Apparatus for electrostatically coating bulb interiors

Details Apparatus for electrostatically coating bulb interiors Apparatus for electrostatically coating bulb interiors

1975-03-11

1976-12-28

McIntosh, John P.

Coating apparatus

Carbonizing, flame contact or burning off of coating ingredient

118622, 118308, B05C 1900, B05B 502

Patent

active

039995089

ABSTRACT:
The invention relates to a method for the electrostatic covering with a powder layer of successive envelope for lamps. The powder each time to be provided is mixed with a transport gas and supplied to a first envelope to be covered via a duct. In order to terminate the covering operation, the supply of the powder to the transport gas is interrupted while the flow of the transport gas is maintained for cleaning the duct by blowing.

REFERENCES:
patent: 709448 (1902-09-01), Shaver
patent: 847269 (1907-03-01), Wise
patent: 1319193 (1919-10-01), Von Porat
patent: 1668080 (1928-05-01), Mack
patent: 2553625 (1951-05-01), Andersen
patent: 2811131 (1957-10-01), Lopenski et al.
patent: 2988458 (1961-06-01), Meister et al.
patent: 3182425 (1965-05-01), Goss et al.
patent: 3335024 (1967-08-01), Lopenski et al.
patent: 3715838 (1973-02-01), Young et al.

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