| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 477034000 |
TRANSMISSION CONTROL
| 836 |
| 477002000 |
PLURAL ENGINES
| 710 |
| 477166000 |
CLUTCH CONTROL
| 194 |
| 477007000 |
ELECTRIC ENGINE
| 93 |
| 477182000 |
BRAKE CONTROL
| 90 |
| 477032000 |
WITH SUPERCHARGER
| 8 |
| 477001000 |
STEERING BY DRIVING | 4 |
| 20100120578 | DRIVE AND STEERING CONTROL SYSTEM FOR AN ENDLESS TRACK VEHICLE - A drive and steering control system for an endless track vehicle such as a sugar cane harvester. A dual path hydrostatic drive has a pair of variable volume pumps connected for bidirectional flow to respective hydraulic motors driving a pair of endless tracks. A speed control lever and steering wheel mechanism each provide control inputs to a microprocessor which in turn controls the variable volume hydrostatic pumps to control vehicle velocity and turning in a way that matches control for wheeled vehicles. RPM sensors for the hydraulic motors provide a feedback signal that is used to compensate for equipment variation and to keep the vehicle on the course intended by the operator. | 05-13-2010 |
| 20120238403 | WORK VEHICLE - A work vehicle includes a pair of electric motors independently running and driving right and left running wheels in a state of being able to create straight running state and turning running; a pair of right and left change speed operation tools independently manually operated and performing a change speed operation to the right and left running wheels; and a controller controlling operation. The controller controls the operation of the respective electric motors by setting target speeds with regard to the respective electric motors such that the speed difference in the target speeds is smaller than the speed difference corresponding to the difference in the operation positions of the respective change speed operation tools by a set amount in a case where the operation positions of the respective change speed operation tools are different between right and left. | 09-20-2012 |
| 20140357446 | WINDROWER STEERING SYSTEM - A steering system for a differential steered self-propelled agricultural windrower, windrower speed and direction controlled by adjusting the pivotal position of rotatable pintel arms to control the output of a pair of tandem-mounted hydraulic drive pumps and provide motive power for the windrower. A control input shaft that is both rotatable and axially moveable manages the relative positioning of the pintel arms. A hydraulic steering motor is operably connected to the input shaft. Rotation of the hydraulic steering motor is managed by a steering control valve attached to a cab-mounted windrower steering wheel. | 12-04-2014 |
| 20150065293 | VEHICLE DRIVING SYSTEM - A vehicle driving system includes: a left wheel driving system having a first motor and a first speed changer; a right wheel driving system having a second motor and a second speed changer; a motor controller which controls the first motor and the second motor, a rotation restricting unit which can be shifted between a released state and an applied state; and a rotation restricting unit controller which controls the rotation restricting unit. When the rotation restricting unit controller shifts the rotation restricting unit from the applied state to the released state, the motor controller controls the first motor and the second motor so that a torque sum of the first motor and the second motor approaches zero while maintaining a torque difference between the first motor and the second motor. | 03-05-2015 |
