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:
Sep. 27, 1983
Filed:
Aug. 14, 1981
Applicant:
Inventors:
Susumu Naito, Nagoya, JP;
Toshifumi Yamana, Nagoya, JP;
Assignee:
Rinnai Kabushiki Kaisha, Aichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F23N / ;
U.S. Cl.
CPC ...
431 76 ; 1261 / ;
Abstract
A safety apparatus for shutting down a room heating device upon detecting incomplete combustion in the burner of the heating device. A detecting element is arranged to provide an output to a setting circuit. When the output changes due to a change in combustion, the circuit cuts off fuel supply. Additional circuitry is provided to vary the predetermined operation level of the circuit depending on whether a room air circulation fan is operating or not.