초록

A vehicle having a hydrostatic transmission is provided with a main speed control lever for governing the vehicle's maximum forward speed and an independently adjustable tracking control mechanism for coordinating output of left and right hydraulic wheel motors.

대표청구항 ▼

[ I claim:] [1.] A self-propelled vehicle having a frame and first and second ground engaging traction devices, said self-propelled vehicle comprising:an engine mounted to the frame;a first hydrostatic transmission operably connected to the engine for converting output of the engine into rotational

[ I claim:] [1.] A self-propelled vehicle having a frame and first and second ground engaging traction devices, said self-propelled vehicle comprising:an engine mounted to the frame;a first hydrostatic transmission operably connected to the engine for converting output of the engine into rotational movement of the first ground engaging traction device;a second hydrostatic transmission operably connected to the engine for converting output of the engine into rotational movement of the second ground engaging traction device;first and second steering controls operably connected to the first and second hydrostatic transmissions for individually varying speed attained by the first and second ground engaging traction devices in a range from a maximum forward speed to neutral;a main speed control lever operably coupled to the first and second hydrostatic transmissions for setting the maximum forward speed of the vehicle, said main speed control lever having a plurality of positions between and including a stop position for stopping the vehicle and a full-ahead position; anda tracking control operably connected to at least one of the first and second hydrostatic transmissions for adjusting the speed of the first ground engaging traction device relative to the speed of the second ground engaging traction device, said tracking control being adjustable without altering the position of the main speed control lever.