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. 11, 1994
Filed:
Mar. 29, 1993
Hironobu Ueda, Kudamatsu, JP;
Toshio Hatada, Tsuchiura, JP;
Yoshifumi Kunugi, Nirasaki, JP;
Tomihisa Oouchi, Tsukuba, JP;
Sigeo Sugimoto, Ushiku, JP;
Tamio Shimizu, Ibaraki, JP;
Kyoji Kohno, Ibaraki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Louver segments of a heat transfer fin each have a longitudinal central portion disposed at the center of the louver segment in a direction crossing the flow of a fluid and longitudinal end portions each disposed on either side of the longitudinal central portion and sectioned into parts. Each louver segment has a configuration such that an area of the longitudinal central portion projected in the direction of the flow of the fluid is larger than an area of each of the longitudinal end portions projected in the direction of the flow of the fluid, with respect to the same width of the passage of the fluid.