Patent ID: 6336509
Filing Date: 2002-01-08
Classification: A62C

Abstract:
A low pressure, early suppression fast response sprinkler comprising:a generally tubular body having an inlet end, an opposing discharge end and an internal passageway extending between the inlet and discharge ends with 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; a deflector coupled with the tubular body and spaced from and generally aligned with the discharge end of the internal passageway so as to be impacted by a flow of water issuing from the discharge end of the 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; a closure releasably positioned at the discharge end of the tubular body so as to close the internal passageway; and a heat responsive trigger in the form of a fluid containing glass bulb mounted to releasably retain the closure at the discharge end of the tubular body, the glass bulb having a response time index of less than 100 meterÂ½secÂ½ (mÂ½secÂ½).