초록 ▼

A drive system is provided including first and second primary drive motors that are connected to drive opposing wheels at one end of a vehicle. Each primary drive motor is connected to and drives a variable displacement hydraulic pump. Each pump is connected via a separate hydraulic drive circuit to

A drive system is provided including first and second primary drive motors that are connected to drive opposing wheels at one end of a vehicle. Each primary drive motor is connected to and drives a variable displacement hydraulic pump. Each pump is connected via a separate hydraulic drive circuit to at least one hydraulic motor. The hydraulic drive motors drive opposing wheels at a second, opposite end of the vehicle.

대표청구항 ▼

[ What is claimed is:] [1.] A drive system for a wheeled vehicle, comprising:a first primary drive motor and gear assembly connected to drive a first wheel adjacent a first end on a first side of the vehicle;a second primary drive motor and gear assembly connected to drive a second wheel adjacent a

[ What is claimed is:] [1.] A drive system for a wheeled vehicle, comprising:a first primary drive motor and gear assembly connected to drive a first wheel adjacent a first end on a first side of the vehicle;a second primary drive motor and gear assembly connected to drive a second wheel adjacent a first end on a second side of the vehicle;a first hydraulic pump operatively connected to and driven by said first primary drive motor;a first hydraulic motor connected to drive a third wheel adjacent a second end on the second side of the vehicle;a first hydraulic drive circuit connecting said first hydraulic pump and said first hydraulic motor, said first hydraulic drive circuit including a first valve bank;a second hydraulic pump operatively connected to and driven by said second primary drive motor;a second hydraulic motor connected to drive a fourth wheel adjacent the second end on the first side of the vehicle;a second hydraulic drive circuit connecting said second hydraulic pump and said second hydraulic motor, said second hydraulic drive circuit including a second valve bank;a primary drive controller for controlling operation of said first and second primary drive motors; andan assist drive controller for controlling operation of said first and second hydraulic pumps and said first and second valve banks, thereby providing control of said first and second hydraulic motors.