Color change system for spray coating apparatus

Details Color change system for spray coating apparatus Color change system for spray coating apparatus

1980-08-12

1982-06-29

Kendall, Ralph S.

Coating processes

Spraying

118302, 239112, 239305, B05B 700

Patent

active

043372821

ABSTRACT:
A color change system for spray coating apparatus is characterized by two pumps, each of which is connectable with a selected color of coating material for providing the same to spray coating apparatus. The arrangement is such that the pumps alternately supply different colors of coating material to the coating apparatus, and when one of the pumps is supplying material the other is being cleansed of previously supplied material. In this manner, one pump is always clean and ready for supplying a newly selected color of material, so that any number of different colors of coating material may be provided to the coating apparatus with minimum numbers of pumps, e.g., two pumps. In one embodiment the color change system is used with automatic spray coating apparatus, and in another with manual or hand held coating apparatus.

REFERENCES:
patent: 3145930 (1964-08-01), Herklotz et al.
patent: 3348774 (1967-10-01), Wiggins
patent: 3674205 (1972-07-01), Kock
patent: 3870233 (1975-03-01), Wilhelm

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