US 11,738,224 B2
Fire protection system for an enclosure and method of fire protection for an enclosure
Paul M. Johnson, Clinton, MA (US); Joseph Albert Senecal, Wellesley, MA (US); David VanZandt, Uxbridge, MA (US); and Mohammed Ateeq, Shrewsbury, MA (US)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on May 25, 2022, as Appl. No. 17/824,254.
Application 17/824,254 is a continuation of application No. 16/468,180, granted, now 11,376,458, previously published as PCT/US2017/067641, filed on Dec. 20, 2017.
Claims priority of provisional application 62/436,691, filed on Dec. 20, 2016.
Prior Publication US 2022/0288436 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A62C 99/00 (2010.01); A62C 37/36 (2006.01)
CPC A62C 99/0018 (2013.01) [A62C 37/04 (2013.01); A62C 37/36 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A fire protection system for an enclosure, comprising:
an inert agent supply source configured to discharge an inert agent following a discharge of a primary agent in the enclosure;
a gas detector configured to determine a gas concentration level in the enclosure; and
a controller connected with the inert agent supply source and the gas detector and configured to regulate the discharge of the inert agent into the enclosure based at least partially upon the gas concentration level;
wherein the gas detector is an oxygen level detector configured to determine an oxygen concentration level in the enclosure;
wherein the controller is configured to initiate discharge of the inert agent when the oxygen concentration level exceeds a predetermined oxygen concentration level threshold.