Environmental waste-control process for spray rinsing chemically treated articles
US5194095A · kind A · utility
Inventor
Key dates
| Filing date | Sep 16, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Sep 16, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D21/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process and apparatus that includes multiple counterflow rinsing of chemically treated, anodized, plated or otherwise processed workpieces, utilizing a single on-line spray-rinse tank or station with successively less concentrated or contaminated rinse solutions that are sequentially pumped from one or more off-line tanks or reservoirs that provide at least three overlapping counterflow spray rinse cycles that cover the treated workpiece or workpieces which can be supported individually or together in a bulk processing barrel in the spray-rinse tank, whereby the workpiece or pieces are decontaminated for any additional processing of a finished part using a minimum amount of water or rinse solution during the rinsing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.