Circulation system for biocidal gas
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United States of America Patent
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-
Nov 17, 1981
Grant Date -
N/A
app pub date -
Sep 5, 1980
filing date -
Sep 5, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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