Apparatus for tamping paving material
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United States of America Patent
Stats
-
Apr 22, 2003
Grant Date -
Oct 3, 2002
app pub date -
Mar 29, 2001
filing date -
Mar 29, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus that tamps paving material and distributes the paving material evenly across a screed plate before the paving material is leveled by the screed plate. The apparatus includes a tamper bar for compacting material, a drive connected to the tamper bar, and a biasing member. The drive intermittently forces the tamper bar downward into contact with the paving material at a desired speed and to a desired depth. The biasing member is connected to the tamper bar and biases the tamper bar upward against the drive such that the biasing member raises the tamper bar out of contact with the paving surface after the drive forces the tamper bar downward.
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