Damage resistant recirculation flap

Details Damage resistant recirculation flap Damage resistant recirculation flap

1992-07-02

1994-01-11

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

15246, E01H 104

Patent

active

052769330

ABSTRACT:
A surface maintenance machine includes a cylindrical brush mounted in the machine for rotation about a generally horizontal axis extending transverse to the direction of machine movement. A recirculation flap is attached to the machine and extends generally coextensively with the brush and parallel thereto. The recirculation flap is normally yieldingly urged toward the brush, with contact between the flap and a floor obstacle causing the flap to move, against the force of its mounting springs, away from the brush.

REFERENCES:
patent: 1537003 (1925-05-01), Bryant
patent: 2268059 (1941-12-01), Parker et al.
patent: 2782435 (1957-02-01), Stone
patent: 3093853 (1963-06-01), Tamny
patent: 3112593 (1963-12-01), Ronning

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