Sweeping machine with movable recirculation flap

Details Sweeping machine with movable recirculation flap Sweeping machine with movable recirculation flap

1998-08-25

2000-06-13

Graham, Gary K.

Brushing, scrubbing, and general cleaning

Machines

Brushing

E01H 104

Patent

active

060732954

ABSTRACT:
A sweeping machine has a chassis, wheels for supporting the chassis and a brush mounted on the chassis for rotation to throw debris over the brush and into a debris hopper mounted on the chassis behind the brush. There is a control lever on the chassis for raising and lowering the brush relative to a surface to be swept. As the brush wears, a recirculation flap is positioned between the brush and the debris hopper and located closely adjacent a rear portion of the brush to direct debris not reaching the debris hopper forwardly toward the brush sweeping zone. The recirculation flap is moved toward and away from the brush concurrently with movement of the brush toward the surface being swept as the brush wears, whereby the space between the rear portion of the brush and the recirculation flap remains relatively constant.

REFERENCES:
patent: 742657 (1903-10-01), Hosfeld
patent: 1042860 (1912-10-01), Whittome
patent: 3093853 (1963-06-01), Tamny
patent: 3584325 (1971-06-01), Larsen et al.
patent: 3930277 (1976-01-01), Wulff
patent: 5276933 (1994-01-01), Hennessey et al.

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