Brushing – scrubbing – and general cleaning – Machines – Wiping
Patent
1997-07-09
1999-09-14
Chin, Randall E.
Brushing, scrubbing, and general cleaning
Machines
Wiping
A47L 11162
Patent
active
059502703
ABSTRACT:
The invention is a single-wheel floor-polishing machine provided with drive wheel comprising two coaxial, opposite cup-shaped elements connected with each other by means of one or more traction elastic elements suitable for raising the polishing wheel from the floor. The upper cup is mechanically connected with the electric motor and the lower cup is connected with the rigid rotary plate that supports the polishing wheel. The polishing wheel rotation generates a centrifugal air vortex under the polishing wheel itself, which results in the formation of an area below normal atmospheric pressure, as a consequence of which the polishing wheel is attracted to the floor. In the starting phase the polishing wheel is raised from the ground and free to rotate; the polishing wheel does not overheat because the pressure is automatically regulated according to the polishing wheel rotation speed, to the type of floor and to the elasticity of the traction springs.
REFERENCES:
patent: D223945 (1972-06-01), Bousquet
patent: 2774089 (1956-12-01), Brown
patent: 3397419 (1968-08-01), Okun
patent: 5579554 (1996-12-01), Plazanet
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