Patent · US Active

Smoke detector and method of detecting smoke

US7564365B2 · kind B2 · utility

15Cited by

40References

23Claims

0Family size

Assignee

GE Security, Inc. · US

Inventors

Douglas H. Marman · Ridgefield, US
Frederick W. Eggers · Dixon, US

Key dates

Filing date	Mar 28, 2006
Grant date	Jul 21, 2009
Priority date	—
Expiry date	Jul 4, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG08B29/26
WIPO fieldControl
WIPO sectorInstruments

Abstract

A smoke detector that includes at least one image-forming reflective surface, at least one light source and at least one light sensor. In operation, at least one light source emits light from a first area thereon and the reflective surface focuses the light onto a second area that includes at least one light sensor, wherein the first area is smaller than the second area.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.