Winch construction for a vibratory concrete screed

Details Winch construction for a vibratory concrete screed Winch construction for a vibratory concrete screed

1994-06-28

1995-06-13

Neuder, William P.

Road structure, process, or apparatus

Apparatus

Means to agitate material

404119, E01C 1922

Patent

active

054236282

ABSTRACT:
A winch assembly is connected to each end of a vibratory concrete screed to move the screed across a concrete slab to be finished. Each winch assembly includes a rotatable drum with a cable wound on the drum. The free end of each cable is connected to a fixed object mounted along the side of the concrete slab. To wind the cable on the drum and move the screed along the slab, the eccentric drive shaft of the screed is connected through a variable speed belt drive to the respective drum. Each belt drive includes an adjusting mechanism for varying the effective diameter of a belt drive pulley, thus providing a variation in speed. Each winch assembly also includes an eccentric gear speed reducing mechanism, which is connected between the belt drive and the drum to further reduce the output speed to the cable drum.

REFERENCES:
patent: 4712450 (1987-12-01), Takamiya et al.
patent: 4758114 (1988-07-01), Artzberger
patent: 4898065 (1990-02-01), Ogata et al.
patent: 5030184 (1991-07-01), Rennerfelt
patent: 5324240 (1994-06-01), Guttinger

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