Screeding apparatus and method

Road structure – process – or apparatus – Process – In situ treatment of earth or roadway

Reexamination Certificate

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Details

C404S092000, C404S101000, C404S102000

Reexamination Certificate

active

07104723

ABSTRACT:
A screed assembly apparatus for loose or plastic materials such as placed and/or poured, uncured concrete previously placed on the ground or another support surface, includes a screed frame, and mounted thereon, a striker for engaging and spreading the materials and a rotatable auger for moving the material longitudinally along the screed frame. The auger provides a pair of intertwined spiral flight coils. The striker is spaced to one side of the auger and in parallel thereto. An auger mounting means and a motive power means are engaged for rotating the auger to remove excess portions of the concrete from the pour.

REFERENCES:
patent: 3972666 (1976-08-01), Pandur
patent: 4078621 (1978-03-01), Dewar et al.
patent: 4350657 (1982-09-01), Jones et al.
patent: 4380533 (1983-04-01), Wojtowicz
patent: 4601629 (1986-07-01), Zimmerman
patent: 4930935 (1990-06-01), Quenzi et al.
patent: 4949795 (1990-08-01), McDonald et al.
patent: 5599098 (1997-02-01), Christie
patent: 5865592 (1999-02-01), Hansen

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