Screed tow point assembly for paver
AssigneeCaterpillar Paving Products Inc.
InventorAaron M. Case
Life of this patent
Estimating the term…
Abstract
A tow point assembly for attaching a screed to a traction unit of a paver, the tow point assembly including a tow arm having a forward end and a rearward end adapted to be secured to the screed, a tow point support adapted to be secured to the traction unit, and a tow point lift mechanism. The tow point lift mechanism has a first end adapted to be secured to one of the traction unit and the tow point support, and a second end connected to the forward end of the tow arm. The forward end of the tow arm defines a pull point axis where the traction unit pulls the screed and a pivot axis where the tow arm pivots relative to the traction unit. The pull point axis and the pivot axis are coaxial.
Claims18
A tow point assembly for attaching a screed to a traction unit of a paver, the tow point assembly comprising:
- a tow arm having a forward end and a rearward end, the rearward end adapted to be secured to the screed;
- a tow point support adapted to be secured to the traction unit;
- and
- a tow point lift mechanism having a first end adapted to be secured to one of the traction unit and the tow point support, and a second end connected to the forward end of the tow arm;
- wherein the forward end of the tow arm defines a pull point axis where the traction unit pulls the screed and a pivot axis where the tow arm pivots relative to the traction unit, and
- wherein the pull point axis, the second end of the tow point lift mechanism and the pivot axis are coaxial.
A paver for distributing paving material onto a roadway surface, the paver comprising:
- a traction unit;
- a screed assembly coupled to the rear portion of the traction unit;
- a tow point assembly that couples the screed assembly to the traction unit, the tow point assembly comprising:
- a tow arm having a forward end and a rearward end, the forward end of the tow arm includes a first arm and a second arm and the rearward end adapted to be secured to the screed;
- a tow point support adapted to be secured to the traction unit, wherein the tow point support is positioned between the first arm and the second arm;
- and
- a tow point lift mechanism having a first end adapted to be secured to one of the traction unit and the tow point support, and a second end connected to the forward end of the tow arm;
- wherein the forward end of the tow arm defines a pull point axis where the traction unit pulls the screed and a pivot axis where the tow arm pivots relative to the traction unit, and
- wherein the pull point axis and the pivot axis are coaxial.
Dependencies are inferred from the claim text.