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. 12, 2002
Filed:
Oct. 31, 2000
Applicant:
Inventors:
James M. Niziolek, Enfield, CT (US);
William M. Clark, Windsor, CT (US);
James M. Bialobrzeski, Suffield, CT (US);
Terry M. Grayson, Granby, CT (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B 1/712 ;
U.S. Cl.
CPC ...
G08B 1/712 ;
Abstract
An ionic flame monitor. The flame monitor has a flame rod that produces an ionization current when the flame rod is immersed in a flame and excited by a voltage. The ionization current has a DC component and an AC component each dependent on the intensity of the flame, and a flicker frequency. The flame monitor also has a computing device that is responsive to signals representative of the flicker frequency, and the AC and DC components of the ionization current for determining the existence of the flame.