Electronic throttle on control handle

• US 8,100,218 B2
• Filed: 10/19/2009
• Issued: 01/24/2012
• Est. Priority Date: 10/19/2009
• Status: Active Grant

• Current Assignee: Blue Leaf IP Incorporated (CNH Industrial N.V.)
• Original Assignee: CNH Industrial America LLC (CNH Industrial N.V.)
• Inventors: Biggerstaff, Joseph M., Case, Michael D., Haar, William Ryan, Newlin, Tim, Potter, Eric
• Primary Examiner(s): Ilan, Ruth
• Application Number:
  US12/581,616
• Publication Number:
  US 20110088961A1
• Time in Patent Office: 827 Days
• Field of Search: 180/315, 180/331, 180/333, 180/335, 180/336, 187/224, 744/71.XY
• US Class Current: 180/333
• CPC Class Codes: B62D 1/12 Hand levers
• CPC Class Codes: E02F 9/2004 Control mechanisms, e.g. control levers control levers per se G05G
• CPC Class Codes: G05G 2009/04774 with additional switches or sensors on the handle
• CPC Class Codes: Y10T 74/20201 Control moves in two planes

Abstract

A steering and engine speed control mechanism for operating a vehicle. The control mechanism has a control handle mounted on the vehicle. The control handle is configured to deflect about an axis by movement of an operator'"'"'s hand. A steering direction of the vehicle is related to a deflection angle of the control handle about the axis. An actuating element for changing the speed of the engine of the vehicle is attached to the control handle and is conveniently movable by an operator'"'"'s digit to a plurality of positions to effect the desired speed of the engine.

Claims

1. A steering, engine speed and implement control mechanism for operating a vehicle, the control mechanism comprising:

a control handle mounted on the vehicle, the control handle having a trigger and configured to deflect in a plurality of directions along more than one axis by movement of an operator'"'"'s hand;

a steering direction of the vehicle related to manipulation of the trigger and a movement of the control handle about at least one axis, such that manipulation of the trigger moves the vehicle at least in the fore or aft direction, and left or right rotational movement of the control handle about a vertical axis moves the vehicle in a left or right rotational movement, respectively,

an implement movement related to a movement of the control handle along more than one axis, such that movement of the control handle upward and downward along the vertical axis moves a lift assembly connected to the vehicle in an upward and downward direction, respectively, and deflection of at least a portion of the control handle along a longitudinal axis fore and aft moves a bucket connected to the lift assembly upward and downward, respectively;

an actuating element for changing the speed of the engine of the vehicle, attached to the control handle and conveniently movable by an operator'"'"'s digit to a plurality of positions to effect the desired engine speed; and

a control circuit operably connected between the actuating element and a throttle control mechanism, the control circuit having predetermined maximum and minimum engine speeds programmed therein, such that continued activation of the actuating element by the operator'"'"'s digit does not cause the engine speed to increase or decrease beyond the maximum and minimum engine speed programmed therein.

2. The control mechanism of claim 1 wherein the control circuit receives input from the actuating element and sends appropriate output to the throttle control mechanism to control the speed of the engine.

3. The control mechanism of claim 2 wherein the actuating element is an electronic roller switch which is rotatable about an axis by movement of the operator'"'"'s digit.

4. The control mechanism of claim 2 wherein the actuating element is a pair of push buttons.

5. The control mechanism of claim 2 wherein the actuating element is an electronic slider switch which is slidable by movement of the operator'"'"'s digit.

6. The control mechanism of claim 2 wherein the actuating element is an potentiometer which is rotatable about an axis by movement of the operator'"'"'s digit.

7. The control mechanism of claim 1 wherein the throttle control mechanism is programmable to allow the speed of the engine to be returned to a programmed speed and resets the actuating element consistent with the programmed speed, thereby allowing the operator to prevent stalling of the vehicle.

8. A steering, engine speed and implement control mechanism for operating a vehicle, the control mechanism comprising:

a control handle mounted on the vehicle, the control handle having a trigger and configured to deflect in a plurality of directions along more than one axis by movement of an operator'"'"'s hand;

a steering direction of the vehicle related to manipulation of the trigger and a movement of the control handle about at least one axis, such that manipulation of the trigger moves the vehicle at least in the fore or aft direction, and left or right rotational movement of the control handle about a vertical axis moves the vehicle in a left or right rotational movement, respectively,

an implement movement related to a movement of a thumb joystick on the control handle such that an operator'"'"'s thumb on the thumb joystick moves the implement;

an actuating element for changing the speed of the engine of the vehicle, attached to the control handle and conveniently movable by an operator'"'"'s digit to a plurality of positions to effect the desired engine speed; and

a control circuit operably connected between the actuating element and a throttle control mechanism, the control circuit having predetermined maximum and minimum engine speeds programmed therein, such that continued activation of the actuating element by the operator'"'"'s digit does not cause the engine speed to increase or decrease beyond the maximum and minimum engine speed programmed therein.

9. The control mechanism of claim 8 wherein the control circuit receives input from the actuating element and sends appropriate output to the throttle control device to control the speed of the engine.

10. The control mechanism of claim 8 wherein the actuating element is an electronic roller switch which is rotatable about an axis by movement of the operator'"'"'s digit.

11. The control mechanism of claim 8 wherein the actuating element is an electronic slider switch which is slidable by movement of the operator'"'"'s digit.

12. The control mechanism of claim 8 wherein a the throttle control mechanism is programmable to allow the speed of the engine to be returned to a programmed speed and resets the actuating element consistent with the programmed speed, thereby allowing the operator to prevent stalling of the vehicle.