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:
Jul. 17, 2018
Filed:
Jul. 22, 2013
Rinnai Corporation, Nagoya-shi, Aichi, JP;
Hideo Okamoto, Nagoya, JP;
Rinnai Corporation, Nagoya-shi, Aichi, JP;
Abstract
A combined combustion device comprises: a plurality of combustion units () each having a burner () and an air supply fan (); an exhaust collecting pipe () connecting the plurality of the combustion units () to each other; and a check valve () which opens by rotation of the air supply fan () and prevents backflow of combustion exhaust gas from the exhaust collecting pipe () into each of the combustion units (), wherein when one or more of the combustion units () among the plurality of the combustion units () are in a combustion operation state and the other one or more of the combustion units () are continuously maintained in a non-combustion operation state for a predetermined reference stoppage time or longer, the air supply fans () of the other one or more of the combustion units () are rotated for a certain time.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile