Patent ID: 8132629
Filing Date: 2012-03-13
Classification: A62C,F26B

Abstract:
1. A dry type fire suppression sprinkler system comprising: a plurality of sprinkler heads being in a dosed configuration, said sprinkler heads being openable in response to a fire; a source of pressurized water; a piping network connecting said sprinkler heads to said source of pressurized water, said piping network being normally substantially devoid of water; a supply valve positioned in said piping network between said source of pressurized water and said sprinkler heads and controlling flow of water thereto, said supply valve being openable in the event of a fire allowing water to flow to said heads; an air pump in fluid communication with said piping network between said supply valve and said sprinkler heads; an air vent, separate from said air pump, said air vent being positioned in said piping network and providing fluid communication between said piping network and ambient air while said sprinkler heads are in said closed configuration; and said air pump for moving ambient air through at least a portion of said piping network through said air vent while said sprinkler heads are in said closed configuration.