The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2005
Filed:
Aug. 20, 2002
Bon F. Shaw, Independence, MO (US);
Bradford T. Stilwell, Blue Springs, MO (US);
John K. Schaefer, Gladstone, MO (US);
Paul H. Kohne, Blue Springs, MO (US);
Bon F. Shaw, Independence, MO (US);
Bradford T. Stilwell, Blue Springs, MO (US);
John K. Schaefer, Gladstone, MO (US);
Paul H. Kohne, Blue Springs, MO (US);
Fike Corporation, Blue Springs, MO (US);
Abstract
This invention relates to a method of converting Halon-based fire suppression systems by substituting HFC 125 for the Halon without the need for changing the in place existing distribution piping. An amount of HFC 125 greater than the amount of Halon utilized in the fire suppression system is provided, which is under a pressure to effect exhaustion of the HFC 125 of the system within a time range exceeding about 10 seconds and up to about 25 seconds and which meets the standard fire extinguishing requirements for Class A and Class B fires. An existing fire suppression system is analyzed for flow characteristics to find Tof that system. The greater quantity Cof HFC 125 required for the retrofitted system is determined by the formula=((−10)/(2×)−×100) wherein=0.×(−10)/(/100))+. The method may also be utilized to determine the amount of HFC 125 required for the retrofitted fire suppression system.