Screed Plate for Paving Machine
AssigneeCaterpillar Paving Products Inc.
InventorConwell K. Rife
Life of this patent
Estimating the term…
Abstract
A screed plate for a screed assembly to be towed by a mobile paver has a lower material contacting surface for compaction of paving material that includes textured pattern and an undulating pattern. The textured pattern includes a plurality of protruding elements and corresponding channeling grooves that receive and arrange the paving material into a plurality of windrows. The undulating pattern includes one or more arcuate ridges that traverse the plurality of channeling grooves to interact and blend together the plurality of windrows.
Claims20
A screed plate for a screed assembly towed by a mobile paver comprising:
- a forward leading edge;
- a rearward trailing edge parallel to the forward leading edge;
- an upper frame attachment surface extending between the forward leading edge and the rearward trailing edge;
- a lower material contacting surface adapted to compact and compress paving material sliding underneath the screed plate, the lower material contacting surface including:
- a textured pattern contiguous to the leading edge and having a plurality of protruding elements and a plurality of channeling grooves located between the plurality of protruding elements, the plurality of channeling grooves extending from the leading edge toward the trailing edge;
- and
- an undulating pattern contiguous to the trailing edge and having one or more arcuate ridges traversing at least a portion of the plurality of channeling grooves and parallel to the trailing edge.
A method of laying a paving mat comprising:
- receiving a paving material in a hopper of a mobile paver traveling longitudinally in a travel direction over a work surface;
- conveying the paving material from the hopper to an auger arranged laterally and perpendicular to the travel direction of the mobile paver;
- laterally distributing the paving material before a screed frame of a floating screed towed by the mobile paver;
- directing the paving material underneath a forward leading edge of a screed plate attached to an underside of the screed frame;
- compacting the paving material into a paving mat by sliding contact with a lower material contacting surface of the screed plate;
- and
- directing the paving material into a plurality of channeling grooves defined by a textured pattern on the screed plate to form a plurality of paving windrows corresponding to the plurality of channeling grooves;
- and
- visibly reducing the plurality of windrows by sliding contact with an undulating pattern on the screed plate.
A screed plate for a screed assembly towed by a mobile paver comprising:
- a forward leading edge;
- a rearward trailing edge parallel to the forward leading edge;
- an upper attachment surface extending between the forward leading edge and the rearward trailing edge;
- a lower material contacting surface opposite the upper attachment surface, the lower material contacting surface including:
- a textured pattern located toward the forward leading edge and including a plurality of protruding elements and a plurality of channeling grooves located between the plurality of protruding elements;
- and
- an undulating pattern located toward the rearward trailing edge and including a plurality of arcuate ridges each having a ridge height and extending parallel to the rearward leading edge, the plurality of arcuate ridges arranged in successive lateral ridge rows with decreasing ridge heights toward the rearward trailing edge.
Dependencies are inferred from the claim text.