Patent ID: 8978810
Filing Date: 2015-03-17
Classification: B60B,B60K,B60W,B62D

Abstract:
1. A four-wheel drive tractor configured such that front wheel axles are disposed above upper portions of front wheels, whereby the front wheels are prevented from being impeded by the front wheel axles when the front wheels are steered to maximum angles in a clockwise or counterclockwise direction to an angle greater than or approximate to a right angle with respect to a longitudinal direction of the tractor, wherein a central differential device is provided to control a difference in revolutions per minute (rpm) of the front wheels and rear wheels with respect to power transmitted from an engine to the front wheels and the rear wheels, and the power is distributed from the central differential device to a front wheel differential device and a rear wheel differential device, wherein the central differential device, the front wheel differential device and the rear wheel differential device are each disposed at a same side of a tractor body frame of the tractor at positions laterally displaced from a central portion of the tractor body frame, wherein the front wheels of the front wheel axles can be steered, and the rear wheels of rear wheel axles cannot be steered.