Riding trowel for concrete finishing

Details Riding trowel for concrete finishing Riding trowel for concrete finishing

1992-01-22

1993-08-24

Britts, Ramon S.

Road structure, process, or apparatus

Apparatus

With means for alternative ground support by tool or...

404112, E01C 1900, E01C 1922

Patent

active

052383237

ABSTRACT:
A riding trowel used for concrete finishing includes a dolly wheel lifting system. The lifting system elevates the trowel out of contact with the concrete surface when transporting, adjusting, or maintenancing the trowel. The trowel comprises a rigid metallic frame normally offset from the concrete surface to be finished by a pair of downwardly projecting, bladed rotors. A pair of primary steering control levers is linked to the rotors beneath the frame for trowel operation. Each rotor assembly comprises a rotatable blade assembly depending downwardly into contact with the concrete surface. The wheel system comprises a cooperating pair of spaced apart, dolly wheel assemblies which are removably fitted to the front and back of the frame, so that the trowel may be pushed around for loading and unloading purposes in directions generally coincident with its longitudinal axis. Each dolly wheel assembly comprises an upright, extensible stanchion supported upon a rigid cross piece extending between a pair of spaced apart wheels. The stanchion mounts a pair of rigid, spaced apart rods that are adapted to be mated to suitable mandrels formed in the frame front and rear, about the trowel center of gravity. The stanchion comprises upper and lower tubular members that are telescoped together and which may be axially displaced or retracted by an internal screw jack to raise or lower the trowel. When the trowel is raised above the concrete surface, the blades are safely exposed for servicing.

REFERENCES:
patent: 3564986 (1968-10-01), Burgin
patent: 3936212 (1976-02-01), Holz, Sr. et al.
patent: 4046483 (1977-09-01), Sutherland
patent: 4046484 (1977-09-01), Holz, Sr. et al.
patent: 4312603 (1982-01-01), Whiteman, Jr.
patent: 4710055 (1987-12-01), Maass et al.

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