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:
Aug. 08, 1995
Filed:
Jul. 16, 1993
Applicant:
Inventor:
J Scott Jamieson, Waukesha, WI (US);
Assignee:
Johnson Service Company, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23Q / ;
U.S. Cl.
CPC ...
431 25 ; 431 18 ; 431 74 ; 431 80 ; 431 26 ; 431 24 ;
Abstract
A circuit for producing signals representative of at least two flame current levels is disclosed herein. The circuit includes two electrodes locatable in a flame, where a voltage potential is set up between the electrodes, and the current flow is measured therebetween (flame current). The circuit includes an amplifying portion for amplifying the flame current and applying a signal to a microprocessor. The microprocessor samples the signal and outputs a signal representative of the flame current level.