Powder material processing apparatus

Details Powder material processing apparatus Powder material processing apparatus

1977-01-04

1979-07-17

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Electric charging of objects or materials

Particulate matter

361227, 361229, H05B 502

Patent

active

041617657

ABSTRACT:
An improved powder material processing apparatus is described herein, in which a plurality of wire-shaped electrodes are disposed within an imaginary plane at an equal interval and in parallel to each other. An insulator layer is interposed between the adjacent wire-shaped electrodes to prevent spark discharge from being generated by an A.C. high voltage applied between the adjacent wire-shaped electrodes. A silent discharge region is established between said adjacent wire-shaped electrodes, and positive and negative charges are separately given to the particles forming said powder material by making uncharged powder material pass through said silent discharge region, resulting in formation of powder material consisting of substantially equal numbers of positively charged particles and negatively charged particles, whereby control characteristics of the processed powder material can be greatly improved and the above-mentioned charging process can be effected continuously at a high efficiency.

REFERENCES:
patent: 3841264 (1974-10-01), Masuda
patent: 3872361 (1975-03-01), Masuda
patent: 4029995 (1977-06-01), Itoh

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