Patent ID: 6502643
Filing Date: 2003-01-07
Classification: A62C

Abstract:
A fast response sprinkler comprising:a generally tubular body having an inlet end, an opposing discharge end, an internal passageway extending between the inlet and discharge ends and a K factor greater than 16 where the K factor equals the flow of water in gallons per minute through the internal passageway divided by the square root of the pressure of water fed into the tubular body in pounds per square inch gauge, and a plurality of support arms extending generally away from the discharge end of the generally tubular body and meeting generally along the central axis spaced from the discharge end of the generally tubular body; a deflector coupled with the generally tubular body through the plurality of support arms so as to be spaced from and generally aligned with the discharge end of the internal passageway and the central axis and impacted by a flow of water issuing from the discharge end of the internal passageway upon activation of the sprinkler, the deflector being configured and positioned to deflect the flow of water generally radially outwardly all around the sprinkler to provide suppression of a fire wherein the deflector has an outer perimeter with a plurality of slots extending therethrough and defining a circular slotless central area, the internal passageway having a minimum diameter greater than the maximum diameter of the circular slotless central area; a closure releasably positioned at the discharge end of the generally tubular body so as to close the internal passageway; and a heat responsive trigger mounted to releasably retain the closure at the discharge end of the generally tubular body, the trigger having a response time index of less than 100 meterÂ½secÂ½ (mÂ½secÂ½).