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. 16, 2013
Filed:
Feb. 02, 2010
Isao Hirokawa, Hamamatsu, JP;
Tetsuaki Nakayama, Hamamatsu, JP;
Yasuyuki Watanabe, Hamamatsu, JP;
Toshihiro Kondo, Hamamatsu, JP;
Atsumu Naoi, Wako, JP;
Hideyuki Ushiyama, Wako, JP;
Isao Hirokawa, Hamamatsu, JP;
Tetsuaki Nakayama, Hamamatsu, JP;
Yasuyuki Watanabe, Hamamatsu, JP;
Toshihiro Kondo, Hamamatsu, JP;
Atsumu Naoi, Wako, JP;
Hideyuki Ushiyama, Wako, JP;
Yutaka Giken Co., Ltd., Hamamatsu-shi, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A heat exchange tube is constructed by forming, on a cylindrical tube peripheral wall, a plurality of projecting portions which project to an inside of the tube peripheral wall, and which are formed by pushing. The plurality of projecting portions are formed, respectively, into conical shapes across a tube axis, and are arranged along virtual spirals on the tube peripheral wall. Accordingly, it is possible to provide a heat exchange tube which facilitates formation of a plurality of projecting portions with the thickness hardly changed and without formation of protruded portions, and which is capable of contributing to enhancement of heat exchanging efficiency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile