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US 2009/0156099 A1Published application
Methods and apparatuses for surface finishing cured concrete
OwnerPaul Copoulosinventor
Life of this patent
Estimating the term…
Abstract
A method and apparatus for finishing cured concrete floors using a riding trowel to which large diameter pans are attached having a balanced distribution of abraders releasably secured to the undersides of the pans. The individual abraders are preferably individually spring biased so as to maintain full contact with the floor when traversing undulations of the floor.
Claims20
A concrete finishing apparatus comprising:
- an annular pan, wherein said annular pan is removably secured to a plurality of rotating blades.
A method of finishing concrete, said method comprising the steps of:
- obtaining a concrete trowel having at least one annular pan and at least one set of rotating blades, wherein said at least one annular pan comprises a rotational axis and removably-secured abrading pads, and wherein said at least one set of rotating blades comprises a central axis around which said blades rotate, and wherein said at least one annular pan is removably secured to said at least one set of rotating blades, and wherein said rotational axis and said central axis are coincident;
- and
- rotating said at least one set of rotating blades and said at least one annular pan while said abrading pads of said at least one annular pan are in contact with a floor section to be rendered smooth.
A concrete finishing apparatus comprising:
- at least one annular pan having a plurality of angle-shaped brackets disposed on a top surface of said at least one annular pan, wherein each of said plurality of angle-shaped brackets comprises a horizontal flange;
- and
- at least one set of rotating blades, wherein each blade of said at least one set of rotating blades comprises a leading edge, and wherein said leading edges apply force against said angle-shaped brackets when said at least one set of rotating blades is rotated, and wherein said horizontal flange retains said blade between said angle-shaped bracket and said top surface of said at least one annular pan, and wherein said horizontal flange prevents vertical separation of said at least one annular pan from said at least one set of rotating blades.
Dependencies are inferred from the claim text.