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. 18, 1989
Filed:
May. 06, 1988
Robert F Oury, Gilberts, IL (US);
Charles J Arndt, Bloomingdale, IL (US);
Rotec Industries, Elmhurst, IL (US);
Abstract
A concrete finishing machine having a movable framework mounted transversely over a paved area and defining an axis. A carriage is movably attached to the framework and has means for moving the carriage along the length of the framework. The carriage carries at least one rotating auger unit having leading and trailing portions mounted on one shaft and a finishing member. The auger unit has a leading portion having a helically arranged blade with an outer edge that is positioned in a fixed, spaced relationship with a desired grade. The trailing portion has a helically arranged blade with a band attached thereto to spread forward the excess concrete left by the leading portion and to finish the concrete at the desired grade. Plunging concrete vibrators are placed adjacent the auger unit leading portions. Means for conveying concrete, aligned with the framework axis, is mounted on the framework and has a side discharge station, movably mounted on the conveyor, for directing concrete from the conveying means to the paving area along the framework length. The side discharge stations has a plow, discharge chute and operator platform to centrally control all machine operations. The framework has track engaging end sections for support. Adjustment means are mounted on the end sections to maintain a desired grade for the concrete finishing operations during skewed movement of the framework axis relative to an axis perpendicular to the direction of framework travel.