Classifying – separating – and assorting solids – Electrostatic
Reexamination Certificate
2006-05-16
2006-05-16
Walsh, Donald P. (Department: 3653)
Classifying, separating, and assorting solids
Electrostatic
C209S128000, C209S129000, C209S130000, C209S131000
Reexamination Certificate
active
07045734
ABSTRACT:
A D.C. voltage altering device includes at least one spark induction power conditioner including a first electrode connectable to a high voltage D.C. power source and a second electrode spaced from the first electrode and forming a discharging gap therebetween. The second electrode is connectable to a predetermined section of a physical separator and at least one of the electrodes is selectively positionable for altering spatial distance between same. The power conditioner induces a predetermined large amplitude, high frequency current ripple to the second electrode for creating a fluctuating voltage and fluctuating electrostatic field and maintaining continuous current flow through the gap without reversal of polarity. The spark induction power conditioner further includes a dielectric base for housing the electrodes and a plurality of fastening members threadably positionable through the base and engageable with the electrodes so that the discharging gap between the electrodes can be selectively adjusted.
REFERENCES:
patent: 3739554 (1973-06-01), Whetten et al.
patent: 5755333 (1998-05-01), Stencel et al.
patent: 6797908 (2004-09-01), Yan et al.
Grey Thomas J.
Yan Eric S.
Miller Jonathan R
Outokumpu Oyj
Walsh Donald P.
Yeager Arthur G.
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