Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1979-08-06
1981-08-11
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15322, A47L 700
Patent
active
042826268
ABSTRACT:
Cleaning devices are described which include a vacuum cleaner nozzle with a sharp rim for directing incoming air down against the floor; a vacuum cleaner wherein electrostatically charged brushes that brush dirt off a floor, are electrically grounded to remove charges that could tend to hold dirt to the brushes; a vacuum cleaner head having slots that form a pair of counter-rotating vortices, and that includes an outlet that blows a stream of air at the floor region which lies between the vortices; a cleaning device that sweeps a group of brushes against the ground along a first direction, and then sweeps them along the same ground area but in a second direction angled from the first by an amount such as 90.degree., to sweep up particles lying in crevices extending along any direction; a device that gently cleans a surface to remove bacteria for analysis, including an inclined wall along which cleaning fluid flows onto the surface, a vacuum chamber for drawing in the cleaning fluid, and a dividing wall spaced slightly from the surface to separate the fluid source from the vacuum cleaner chamber; and a device for providing pulses of pressured air including a chamber to which pressured air is supplied, a ball that circulates around the chamber to repeatedly close an outlet, and an air source that directs air circumferentially to move the ball around the chamber.
REFERENCES:
patent: 2293115 (1942-08-01), Child
patent: 3243830 (1966-04-01), Conrad
patent: 3345672 (1967-10-01), Lamers et al.
California Institute of Technology
Moore Chris K.
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