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. 10, 2019
Filed:
Nov. 29, 2017
Applicant:
Noritz Corporation, Hyogo, JP;
Inventors:
Assignee:
NORITZ CORPORATION, Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F 1/32 (2006.01); F24H 8/00 (2006.01); F24H 1/14 (2006.01); B23P 15/26 (2006.01); F28F 21/08 (2006.01); F28D 1/04 (2006.01); F28D 1/053 (2006.01);
U.S. Cl.
CPC ...
F28F 1/325 (2013.01); B23P 15/26 (2013.01); F24H 1/145 (2013.01); F24H 8/00 (2013.01); F28D 1/0426 (2013.01); F28D 1/05325 (2013.01); F28D 1/05375 (2013.01); F28F 21/083 (2013.01); F28F 2275/04 (2013.01); Y02B 30/102 (2013.01);
Abstract
A fin has a plurality of insertion holes in an elliptical shape through which a heat transfer tube is inserted and contains stainless steel as a material. The plurality of insertion holes are disposed as being aligned in a single row in a first direction. The fin has a first slit extending from a first end portion toward a second end portion and a second slit extending from the second end portion toward the first end portion. The second slit has a first edge portion where a cut and raised wall portion is disposed and a second edge portion where no cut and raised wall portion is disposed.