Concrete finishing machine
US4822210A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1988 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | May 6, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C19/407
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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 framew…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.