Patent ID: 7284929

Claim:
A paver for casting at least two layers of material on a surface, one layer on top of the other layer, comprising: a chassis carried by an undercarriage, a first paving screed on the front end of said chassis that has at least one of a selectively adjustable height or a selectively adjustable blade angle for casting a lower layer of material from material previously deposited adjacent to the surface; a second paving screed on the rear end of said chassis, said second paving screed separated from said first paving screed by a distance in the casting running direction of said undercarriage for casting a second layer of material on the lower cast layer cast by said first paving screed, said second paving screed having a screed body of a base screed part or of an extendable paving screed having sidewardly extendable screed parts. a compaction assembly for each said first and second paving screed for generating a predetermined degree of compaction for the material deposited by the respective screed, said compacting assembly of said first paving screed comprising a high compaction assembly with at least one high compaction bar with compaction bar drives and at least one tamper bar with tamper bar drives; a hopper on said chassis into which the material to be deposited by said second screed is placed, and a conveyor between said hopper and said second paving screed for carrying the material from said hopper to said second paving screed.