Chemistry: electrical and wave energy – Apparatus – Coating – forming or etching by sputtering
Patent
1975-09-11
1977-03-15
Mack, John H.
Chemistry: electrical and wave energy
Apparatus
Coating, forming or etching by sputtering
B03C 502
Patent
active
040123103
ABSTRACT:
An electrostatic water treatment system in which the high voltage d.c. supply for the charging electrode is alternately turned on and off at lower and upper voltage limits and is turned off whenever the current exceeds the desired value. The alternating voltage produced by the on-off operation of the high voltage supply is utilized to check the control circuit and provide an indication whenever the circuit is operating improperly.
REFERENCES:
patent: 2470741 (1949-05-01), Gordon
patent: 2726356 (1955-12-01), Rockafellow
patent: 3250695 (1966-05-01), Winslow, Jr. et al.
patent: 3446724 (1969-05-01), Winslow, Jr. et al.
patent: 3518174 (1970-06-01), Inoue
patent: 3547801 (1970-12-01), Albright et al.
Barnard John K.
Clark David C.
Hammar Ralph
Mack John H.
Progressive Equipment Corporation
Weisstuch Aaron
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