The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2003
Filed:
Mar. 29, 2001
Adrian Baker, Charleston, IL (US);
Godfrey G. Little, Lerna, IL (US);
Blaw-Knox Construction Equipment Corporation, Mattoon, IL (US);
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.