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. 29, 1984
Filed:
Jan. 10, 1983
Applicant:
Inventors:
William R Landis, Bloomington, MN (US);
Paul B Patton, Columbia Heights, MN (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F23N / ;
U.S. Cl.
CPC ...
431 15 ; 431 18 ; 431 24 ; 431 26 ; 431 29 ; 431 69 ; 340577 ;
Abstract
A purge time hold circuit is provided in a flame safeguard sequencer to in turn provide a safe start check of a burner control system. If a flame is indicated during a prepurge period, the purge time hold means will reset to a zero status and the timer will hold until the signal clears itself. If the flame signal does not clear itself within a preset time, a safety shut down will be commanded.
Landis, William. (1984). Flame safeguard sequencer having safe start check (U.S. Patent No. 4451226). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4451226
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile