Patent · US Expired

Fire detector

US7978087B2 · kind B2 · utility

28Cited by

24References

29Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bernd Siber · Glonn, DE
Andreas Hensel · Egmating, DE
Ulrich Oppelt · Zorneding, DE
Jack McNamara · Pittsford, US

Key dates

Filing date	Nov 23, 2004
Grant date	Jul 12, 2011
Priority date	—
Expiry date	Apr 30, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG08B17/113
WIPO fieldControl
WIPO sectorInstruments

Abstract

A fire detector operating by the scattered radiation principle is described, having at least one radiation transmitter and at least one radiation receiver, whose beam paths form a scattering volume. The fire detector includes, in addition to at least one first radiation transmitter and one first radiation receiver, at least one second radiation transmitter and one second radiation receiver, whose beam paths form at least two spatially separated scattering volumes.

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