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. 16, 2006
Filed:
May. 22, 2002
Klaus Bott, Durmersheim, DE;
Alexander Diebold, Rastatt, DE;
Jürgen Hoffmann, Baden-Baden, DE;
Reiner Kind, Rastatt, DE;
Klaus Bott, Durmersheim, DE;
Alexander Diebold, Rastatt, DE;
Jürgen Hoffmann, Baden-Baden, DE;
Reiner Kind, Rastatt, DE;
Siemens Building Technologies AG, Zurich, CH;
Abstract
The invention relates to a flame-monitoring device in which an a.c. input voltage (U) is limited to a voltage limit (U) by means of a voltage limiter (). Said voltage limit (U) is applied to a flame sensing device () which operates by means of the rectifying effect of a flame, and through which a current (i) flows, especially when a flame () is present. An asymmetric voltage limit (U) can be defined by said voltage limiter (), said limit being then applied to the sensing device ().