Circulation system for biocidal gas
US4301113A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Sep 5, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2/24
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In the treatment of articles with a sterilant gas such as an alkylene oxide, and the circulation of the gas throughout a treatment chamber containing the articles to be treated, a gas circulating system completely devoid of electrical contacts, switches, electrical motors and other potentially dangerous electrical components which could cause explosive ignition of the sterilant gas. The circulation system includes a fluid-driven turbine-like impeller completely isolated from the sterilant gas, and drivingly coupled to a fan blade which serves to force the gas through conduits and to circulate and recycle the sterilant gas throughout the treatment chamber. In a second embodiment of the invention a magnetically coupled drive is used to actuate the sterilant-circulating fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.