US 12,257,466 B2
Dry pipe accelerator systems and methods
James O. Williams, Marlborough, MA (US); and Joshua Motha, Tiverton, RI (US)
Assigned to Tyco Fire Products LP, Cranston, RI (US)
Appl. No. 17/612,416
Filed by Tyco Fire Products LP, Lansdale, PA (US)
PCT Filed May 19, 2020, PCT No. PCT/IB2020/054743
§ 371(c)(1), (2) Date Nov. 18, 2021,
PCT Pub. No. WO2020/234773, PCT Pub. Date Nov. 26, 2020.
Claims priority of provisional application 62/970,242, filed on Feb. 5, 2020.
Claims priority of provisional application 62/850,022, filed on May 20, 2019.
Claims priority of provisional application 62/850,024, filed on May 20, 2019.
Prior Publication US 2022/0233900 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A62C 35/66 (2006.01); A62C 35/62 (2006.01); A62C 35/64 (2006.01); A62C 35/68 (2006.01); A62C 37/20 (2006.01)
CPC A62C 35/66 (2013.01) [A62C 35/62 (2013.01); A62C 35/645 (2013.01); A62C 35/68 (2013.01); A62C 37/20 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A sprinkler accelerator system, comprising:
an accelerator comprising:
at least one accelerator opening coupled with at least one pipe, the at least one pipe coupled with at least one sprinkler, a gas including at least one of air and nitrogen in the at least one pipe;
a vent; and
an actuator assembly that moves, responsive to a rate of change of a first pressure applied by gas in the at least one accelerator opening satisfying a pressure rate threshold, to couple the at least one accelerator opening with the vent; and
at least one orifice coupled with the at least one pipe to adjust the rate of change of the first pressure responsive to the at least one sprinkler changing to an open state.