US 12,076,597 B2
Fire protection system for sloped combustible concealed spaces
John Desrosier, Plymouth, MA (US); Thomas Edwin Archibald, Midland, MI (US); Kevin Desmond Maughan, North Kingstown, RI (US); Kenneth Wayne Rogers, Omer, MI (US); Kim Phillip Gordon, Sterling Heights, MI (US); and Stephen J. Meyer, Chester Springs, PA (US)
Assigned to VICTAULIC COMPANY, Easton, PA (US)
Appl. No. 16/337,763
Filed by Globe Fire Sprinkler Corporation, Standish, MI (US)
PCT Filed Feb. 7, 2019, PCT No. PCT/US2019/017028
§ 371(c)(1), (2) Date Aug. 16, 2021,
PCT Pub. No. WO2019/160740, PCT Pub. Date Aug. 22, 2019.
Claims priority of provisional application 62/630,313, filed on Feb. 14, 2018.
Prior Publication US 2021/0353988 A1, Nov. 18, 2021
Int. Cl. B05B 1/26 (2006.01); A62C 35/58 (2006.01); A62C 35/64 (2006.01); A62C 35/68 (2006.01); B05B 1/06 (2006.01)
CPC A62C 35/68 (2013.01) [A62C 35/58 (2013.01); A62C 35/64 (2013.01); B05B 1/06 (2013.01); B05B 1/267 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A fire protection system for a combustible concealed space, the combustible concealed space comprising:
a pitched roof constructed of a plurality of generally spaced apart structural members extending downwardly and outwardly from a ridgeline of the roof to an eave of the roof, the plurality of structural members defining respective channels therebetween, and
the fire protection system comprising:
a first row of sprinklers nearest the ridgeline, the sprinklers being mounted to a first branch line extending generally parallel to the ridgeline, wherein:
(i) each sprinkler is positioned within a respective channel,
(ii) consecutive sprinklers along the first row are spaced apart having no less than one channel therebetween without a sprinkler of the first row positioned therein,
(iii) consecutive sprinklers along the first row are spaced apart having no more than five channels therebetween without a sprinkler of the first row positioned therein,
(iv) a plurality of the sprinklers along the first row include respective first fluid deflectors, the first fluid deflector being configured to produce a first spray distribution pattern, and;
a second row of sprinklers mounted to a second branch line extending generally parallel to the first branch line, the second row of sprinklers being positioned downslope from the first row of sprinklers, wherein:
(i) each sprinkler of the second row is positioned within a respective channel,
(ii) consecutive sprinklers along the second row are spaced apart having no less than one channel therebetween without a sprinkler of the second row positioned therein,
(iii) consecutive sprinklers along the second row are spaced apart having no more than five channels therebetween without a sprinkler of the second row positioned therein, and
(iv) a plurality of the sprinklers along the second row each include a sprinkler frame having a respective first and second frame arms and a corresponding second fluid deflector secured to the sprinkler frame, the second fluid deflector being differently shaped than the first fluid deflector, and the second fluid deflector being asymmetrical about a plane defined through the first and second frame arms, a greater portion of the second fluid deflector being oriented downslope of the plane than upslope of the plane, the second fluid deflector thereby being configured to project fire suppression fluid both upslope and downslope and being configured to project more fire suppression fluid downslope than upslope; and
wherein:
(i) each sprinkler of the second row is placed within a different channel from each of the sprinklers of the first row; and
(ii) a farthest number of channels between a sprinkler of the first row and a sprinkler of the second row is three channels without any sprinkler of the first row or sprinkler of the second row.