Patent · US Expired

Scattered light smoke alarm

US6828913B2 · kind B2 · utility

7Cited by

6References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ulrich Oppelt · Zorneding, DE
Andreas Hensel · Egmating, DE
Bernd Siber · Glonn, DE
Anton Pfefferseder · Oberhaching, DE

Key dates

Filing date	Apr 9, 2002
Grant date	Dec 7, 2004
Priority date	—
Expiry date	Apr 14, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG08B17/107
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A dispersion light smoke detector has a structure for providing a definite measuring volume, the structure being formed as two light receivers or an imaging optical system for one light receiver.

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