U.V. resistant zinc coated PVC or related plastic pipe
US4979679A · kind A · utility
45Cited by
12References
19Claims
0Family size
Inventor
Key dates
| Filing date | Sep 29, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Sep 29, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/19
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A conduit and an integrated system for utilizing same, such as a foam control spray system for a sewage treatment facility, where said conduit is exposed to a hostile environment, such as solar ultraviolet (U.V.) radiation. The conduit and transmission components of such system comprise tubular members consisting of a solar U.V. degradable plastic, such as polyvinylchloride (PVC), having a preferred outer layer of metallic zinc diffusion bonded thereto, such as by spray arc metallizing the zinc onto the plastic surface, whereby the zinc prevents deterioration or breakdown of the plastic from solar U.V. radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.