User-activated ultra-violet water treatment unit
US6461520B1 · kind B1 · utility
33Cited by
48References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/05
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A time delay in de-energizing the electronic ballast and its associated UV lamp subsequent to cessation of water discharge from a user-activated water treatment unit ensures irradiation of the water prior to a subsequent user-activated water discharge and reduces the likelihood of any live microorganisms being present in the water subsequently discharged. A soft start of the UV lamp upon actuation of the water treatment unit reduces the mechanical stresses imposed upon the filaments of the UV lamp and the life span of the UV lamp is enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.