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:
Jul. 12, 1988
Filed:
Aug. 12, 1986
Applicant:
Inventors:
Mituo Kudoh, Tsuchiura, JP;
Takuji Torii, Ushiku, JP;
Seigo Miyamoto, Katsuta, JP;
Yoshitomo Sawahata, Hitachi, JP;
Mizuho Yokoyama, Katsuta, JP;
Masaru Takenouchi, Tsuchiura, JP;
Yoshifumi Kunugi, Ibaraki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28D / ;
U.S. Cl.
CPC ...
165151 ; 165152 ;
Abstract
A heat exchanger comprising fins and at least one heat transfer tube. An even number, not smaller than four, of louvers are severed and raised in an alternate and staggered manner with respect to a fin base line between the remaining adjacent fin base. Furthermore, the louvers raised on the same side with respect to the fin base line have heights defined by a line slanted at a constant angle in a stepped manner.