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:
Apr. 14, 2015
Filed:
Dec. 21, 2010
Jozef Boros, Montgomery, AL (US);
Qian Zhang, Montgomery, AL (US);
Yoshiki Semba, Montgomery, AL (US);
Subbu Thenappan, Montgomery, AL (US);
Jozef Boros, Montgomery, AL (US);
Qian Zhang, Montgomery, AL (US);
Yoshiki Semba, Montgomery, AL (US);
Subbu Thenappan, Montgomery, AL (US);
Rheem Manufacturing Company, Atlanta, GA (US);
Abstract
The efficiencies of illustrative embodiments of vertical center flue type fuel-fired base water heaters are improved by installing in the water heaters variously configured tubular condensing type secondary heat exchangers of smaller diameters than the associated center flues. The efficiency increases are achieved with components and manufacturing processes similar to those utilized in the base water heaters and secondary heat exchanger materials similar to those in the tank portions of the base water heaters.