Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1974-05-10
1976-02-24
Cohan, Alan
Fluid handling
Processes
Cleaning, repairing, or assembling
137240, 239 70, B05B 502
Patent
active
039398552
ABSTRACT:
The disclosure relates to automatic paint spray systems, typically but not necessarily of the electrostatic type, provided with color change means and facilities for recovery and re-use of the residual paint increment contained in the system at the start of a color change cycle. The system of the invention provides for an automatic color change cycle in a paint spray system, in which original paint is purged from the system by terminating the supply of the original paint and introducing purge fluids, including solvent and possibly also air. Principally, the original paint is purged through a discharge line, on the downstream side of the paint spray devices, and is collected in a suitable receptacle, along with the purged solvent. A unique feature of the new system resides in the ability of the discharge system to automatically separate and isolate the original paint from the new color paint, so that the purged paint may be collected in a segregated container and re-used.
In a high volume appliance production operation, for example, it may be necessary or desirable to execute a color change cycle dozens of times in a typical production day, so that significant savings can be realized by enabling segregated collection and ultimate re-use of the purged materials. In a typical commercial installation, savings in excess of $20,000 per year are to be anticipated. Perhaps more importantly, the savings of materials is of great significance because of the limited availability from time to time of some paints and solvents, regardless of cost.
REFERENCES:
patent: 3373762 (1968-03-01), Korchak
patent: 3458133 (1969-07-01), Wiggins
patent: 3674205 (1972-07-01), Kock
patent: 3716191 (1973-02-01), Knight
Cohan Alan
The Gyromat Corporation
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