Vibratory/pneumatic powder coating apparatus and method

Details Vibratory/pneumatic powder coating apparatus and method Vibratory/pneumatic powder coating apparatus and method

1998-05-01

1999-10-12

Pike, Andrew C.

Conveyors: fluid current

With means to control conveying fluid or movement of load in...

Control of load input or output

406 56, 406 75, 406 82, B65G 5340

Patent

active

059645512

ABSTRACT:
A powder coating apparatus and method feeds fine powdered coating material such as thermoplastic type material to a succession of discrete articles passing by the apparatus which includes a vibratory feeder bowl and a spiral track for delivering a substantially constant supply of powder coating material to the articles, wherein the powdered coating material is mixed with a pressurized airstream that delivers the powdered coating material to the articles. A sensor is also used to regulate an amount of powdered coating material supplied to the auger to the vibratory feeder. The invention also provides a powder feed system that deposits an excess of powdered coating material than that required to form the coating and provides for recirculation of the powder not ultimately used to form the coating back to the powder feeding apparatus.

REFERENCES:
patent: 3091368 (1963-05-01), Harley et al.
patent: 3429423 (1969-02-01), Pirrello et al.
patent: 4708534 (1987-11-01), Gallant
patent: 4865881 (1989-09-01), Sessa et al.

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