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:
Nov. 15, 1994
Filed:
May. 28, 1993
Applicant:
Inventor:
Dwain F Moore, Holland, MI (US);
Assignee:
Robertshaw Controls Company, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23N / ;
U.S. Cl.
CPC ...
431-6 ; 431 27 ; 431 67 ;
Abstract
A fuel control system, a control unit therefor and methods of making the same are provided, the system comprising a control unit that reduces the length of the warm-up time period of an igniter in subsequent successive burner cycles in which ignition is successful until the control device detects an increase in the length of the flame detecting time period in that particular successive burner cycle over the length of the flame detecting time period on a previous burner cycle at which time the control device then increases the length of the previously reduced warm-up time period a certain amount.