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:
Oct. 10, 1995
Filed:
Jun. 02, 1993
Applicant:
Inventors:
Mark M Lazar, New Berlin, WI (US);
Marvin A Lucas, Wilwaukee, WI (US);
Assignee:
Johnson Service Company, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23N / ; F23N / ;
U.S. Cl.
CPC ...
431 19 ; 431 29 ; 431 31 ; 431 20 ; 236 / ;
Abstract
The present invention relates to an intelligent transient eliminator which allows a gas ignition system to prevent gas valves from being turned off by a pressure switch in response to a transient pressure wave. The transient eliminator is preferably provided in a HVAC unit or furnace which burns a fuel such as natural gas. An ignition control system employing an intelligent transient eliminator provides a secondary relay across the pressure switch. The secondary relay is controlled by a signal to an ignitor in the furnace. The secondary switch is tested before energizing the inducer blower in the system.