior art keywords
control system
height control
height
control
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.)
Ceased
Application number
AU40447/85A
Other versions
AU546993B3 (en
AU546993A3 (en
Inventor
Michael Worthington
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.)
AYE Pty Ltd DE
Original Assignee
AYE Pty Ltd DE
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25621394&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU546993(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from AU30289/84A external-priority patent/AU563491B2/en
Application filed by AYE Pty Ltd DE filed Critical AYE Pty Ltd DE
Priority to AU40447/85A priority Critical patent/AU546993B3/en
Priority claimed from AU40447/85A external-priority patent/AU546993B3/en
Application granted granted Critical
Publication of AU546993B2 publication Critical patent/AU546993B2/en
Publication of AU546993B3 publication Critical patent/AU546993B3/en
Publication of AU546993A3 publication Critical patent/AU546993A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D5/00—Control of dimensions of material
    • 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
    • A01B63/1112—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 using a non-tactile ground distance measurement, e.g. using reflection of waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
AU40447/85A 1983-07-06 1985-03-27 A height control system Ceased AU546993B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU40447/85A AU546993B3 (en) 1983-07-06 1985-03-27 A height control system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPG0141 1983-07-06
AUPG1737 1983-10-07
AU30289/84A AU563491B2 (en) 1983-07-06 1983-10-07 Depth control system
AU40447/85A AU546993B3 (en) 1983-07-06 1985-03-27 A height control system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU30289/84A Division AU563491B2 (en) 1983-07-06 1983-10-07 Depth control system

Publications (3)

Publication Number Publication Date
AU546993B2 true AU546993B2 (en) 1985-11-18
AU546993B3 AU546993B3 (en) 1985-11-18
AU546993A3 AU546993A3 (en) 1985-11-18

Family

ID=

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU614486B2 (en) * 1983-11-21 1991-09-05 Ezra C. Lundahl, Inc. Automatic sonar activated height control for a header
EP0459336A1 (en) * 1990-05-29 1991-12-04 Deere & Company Ultrasonic distance measuring system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU614486B2 (en) * 1983-11-21 1991-09-05 Ezra C. Lundahl, Inc. Automatic sonar activated height control for a header
EP0459336A1 (en) * 1990-05-29 1991-12-04 Deere & Company Ultrasonic distance measuring system
EP0653645A3 (en) * 1990-05-29 1995-06-14 Deere & Company Method for measuring a distance
EP0653644A3 (en) * 1990-05-29 1995-06-14 Deere & Company Distance measuring system

Also Published As

Publication number Publication date
AU546993A3 (en) 1985-11-18

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