Patent ID: 11860092
Assignee: KIDDE TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A covered chamberless particulate detector for optically detecting particulates, the covered chamberless particulate detector comprising:
one or more optical emitters disposed on the chamberless detector and configured to emit light directed away from the one or more optical emitters within one or more emitting cones;
one or more optical sensors disposed on the chamberless detector and configured to detect light directed within a receiving cone toward the one or more optical sensors within one or more receiving cones; and
a protective cover disposed on the chamberless detector, the protective cover having a plurality of apertures configured to permit fluid communication and light transmission between an outside region and an inside region, wherein an inside surface of the protective cover has a reflectivity that is less than 4%;
wherein the one or more receiving cones intersects the one or more light emitting cones thereby forming two or more sensing volumes, at least one of the two or more sensing volumes located in the inside region, and at least one of the two or more sensing volumes located in the outside region,
wherein the one or more optical sensors generates a signal in response to a sensing event caused by a particulate within at least one of the two or more sensing volumes.