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:
Mar. 19, 2013
Filed:
May. 12, 2010
Hauke Dittmer, Fehmarn Ot. Bannesdorf, DE;
Dirk Siemer, Rethwisch, DE;
Peter Zuelzer, Hamburg, DE;
Bernd Ziems, Zarpen, DE;
Axel Grothoff, Neumuenster, DE;
Arne Stamer, Siebenbaeumen, DE;
Kurt Lenkeit, Suelfeld, DE;
Hauke Dittmer, Fehmarn Ot. Bannesdorf, DE;
Dirk Siemer, Rethwisch, DE;
Peter Zuelzer, Hamburg, DE;
Bernd Ziems, Zarpen, DE;
Axel Grothoff, Neumuenster, DE;
Arne Stamer, Siebenbaeumen, DE;
Kurt Lenkeit, Suelfeld, DE;
Minimax GmbH & Co. KG, Bad Oldesloe, DE;
Abstract
A fire alarm consists of a housing in which sensors, a radiation source, and an optical window are disposed. A reflector protection basket or ring is disposed above the optical window. The basket or ring is suitable for protecting the optical window against mechanical influences, allows UV and IR radiation to pass through to a sufficient degree, and reflects UV and IR radiation from the housing interior, on its inside. Monitoring of the contamination of the window, function monitoring of the sensors and of the signal processing electronics, as well as easy replaceability of the components in the fire alarm are provided.