US 11,925,826 B2
Dry sprinkler assemblies
Yoram Ringer, Providence, RI (US); Manuel R. Silva, Jr., Cranston, RI (US); George B. Coletta, West Warwick, RI (US); Roger H. Leduc, Pascoag, RI (US); and Sean D. Weed, Warwick, RI (US)
Assigned to Tyco Fire Products LP, Cranston, RI (US)
Filed by Tyco Fire Products LP, Lansdale, PA (US)
Filed on Mar. 22, 2021, as Appl. No. 17/208,493.
Application 17/208,493 is a continuation of application No. 15/230,272, filed on Aug. 5, 2016, granted, now 10,953,252.
Application 15/230,272 is a continuation of application No. 13/877,443, granted, now 9,440,104, previously published as PCT/US2012/044704, filed on Jun. 28, 2012.
Claims priority of provisional application 61/501,959, filed on Jun. 28, 2011.
Prior Publication US 2021/0205645 A1, Jul. 8, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A62C 35/62 (2006.01); A62C 35/68 (2006.01); A62C 37/12 (2006.01); A62C 37/14 (2006.01)
CPC A62C 35/62 (2013.01) [A62C 35/68 (2013.01); A62C 37/12 (2013.01); A62C 37/14 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A sprinkler, comprising:
an inlet fitting comprising a passageway extending from a first inlet end to a second inlet end, an outer surface of the inlet fitting defines a groove between the first inlet end and the second inlet end and a tool engagement portion at the second inlet end;
the tool engagement portion having a lesser outer diameter than a body portion of the inlet fitting, the body portion between the groove and the tool engagement portion;
a seal assembly that seals the passageway, the seal assembly comprising a conical portion and a spring seal between the conical portion and an inner surface of the inlet fitting;
an outlet frame comprising an outlet, a deflector, and at least one frame arm extending from the outlet to the deflector, a length from the first inlet end to the deflector is greater than or equal to 9 inches and less than or equal to 48 inches;
a thermal trigger between the outlet and the deflector, the thermal trigger comprising a solder link coupled with a strut and a lever, the thermal trigger having a temperature rating of a nominal value of 135, 155, 165, 175, 200, 214 or 286 degrees Fahrenheit plus or minus 20 percent of the nominal value;
an inner tube coupled with the seal assembly and extending from the seal assembly towards the outlet, the inner tube moves to unseal the seal assembly responsive to the operation of the thermal trigger; and
a casing tube extending from a first tube end coupled with the second inlet end to a second tube end coupled with the outlet frame.