Finishing machine for a concrete surface

Details Finishing machine for a concrete surface Finishing machine for a concrete surface

1988-04-05

1989-07-18

Massie, Jerome W.

Road structure, process, or apparatus

Apparatus

Tool rotating in horizontal plane

51177, E01C 1922

Patent

active

048489603

ABSTRACT:
The present invention provides a finishing machine for a concrete surface comprising a body which supports a plurality of rotatable trowels with a plurality of trowel blades through radial support members so that the trowels can revolve around the central axis of the body, the body being equipped further with a driving device of the rotatable trowels, a power generator and traveling rollers of the finishing machine which is placed just below the central axis, wherein the driving device of the rotatable trowels is a gasoline engine, and wherein each rotatable trowel is driven by a transmission shaft branched off from a gearbox. The angle between the surface of revolution of each rotatable trowel and the concrete surface is minutely changeable by an angle adjustment mechanism.

REFERENCES:
patent: 2394274 (1946-02-01), Troxell
patent: 2869442 (1959-01-01), Mincher
patent: 2882805 (1959-04-01), Sieber
patent: 2942536 (1960-06-01), Irwin
patent: 3062107 (1962-11-01), Mitchell
patent: 3367250 (1968-02-01), Ytterberg
patent: 4320986 (1982-03-01), Morrison
patent: 4603999 (1986-08-01), Laditka
patent: 4676691 (1987-06-01), Morrison
patent: 4775306 (1988-10-01), Kikuchi et al.

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