Patent ID: 6056474
Filing Date: 2000-05-02
Classification: E01C

Abstract:
A height control mechanism for a strike-off plate of an asphalt paver screed assembly, said screed assembly being pivotally connected to a pair of tow arms of an asphalt paver and having at least one main screed unit and at least one screed extension unit mounted in front of said main screed unit and being laterally movable beyond one end of said main screed unit, and an adjustment mechanism for adjusting the pitch angle of the screeds relative to the ground, said height control mechanism comprising:a support mechanism which mounts said strike-off plate in front of said main screed unit at a position ahead of said screed extension unit; anda linkage arrangement which automatically causes said support mechanism to lower the height of said strike-off plate responsive to operation of the adjustment mechanism increasing the pitch angle of said screeds.