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. 24, 1983
Filed:
Jul. 27, 1981
Applicant:
Inventors:
Brian J Hinton, Crystal, MN (US);
William M Papic, Eden Prairie, MN (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23Q / ;
U.S. Cl.
CPC ...
431 26 ; 431 25 ; 431 46 ;
Abstract
A fuel burner control system that is fail safe and which controls three fuel burner functions is provided for. The system utilizes two different digital clock means that are separated in time from one another to ensure separate gating of the fuel burner output functions. The system further uses a negative power supply with respect to the circuit ground for control purposes while energizing the output switch means with a positive potential thereby eliminating inadvertent operation in the event of circuit component failures.