US 11,694,525 B2
Hazard detector with optical status indicator
Matthew J. Buchholz, Canon City, CO (US); and Kenneth J. Mott, Colorado Springs, CO (US)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Appl. No. 16/629,832
Filed by CARRIER CORPORATION, Palm Beach Gardens, FL (US)
PCT Filed Jul. 9, 2018, PCT No. PCT/US2018/041265
§ 371(c)(1), (2) Date Jan. 9, 2020,
PCT Pub. No. WO2019/014110, PCT Pub. Date Jan. 17, 2019.
Claims priority of provisional application 62/530,722, filed on Jul. 10, 2017.
Prior Publication US 2021/0158663 A1, May 27, 2021
Int. Cl. G08B 5/38 (2006.01); G08B 17/103 (2006.01); G08B 17/117 (2006.01); G08B 5/36 (2006.01); G08B 17/06 (2006.01)
CPC G08B 5/38 (2013.01) [G08B 5/36 (2013.01); G08B 17/06 (2013.01); G08B 17/103 (2013.01); G08B 17/117 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A life safety device comprising:
a housing;
a transmitter for generating a light, the transmitter being positioned within the housing;
a receiver for measuring ambient light around the life safety device, the receiver being positioned within the housing adjacent the light transmission device; and
a light transmission device disposed within the housing adjacent to the transmitter, a first end of the light transmission device being visible at an exterior of the housing, the light transmission device including:
at least one port located adjacent to the transmitter and being operable to communicate light from the transmitter to a first end; and
a post separate from the port for communicating the ambient light to the receiver;
wherein in a first mode of operation of the life safety device, a first light source is operable as the transmitter and a second light source is operable as the receiver and in a second mode of operation of the life safety device, the second light source is operable as both the transmitter and the receiver.