Road structure – process – or apparatus – Apparatus – Screed or drag
Patent
1998-05-29
2000-05-02
Lillis, Eileen
Road structure, process, or apparatus
Apparatus
Screed or drag
404 841, E01C 1922
Patent
active
060564741
ABSTRACT:
A height control mechanism for a strike-off plate of an asphalt paver screed assembly is disclosed. The screed assembly is pivotally connected to a pair of tow arms of an asphalt paver and has at least one main screed unit and at least one screed extension unit mounted in front of the main screed unit. The screed extension is laterally movable beyond one end of the main screed unit. The screed assembly also has an adjustment mechanism for adjusting the pitch angle of the screeds relative to the ground. The height control mechanism includes a support mechanism adapted to mount the strike-off plate in front of the main screed unit at a position ahead of the screed extension unit. The height control mechanism also includes a linkage arrangement adapted to automatically control the height of the strike-off plate upon the adjustment of the pitch angle of the screeds.
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Addie Raymond W
Caterpillar Inc.
Kibby Steven G.
Lillis Eileen
Pence O. Gordon
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