Fire extinguishers – Processes – Of extinguishing fire
Reexamination Certificate
2006-12-05
2010-12-28
Tran, Len (Department: 3752)
Fire extinguishers
Processes
Of extinguishing fire
C169S005000, C169S008000, C169S014000, C169S016000, C169S017000, C169S018000, C169S019000, C169S020000, C169S037000, C169S043000, C169S044000, C169S047000, C169S056000, C169S061000, C239S208000, C239S209000
Reexamination Certificate
active
07857069
ABSTRACT:
A method for activating a sprinkler system comprises maintaining a liquid extinguishant in system pipes under a standby pressure that is less than the operating pressure, determining an arrangement of the sprinklers that will control a fire, and opening the sprinkler system valve in response to a drop in pressure in each of the pipes to which at least one of the sprinklers of the arrangement is connected. An alternate method comprises providing a bypass around the system valve, and opening the system valve in response to (1) a predetermined flow of liquid extinguishant through the bypass and (2) a drop in pressure in the sprinkler system below a predetermined pressure. In a variation of the alternate method, the system valve is opened in response only to a predetermined flow of liquid extinguishant through the bypass.
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English language translation of JP 07012382.
Cernoch Steven M
FM Global Technologies LLC
Merek & Blackmon & Voorhees, LLC
Tran Len
LandOfFree
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