US 11,986,689 B2
Water mist protection for forced ventilation interstitial spaces
Sean E. Cutting, West Warwick, RI (US); and Alex Palau Bosch, Barcelona (ES)
Assigned to Tyco Fire Products LP, Cranston, RI (US); and LPG TECNICAS EN EXTINCION DE INCENDIOS, S.L., Barcelona (ES)
Filed by Tyco Fire Products LP, Lansdale, PA (US)
Filed on Dec. 13, 2021, as Appl. No. 17/548,954.
Application 16/538,346 is a division of application No. 15/550,714, granted, now 10,413,764, previously published as PCT/US2016/018120, filed on Feb. 16, 2016.
Application 17/548,954 is a continuation of application No. 16/538,346, filed on Aug. 12, 2019, granted, now 11,207,553.
Claims priority of provisional application 62/116,400, filed on Feb. 14, 2015.
Prior Publication US 2022/0096886 A1, Mar. 31, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A62C 3/16 (2006.01); A62C 3/00 (2006.01); A62C 35/58 (2006.01); A62C 99/00 (2010.01); H02G 3/04 (2006.01)
CPC A62C 3/16 (2013.01) [A62C 3/00 (2013.01); A62C 35/58 (2013.01); A62C 99/0072 (2013.01); H02G 3/0412 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A fire protection system, comprising:
a plurality of upright fire protection devices disposed in an interstitial space having an upper side and a lower side, the plurality of upright fire protection devices spaced apart in a spacing of at least 6 feet by 6 feet, each upright fire protection device having a working pressure of 110 pounds per square inch (psi) to 250 psi, each upright fire protection device comprising:
a body comprising an inlet to receive water, an outlet, a passageway between the inlet and the outlet, and a pair of frame arms about the outlet that converge to an apex;
a seal in the outlet;
a thermally responsive trigger coupled with the seal, the thermally responsive trigger comprising a glass bulb, the thermally responsive trigger having a temperature rating greater than or equal 175 degrees Fahrenheit and less than or equal to 200 degrees Fahrenheit, the thermally responsive trigger having a response time index less than or equal to 50 (meters-seconds)1/2; and
a diffuser spaced from the outlet by the pair of frame arms and coupled with the apex, the diffuser comprising a planar member, wherein the planar member comprises a flat plate having a plurality of tines at a periphery of the planar member, a distance from the diffuser to a structure of the upper side of the interstitial space is less than or equal to 4 inches.