ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,175, issued on April 22, was assigned to Honeywell International Inc. (Charlotte, N.C.).
"Monitoring an aerosol density level in a fire sensing device" was invented by Benjamin H. Wolf (Leicester, Great Britain), Christopher Dearden (Melton Mowbray, Great Britain) and Michael Barson (Nuneaton, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "Devices, methods, and systems for monitoring an aerosol density level in a self-testing fire sensing device are described herein. One device includes an adjustable particle generator configured to generate aerosol, an optical scatter chamber configured to measure an aerosol density level of the aeroso...