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:
Oct. 22, 1996
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Gordon W Fenn, Brevard, NC (US);
Young M Ryoo, Ansan, KR;
Assignee:
Frontier, Inc., Ann Arbor, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F22B / ;
U.S. Cl.
CPC ...
1223673 ; 122 19 ; 122161 ; 1222 / ; 1263 / ;
Abstract
A heat exchanger is disclosed including an annular lower manifold to which a cold-water intake through which cold water comes is connected; an annular upper manifold to which a hot-water exit through which hot water is discharged is connected; a plurality of coil-shaped heat exchange tubes connected between the lower and upper manifolds; an inner liner for embracing the plurality of coil-shaped heat exchange tubes on the inner surface thereof; and an outer liner for embracing the plurality of coil-shaped heat exchange tubes on the outer surface thereof, the inner and outer liners forming a path of burned gas.