Gas separation – With nonliquid cleaning means for separating media – Solid agent cleaning member movingly contacts apparatus
Reexamination Certificate
2006-07-19
2009-06-23
Smith, Duane (Department: 1797)
Gas separation
With nonliquid cleaning means for separating media
Solid agent cleaning member movingly contacts apparatus
C055S304000, C055S305000, C055S337000, C055S343000, C055S345000, C055S356000, C055S385100, C055S467000, C055S484000, C055SDIG030
Reexamination Certificate
active
07550021
ABSTRACT:
A portable dust collection system for a wood shop or other dust producing environment is employed with a sander, power saw, router or other dust-producing tool such as a woodworking tool. A movable platform has a vertical intake pipe supporting a head portion formed with a shroud. A centrifugal impeller drives the intake air stream plus any entrained particles into one or more cyclonic separators, which deposit the dust in a respective drum supported on the platform beneath the cyclone. The air inlet from the tool enters the vertical pipe at a point partway up the pipe, so that large particles drop to the bottom end of the pipe, where a clean-out door is provided. The exhaust or discharge air from the cyclonic separator(s) passes out through a filter cartridge to the ambient. A deflector plate prevents the dust from eddying back into the separator.
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Standish, Michael; Portable Dust Collectors,Fine Woodworking, Mar./Apr. 2006, pp. 38, ff.
Bui Dung
Molldrem, Jr. Bernhard P.
Smith Duane
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