ApplicationNo. 07/004875 filed on 01/20/1987
US Classes:404/84.05, Automatic control404/101Material distribution means
ExaminersPrimary: Massie, Jerome W.
Assistant: Smith, Matthew
Attorney, Agent or Firm
International ClassesB60G 17/033 (20060101)
B60G 17/02 (20060101)
B60G 3/01 (20060101)
E01C 19/48 (20060101)
B60G 3/00 (20060101)
E01C 19/00 (20060101)
AbstractAn improved "3-point" suspension for a bituminous paver disposes two of the suspension "points" at the front of the tractor unit and the third "point" at the rear. Preferably the third suspension "point" is achieved by suspending the rear of the tractor unit via laterally spaced hydraulic cylinders interconnected such that upward or downward movement of one rear wheel or track results in corresponding downward or upward movement of the other rear wheel or track. The hydraulic suspension also allows the height of the rear of the tractor unit, and thus the height of the spreader screws relative to the ground, to be adjusted on the run by conjoint upward or downward movement of both rear wheels or tracks.