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US 8,322,482 B2Granted
Tractor ground positioning system
AssigneeDeere & Company
InventorsDavid L. Sprinkle, William O. Ifode, Mark D. Evans
Life of this patent
Estimating the term…
Abstract
A tractor ground positioning system includes ground positioning controls outside of an operator station of the tractor that can be actuated by an operator while maintaining contact with the tractor to move the tractor forward or reverse to connect an implement. A controller commands the tractor to move at a desired ground speed only while the operator continues actuating the controls.
Claims18
A tractor ground positioning system comprising
- ground positioning controls on the tractor outside an operator station of the tractor and adjacent a three point hitch on the tractor;
- the ground positioning controls actuated only by direct and continuous contact;
- a seat switch in the operator station indicating if there is a seated operator;
- and
- a controller electrically connected to the ground positioning controls to command a transmission of the tractor to move the tractor at a desired ground speed in forward or reverse over short distances if the seat switch indicates the absence of a seated operator and while the controls remain continuously actuated.
2 more elements
A tractor ground positioning system comprising:
- ground positioning controls on the tractor outside an operator station of the tractor and adjacent a three point hitch on the tractor;
- the ground positioning controls actuated only by direct and continuous contact;
- a controller electrically connected to the ground positioning controls to command a transmission of the tractor to move the tractor at a desired ground speed in forward or reverse over short distances while the controls remain continuously actuated;
- a first speed sensor connected to the controller and sensing the actual ground speed of the tractor;
- and,
- a second speed sensor connected to the controller and sensing the actual ground speed of the tractor.
3 more elements
A tractor ground positioning system comprising:
- a forward ground positioning control and a reverse ground positioning control outside an operator station of the tractor that can be actuated only from the ground while in contact with the tractor adjacent a hitch on the tractor;
- a transmission having a plurality of different operator selectable ranges including a low range;
- a controller that commands the tractor to move at a desired ground speed only if a low range of the transmission is selected and while continuously actuating either of the ground positioning controls;
- and
- a speed sensor connected to the controller causing the controller to discontinue commanding the tractor to move at the desired ground speed if the actual ground speed sensed by the speed sensor does not match the desired ground speed.
2 more elements
A tractor ground positioning system comprising:
- an enable switch, a foot pedal and a park brake in a tractor operator station;
- a ground positioning control switch adjacent a three point hitch on the tractor that may be actuated only from outside the tractor operator station;
- a controller connected to the enable switch, foot pedal, park brake and ground positioning control switch, that commands the tractor to move at a desired ground speed only if the enable switch, park brake and ground positioning control switch are actuated, and the foot pedal is not actuated.
A tractor ground positioning system comprising:
- an enable switch in a tractor operator station;
- a ground positioning control switch adjacent a three point hitch on the tractor that may be actuated only from outside the tractor operator station;
- a controller connected to the enable switch and ground positioning control switch that commands the tractor to move at a desired ground speed only if the enable switch and ground positioning control switch are actuated;
- a plurality of system checks that the controller must determine are satisfied before commanding the tractor to move at the desired ground speed;
- wherein one of the system checks is a seat switch in the operator station to detect the absence of a seated operator.
2 more elements
A tractor ground positioning system comprising:
- an enable switch in a tractor operator station;
- a ground positioning control switch adjacent a three point hitch on the tractor that may be actuated only from outside the tractor operator station;
- a controller connected to the enable switch and ground positioning control switch that commands the tractor to move at a desired ground speed only if the enable switch and ground positioning control switch are actuated;
- wherein a park brake must be engaged to move the tractor at the desired ground speed.
1 more element
Dependencies are inferred from the claim text.