Fluent material handling – with receiver or receiver coacting mea – Processes – Filling dispensers
Reexamination Certificate
2007-09-25
2007-09-25
Douglas, Steven O. (Department: 3771)
Fluent material handling, with receiver or receiver coacting mea
Processes
Filling dispensers
C141S018000, C141S071000, C141S286000, C366S309000, C366S312000, C222S185100
Reexamination Certificate
active
11348654
ABSTRACT:
A powder-fluidizing apparatus is presented which is applicable to feeding ultra-fine and nano-size powders, and powders with a broad particle size distribution, in a uniform manner over a long period of time. Generally, this is accomplished by using a rotating brush to sweep the powder through holes in a removable sieve plate, which breaks up agglomerated particles in the powder and controls the powder feed rate. The powder then drops from the holes into a funnel, where it is fluidized by being entrained into a carrier gas, and then flows through the funnel out of the apparatus to an applicator. The funnel surface is vibrated to avoid powder build-up on the surface that can break loose and cause pulses of increased material in the powder flow. Ultrasonic waves are introduced into the funnel to break up any agglomerated particles remaining in the powder before it reaches the applicator.
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Gabel Howard
Tapphorn Ralph
Douglas Steven O.
Innovative Technology Inc.
Lyon Richard T.
Lyon & Harr LLP
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