Concrete-floor finisher

Details Concrete-floor finisher Concrete-floor finisher

1995-10-24

1996-12-17

Graysay, Tamara L.

Road structure, process, or apparatus

Apparatus

Tool rotating in horizontal plane

404 841, 404119, E01C 1922

Patent

active

055845983

ABSTRACT:
A concrete-floor finisher includes a plurality of rotary shafts (28) supported on a supporting plate (2) of a machine proper (1) so as to be tiltable in x and y directions and rotatable opposite to each other, and a plurality of blades (12a to 12d) radially arranged relative to a rotor (10) at the lower part of each of the rotary shafts and respectively held in place by a plurality of fitting members (13), and a rocking supporting unit (14) for the fitting member of each blade is composed of a fixed plate (15) attached to the upper surface of the blade, a holding member (16) attached to the vertical plate portion of the fixed plate, a bearing (18) pivotally supporting substantially the central portion of the holding member (16) by a supporting pin (17) extended in the tangential direction of the circle of rotation, and means for fitting a square cylindrical portion (19) of the bearing onto the forward end of the fitting member and removably fixing in place with a bolt (21) or the like, thus ensuring 20.degree. freedom of vertical rocking movement for each of the blades and thereby bringing the blades into parallel contact with the concrete.

REFERENCES:
patent: 4046484 (1977-09-01), Holz, Sr. et al.
patent: 4775306 (1988-10-01), Kikuchi et al.

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