The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2015
Filed:
Nov. 26, 2012
Gerd Wedler, Dresden, DE;
Ralf Behrens, Herrsching, DE;
Erwin Berchtold, Penzberg, DE;
Markus Schulz, Stockdorf, DE;
Thorsten Schultze, Ratingen, DE;
Ingolf Willms, Erkrath, DE;
Wolfgang Kruell, Duisburg, DE;
Gerd Wedler, Dresden, DE;
Ralf Behrens, Herrsching, DE;
Erwin Berchtold, Penzberg, DE;
Markus Schulz, Stockdorf, DE;
Thorsten Schultze, Ratingen, DE;
Ingolf Willms, Erkrath, DE;
Wolfgang Kruell, Duisburg, DE;
APPARATEBAU GAUTING GMBH, Gauting, DE;
Abstract
A scattered radiation fire detector having radiation sources of different wavelengths and a scattered radiation sensor, which are arranged and formed so that their optical axes are directed at a common centre of a scattering volume. A sensor unit is furthermore formed to register forward scattering I(λ) of a first radiation source, forward scattering I(λ) of a second radiation source and backward scattering I(λ) of a further first radiation source, to calculate scattered radiation intensity quotients Q=I(λ)/I(λ), Q=I(λ)/I(λ) and Q=I(λ)/I(λ) and to detect the existence of a fire situation using the scattered radiation intensity quotients.