| 摘要 |
<p>CONCRETE SLAB SURFACE FINISHING APPARATUS A support frame to span and to be moved over the surface of a concrete slab on wheels running on rails extending along side edges of the slab, and having a hopper for depositing a layer of finishing material on the slab surface ahead of at least one roller carried by the frame, said finishing material being confined on the surface by side walls depending from the frame and overlapping the side edges of the slab. Power means rotates the roller, and this roller can be adjusted vertically relative to the frame to adjust the thickness of finishing material being rolled onto the slab surface.</p> |
