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Fail save shut off valve for filtering systems employing candle filters

United States Patent

January 3, 2006
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
The invention relates to an apparatus that acts as a fail save shut off valve. More specifically, the invention relates to a fail save shut off valve that allows fluid flow during normal operational conditions, but prevents the flow of fluids in the event of system failure upstream that causes over-pressurization. The present invention is particularly well suited for use in conjunction with hot gas filtering systems, which utilize ceramic candle filters. Used in such a hot gas system the present invention stops the flow of hot gas and prevents any particulate laden gas from entering the clean side of the system.
VanOsdol; John (Fairmont, WV)
The United States of America as represented by the United States Department of Energy (Washington, DC), N/A (
10/ 263,279
September 24, 2002
U.S. GOVERNMENT RIGHTS The United States Government has rights in this invention pursuant to the employer-employee relationship of the Government to the inventor as a U.S. Department of Energy employee at the Federal Energy Technology Center.