Electrocoating apparatus and method of use thereof

Details Electrocoating apparatus and method of use thereof Electrocoating apparatus and method of use thereof

1981-10-07

1984-06-05

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204181C, 204300EC, C25D 1318

Patent

active

044526806

ABSTRACT:
An electrocoating apparatus has a plurality of cells movable successively to each of a plurality of operating stations. An electrical circuit is provided to monitor the cells and initiate the application of electrical pulses to each cell if the cell has not exhibited any faults. Each cell is subjected to a test at two selected operating stations and the result of each test is entered as a binary digit in a respective shift register. As the cell is advanced each binary digit is similarly advanced in its shift register by clock pulses. Unidirectional electrical pulses are applied as electrocoating pulses at electrocoating stations such that each cell is normally subjected to three successive discrete pulses. However, if a cell which has failed either of the test arrives at the electrocoating stations, the presence of its binary digit in the appropriate stage of the shift register inhibits the application of electrocoating pulses thereto. Furthermore, application of the electrocoating pulses to a cell is immediately interrupted if the cell goes short circuit.

REFERENCES:
patent: 3305467 (1967-02-01), Igras et al.
patent: 3476666 (1969-11-01), Bell et al.
patent: 4082642 (1978-04-01), Honig

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