Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1996-04-26
1998-07-28
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15 82, 15182, 15383, 15DIG5, 37257, E01H 104
Patent
active
057847568
ABSTRACT:
A debris cleaning device is equipped with a compound auger which has a rigid inner auger portion with auger fighting and a plurality of compliant combing attachments connected to the edge of the fighting. Instead of the compound auger, a helical rotary brush with a dense inner region of shorter stiffer bristles and a less populous outer region of longer bristles may be used. The cleaning device also has a suction mechanism with a nozzle located about at the midway point of the length of the auger (or rotary brush). The auger (or rotary brush) is positioned horizontally with its rotational axis co-linear with, or parallel to, an axle of supporting wheels so that the auger (or rotary brush) follows the contour of the surface being cleaned as do the wheels, thereby preventing the auger (or rotary brush) from digging into uneven terrain. The auger (or rotary brush) is positioned at a height above the surface which allows the outer edges of the compliant combing attachments (or longer bristles) to contact the surface. As the attachments (or longer bristles) engage the surface, they dislodge material and help convey it along the axis of the auger (or rotary brush) to a central collection area in front of the auger (or rotary brush) where the nozzle is located. The material is then drawn in through the nozzle by the suction mechanism. The pneumatically conveyed material is then shredded by a fan and exhausted to a collection hopper.
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Culpepper Martin L.
Slocum Alexander H.
Massachusetts Institute of Technology
Moore Chris K.
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