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:
Jan. 05, 2016
Filed:
May. 31, 2006
Applicants:
Dennis R. Hughes, Hartford, WI (US);
Hyungsik Lee, Mequon, WI (US);
Inventors:
Dennis R. Hughes, Hartford, WI (US);
Hyungsik Lee, Mequon, WI (US);
Assignee:
AOS HOLDING COMPANY, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F23N 5/24 (2006.01); F23N 5/10 (2006.01); F23N 5/02 (2006.01); F23N 5/00 (2006.01);
U.S. Cl.
CPC ...
F23N 5/242 (2013.01); F23N 5/102 (2013.01); F23N 5/003 (2013.01); F23N 2025/16 (2013.01); F23N 2031/08 (2013.01); F23N 2031/18 (2013.01); F23N 2035/14 (2013.01);
Abstract
A secondary safety circuit for a gas-fired device and method of operating the circuit. The secondary safety circuit includes a low-voltage direct current power source, a valve, and at least one sensor. The valve can be positioned in a pilot burner gas line. The secondary safety circuit ensures the valve is closed upon detecting an unsafe condition with the sensor.