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Class Information
Number: 172/4
Name: Earth working > Automatic power control > Constant depth type
Description: Apparatus in which the sensing means contacts or senses the surface of the ground and acts to maintain the earthworking element at a preselected depth therein.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7543655 |
Selective position control system and method |
Jun. 9, 2009 |
| 7246456 |
Linked mode for a multi-axis machine control |
Jul. 24, 2007 |
| 7055616 |
Automatic row crop implement positioner |
Jun. 6, 2006 |
| 6883299 |
Height sensor arrangement for agricultural applications |
Apr. 26, 2005 |
| 6701857 |
Depth control device for planting implement |
Mar. 9, 2004 |
| 6698523 |
Electrohydraulic control system for implement lift cylinders |
Mar. 2, 2004 |
| 6530197 |
Ground contact height sensor |
Mar. 11, 2003 |
| 6516595 |
Harvesting machine having an obstacle sensing device |
Feb. 11, 2003 |
| 6460623 |
Hydraulic system providing down force on a work implement |
Oct. 8, 2002 |
| 6431515 |
Ceiling-supported suspension means |
Aug. 13, 2002 |
| 6389999 |
Dynamic controller of excess downpressure for surface engaging implement |
May. 21, 2002 |
| 6378620 |
Method and apparatus for controlling the attitude of an implement |
Apr. 30, 2002 |
| 6305478 |
Hydraulic controls for agricultural implements |
Oct. 23, 2001 |
| 6253136 |
Method and apparatus for a limp home mode |
Jun. 26, 2001 |
| 6216794 |
Joystick control for an automatic depth control system and method |
Apr. 17, 2001 |
| 6216795 |
Ultrasonic transducer based device positioning system and method |
Apr. 17, 2001 |
| 6202395 |
Combine header height control |
Mar. 20, 2001 |
| 6164385 |
Automatic depth control system and method |
Dec. 26, 2000 |
| 6151874 |
Adjustment device for hydraulic cylinders |
Nov. 28, 2000 |
| 6141612 |
Apparatus and method for controlling the position of an implement and marker of a work vehicle |
Oct. 31, 2000 |
| 6123155 |
Control system for power take-off shafts |
Sep. 26, 2000 |
| 6105679 |
Control system for a hitched or trailed implement |
Aug. 22, 2000 |
| 6088621 |
Portable apparatus for rapid re-programming of irrigation controllers |
Jul. 11, 2000 |
| 6085846 |
Potentiometer-based gauge wheel device positioning system and method |
Jul. 11, 2000 |
| 6076611 |
Implement mounted depth control system |
Jun. 20, 2000 |
| 6076029 |
Slope excavation controller of hydraulic shovel, target slope setting device and slope excavation forming method |
Jun. 13, 2000 |
| 6064918 |
Anti-interference device for construction machine |
May. 16, 2000 |
| 5999872 |
Control apparatus for hydraulic excavator |
Dec. 7, 1999 |
| 5992533 |
Method and apparatus for controlling width-adjustable tillage implement |
Nov. 30, 1999 |
| 5975473 |
Mounting device for non-contacting sensors |
Nov. 2, 1999 |
| 5953838 |
Control for hydraulically operated construction machine having multiple tandem articulated members |
Sep. 21, 1999 |
| 5931882 |
Combination grid recipe and depth control system |
Aug. 3, 1999 |
| 5802489 |
Front wheel drive engagement control system for agricultural vehicles |
Sep. 1, 1998 |
| 5711139 |
Self-leveling hillside mower with remote control |
Jan. 27, 1998 |
| 5709271 |
Agricultural planter |
Jan. 20, 1998 |
| 5701691 |
Region limiting excavation control system for construction machine |
Dec. 30, 1997 |
| 5684691 |
Method and apparatus for controlling draft of an agricultural implement |
Nov. 4, 1997 |
| 5653292 |
Method and apparatus for automatically controlling the soil penetration depth of zone tillage coulters and the like |
Aug. 5, 1997 |
| 5620053 |
Blade apparatus and its control method in bulldozer |
Apr. 15, 1997 |
| 5579850 |
Cultivating system and cultivating machine with plow-depth control function |
Dec. 3, 1996 |
| 5572809 |
Control for hydraulically operated construction machine having multiple tandem articulated members |
Nov. 12, 1996 |
| 5562165 |
Hydraulic floating system for downpressure control of seeding tools |
Oct. 8, 1996 |
| 5558163 |
Control system for utility vehicle |
Sep. 24, 1996 |
| 5549166 |
Hitch assembly control system |
Aug. 27, 1996 |
| 5524560 |
System for controlling vertical displacement of agricultural implements into the soil |
Jun. 11, 1996 |
| 5499683 |
Soil treating system with hydraulically actuated implement controller |
Mar. 19, 1996 |
| 5479992 |
Agricultural implement controller to compensate for soil hardness variation |
Jan. 2, 1996 |
| 5472056 |
Control system for agricultural vehicle and calibration method for such control systems |
Dec. 5, 1995 |
| 5469921 |
Hitch assembly control system |
Nov. 28, 1995 |
| 5427182 |
Pressure relieving circuit for a series cylinder depth control |
Jun. 27, 1995 |
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