Concrete floor finisher

Details Concrete floor finisher Concrete floor finisher

1978-06-27

1980-04-15

Byers, Jr., Nile C.

Road structure, process, or apparatus

Apparatus

Tool rotating in horizontal plane

E01C 1922

Patent

active

041981782

ABSTRACT:
A concrete floor finisher for finishing newly-placed concrete. The machine comprises a rotor hub, a plurality of rotor arms on the hub for rotation about an axis, a blade pivotable on each arm, and a motor for driving the rotor hub. The pitch of the blades is adjustable depending upon the condition of the wet concrete, by a piston and cylinder centrally located about the axis of rotation of the rotor, and a stud connected at one end to the blades and at its other end engaging a portion of the piston to adjust the pitch of the blades in response to the axial displacement of the piston.

REFERENCES:
patent: 2198929 (1940-04-01), Whiteman
patent: 2882805 (1959-04-01), Sieber
patent: 2882806 (1959-04-01), Thieme
patent: 2887934 (1959-05-01), Whiteman
patent: 2910923 (1959-11-01), Thieme
patent: 2942536 (1960-06-01), Irwin
patent: 2983203 (1961-05-01), Fletcher
patent: 3412657 (1968-11-01), Colizza
patent: 3791754 (1974-02-01), Zochil

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