Gas supply system for a powder-fluidizing apparatus

Details Gas supply system for a powder-fluidizing apparatus Gas supply system for a powder-fluidizing apparatus

2008-04-22

2008-04-22

Koch, George (Department: 1791)

Coating apparatus

Program, cyclic, or time control

Having timer

C118S702000, C118S629000, C118S064000, C118S062000

Reexamination Certificate

active

07361227

ABSTRACT:
A coating apparatus includes a container and a perforated plate separating a plenum from a coating chamber. A gas supply system delivers a gas to the plenum in a sufficient amount for passage of the gas through the plate and suspension of a powder in a fluidized condition in the chamber. The gas supply system preferably includes a primary portion for continuously delivered gas and a controllable pulsing portion for supplementing the gas from the primary portion. In a first mode of operation, the gas from the pulsing portion is cycled to provide variation in the fluidized volume. In a second mode, the pulsing portion delivers relatively long pulses of gas to mix the fluidized powder.

REFERENCES:
patent: 3888423 (1975-06-01), Ganiaris
patent: 3918401 (1975-11-01), Blakeslee
patent: 4262039 (1981-04-01), Gyarmati et al.
patent: 5242718 (1993-09-01), Gillette et al.
patent: 5454256 (1995-10-01), Gimben et al.
patent: 5766557 (1998-06-01), Luy et al.

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