Patent ID: 8028783

Claim:
A tilt apparatus for a cab of a vehicle, comprising: a support frame attached to a chassis of the vehicle and connected with a tilt frame, the horizontal plane of said support frame being parallel to that of said chassis; a mounting attached to said cab and connected with said tilt frame, and configured so that the horizontal plane of said mounting can tilt about any direction of said chassis; actuators comprising at least one top actuator having one end connected with said support frame and the other end connected with said tilt frame and at least one bottom actuator having one end connected with said tilt frame and the other end connected with said mounting; at least two inclination sensors comprising at least one top sensor installed on said mounting and at least one bottom sensor installed on said support frame or said chassis; and a CPU installed in said cab and receiving continual slope information from said top and bottom sensors and controlling the operation of said actuators on the basis of said continual slope information and the relative tilted angle information between the horizontal plane of said mounting and that of said support frame or chassis, wherein each of said mounting and said support frame is a ring-shaped frame when viewed in plan view and comprises at least one cross strut.