ZA912068B - Draft control apparatus and method - Google Patents

Draft control apparatus and method

Info

Publication number: ZA912068B
Authority: ZA; South Africa
Prior art keywords: control apparatus; draft control; draft; control
Prior art date: 1990-04-05

Application number

ZA912068A

Other languages

English (en)

Inventor

Gerald D Hardy

D Hardy Gerald

John P Hoffman

P Hoffman John

Larry E Kendrick

E Kendrick Larry

Stephen W Rector

W Rector Stephen

Original Assignee

Caterpillar Inc

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.)

1990-04-05

Filing date

1991-03-20

Publication date

1991-12-24

1991-03-20 Application filed by Caterpillar Inc filed Critical Caterpillar Inc

1991-12-24 Publication of ZA912068B publication Critical patent/ZA912068B/xx

Links

Classifications

- 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
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2029—Controlling the position of implements in function of its load, e.g. modifying the attitude of implements in accordance to vehicle speed

Landscapes

Engineering & Computer Science (AREA)
Mining & Mineral Resources (AREA)
Civil Engineering (AREA)
General Engineering & Computer Science (AREA)
Structural Engineering (AREA)
Lifting Devices For Agricultural Implements (AREA)

ZA912068A 1990-04-05 1991-03-20 Draft control apparatus and method ZA912068B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US07/505,284 US5040119A (en)	1990-04-05	1990-04-05	Draft control apparatus and method

Publications (1)

Publication Number	Publication Date
ZA912068B true ZA912068B (en)	1991-12-24

Family

ID=24009697

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA912068A ZA912068B (en)	1990-04-05	1991-03-20	Draft control apparatus and method

Country Status (10)

Country	Link
US (1)	US5040119A (xx)
EP (1)	EP0479952B1 (xx)
JP (1)	JP2738591B2 (xx)
AU (1)	AU633786B2 (xx)
BR (1)	BR9007491A (xx)
CA (1)	CA2051425C (xx)
DE (1)	DE69028779T2 (xx)
MX (1)	MX172640B (xx)
WO (1)	WO1991015106A1 (xx)
ZA (1)	ZA912068B (xx)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5142800A (en) *	1991-12-27	1992-09-01	Logan Manufacturing Company	Snow groomer tow frame alignment device
US5576962A (en) *	1995-03-16	1996-11-19	Caterpillar Inc.	Control system and method for a hydrostatic drive system
US5884204A (en) *	1996-04-16	1999-03-16	Case Corporation	Active roadability control for work vehicles
US6058342A (en) *	1996-07-25	2000-05-02	Case Corporation	Precision control of implement position/motion
US6112719A (en) *	1998-12-15	2000-09-05	Caterpillar Inc.	Acceleration based control system for speed governing
US6810366B2 (en) *	2002-03-25	2004-10-26	Caterpillar Inc	Method and apparatus for filtering a signal using a deadband
US7127340B2 (en) *	2004-08-17	2006-10-24	Deere & Company	Variable gain logic for a GPS based automatic steering system
US7954556B2 (en) *	2006-08-17	2011-06-07	Cnh America Llc	Using a can bus engine torque/speed message as load feedback for implement draft control
US7933701B2 (en) *	2006-12-28	2011-04-26	Caterpillar Inc.	Closed-loop motion-control system using error to modify gain
US20080257570A1 (en) *	2007-04-17	2008-10-23	Johnny Keplinger	Electronic draft control for semi-trailed implements
FR2915525B1 (fr) *	2007-04-25	2012-10-12	Peugeot Citroen Automobiles Sa	Procede et dispositif de regulation du regime d'un moteur equipe d'une commande en couple
US8600621B2 (en) *	2011-12-20	2013-12-03	Caterpillar Inc.	System and method for controlling slip
US10517238B2 (en)	2017-09-18	2019-12-31	Deere & Company	Implement optimization by automated adjustments

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4423785A (en) *	1980-03-18	1984-01-03	Kabushiki Kaisha Komatsu Seisakusho	Load control device for a working tool of a construction vehicle
US4490791A (en) *	1982-04-19	1984-12-25	Chandler Evans Inc.	Adaptive gas turbine acceleration control
US4495577A (en) *	1982-08-06	1985-01-22	Deere & Company	Model reference adaptive implement control
US4866641A (en) *	1987-04-24	1989-09-12	Laser Alignment, Inc.	Apparatus and method for controlling a hydraulic excavator
US4796712A (en) *	1987-09-03	1989-01-10	Ford Motor Company	Draft load control systems
US4846283A (en) *	1987-09-08	1989-07-11	J. I. Case Company	Engine-sensing draft control system with multiple feedback compensation mechanisms
US4807136A (en) *	1987-10-26	1989-02-21	Ford Motor Company	Draft load measurement and control
US4834461A (en) *	1987-11-18	1989-05-30	Caterpillar Inc.	Control system for a multiple shank impact ripper

1990
- 1990-04-05 US US07/505,284 patent/US5040119A/en not_active Expired - Lifetime
- 1990-07-16 JP JP3502638A patent/JP2738591B2/ja not_active Expired - Lifetime
- 1990-07-16 CA CA002051425A patent/CA2051425C/en not_active Expired - Fee Related
- 1990-07-16 EP EP91902583A patent/EP0479952B1/en not_active Expired - Lifetime
- 1990-07-16 AU AU71717/91A patent/AU633786B2/en not_active Ceased
- 1990-07-16 WO PCT/US1990/003957 patent/WO1991015106A1/en active IP Right Grant
- 1990-07-16 BR BR909007491A patent/BR9007491A/pt not_active IP Right Cessation
- 1990-07-16 DE DE69028779T patent/DE69028779T2/de not_active Expired - Fee Related
1991
- 1991-03-20 ZA ZA912068A patent/ZA912068B/xx unknown
- 1991-04-04 MX MX025222A patent/MX172640B/es unknown

Also Published As

Publication number	Publication date
CA2051425C (en)	2001-02-20
CA2051425A1 (en)	1991-10-06
DE69028779T2 (de)	1997-05-07
US5040119A (en)	1991-08-13
DE69028779D1 (de)	1996-11-07
EP0479952A1 (en)	1992-04-15
WO1991015106A1 (en)	1991-10-17
AU633786B2 (en)	1993-02-04
EP0479952B1 (en)	1996-10-02
BR9007491A (pt)	1992-06-16
EP0479952A4 (en)	1992-09-09
AU7171791A (en)	1991-10-30
JPH04506904A (ja)	1992-12-03
MX172640B (es)	1994-01-04
JP2738591B2 (ja)	1998-04-08

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