Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1993-09-17
1995-02-14
Scherbel, David A.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15420, A47L 510
Patent
active
053883055
ABSTRACT:
A high speed propane power buffer is provided with a dust evacuation system. A peripheral skirt is telescopically depended from a hood overlying the high speed rotating buffer pad. This skirt, at the extremity adjacent the surface to be polished, is supplied with angularly inclined grooves sloped away from the radial disposition with respect to the buffer. These angularly inclined grooves slope from the outside of the skirt to the inside of the skirt in the direction of buffer disc rotation at the disc periphery and are maintained by the telescoping skirt immediately adjacent the surface being polished. Entrained air is drawn at the surface being polished in the direction of buffer disc rotation from the outside of the skirt to the inside of the skirt through the slanting louvers establishing a buffer dust confining boundary at the depending peripheral skirt immediately adjacent the floor. Overlying the rotating buffer disc, the protective hood defines a concavity between the top of the buffer and the underside of the protective hood. This concavity can expand in the direction of buffer rotation from a narrow buffer to hood dimension circumferentially beyond a hood dust collection aperture to a large buffer to hood dimension at the dust collection aperture. When buffer rotation occurs, air is entrained by the upper surface of the rotating buffer disk. This accumulates air and stalls at the large hood volume overlying the top surface of the buffer immediate the dust collection aperture of the protective hood.
REFERENCES:
patent: 2801437 (1957-08-01), Okun
patent: 3314099 (1967-04-01), Otto
patent: 3678534 (1972-07-01), Hilbig
patent: 3719966 (1973-03-01), Lamont
patent: 4598440 (1986-07-01), Wilson
patent: 4731895 (1988-03-01), Zack
patent: 4939811 (1990-07-01), Matunaga
patent: 5163203 (1992-11-01), Tanasescu
Scherbel David A.
Surtec, Inc.
Till Terrence R.
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