Road structure – process – or apparatus – Apparatus – Tool rotating in horizontal plane
Reexamination Certificate
2011-02-22
2011-02-22
Addie, Raymond W (Department: 3671)
Road structure, process, or apparatus
Apparatus
Tool rotating in horizontal plane
Reexamination Certificate
active
07891906
ABSTRACT:
A concrete finishing apparatus and method for smoothing and flattening partially set-up concrete to a close-tolerance surface includes a movable unit that is movable and supported at a partially set-up concrete surface and at least one rotatable ring finishing member mounted to the movable unit. The rotatable ring finishing member is positioned at the concrete surface and rotatable to engage and finish the surface of the partially set-up concrete to a higher quality, closer-tolerance flat and level concrete floor surface. The apparatus may include a pair of rotatable ring finishing members that may be rotatable in opposite directions to enhance the floating and finishing processes and to transport any cement paste, sand, small aggregate, or concrete mix residue forward with the rotatable ring finishing members working surfaces to cut high areas and fill in any low areas as the concrete finishing apparatus moves over the partially set-up concrete.
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International Search Report and Written Opinion dated Jan. 8, 2010 for corresponding PCT Application No. PCT/US2009/035397, filed Feb. 27, 2009.
Matson Tracy L.
Quenzi Philip J.
Somero David W.
Addie Raymond W
Somero Enterprises, Inc.
Van Dyke, Gardner, Linn & Burkhardt, LLP
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