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:
Mar. 12, 2002
Filed:
May. 01, 2000
Kunihiko Nishishita, Konan, JP;
Takashi Sugita, Konan, JP;
Other;
Abstract
The present invention provides fins utilized in an integrated heat exchanger that achieve a highly effective prevention of heat conduction, do not create any cuttings during their formation and achieve a high degree of dynamic strength and a method for manufacturing these fins. The fins are each provided with a heat transfer prevention portion at the apex located between tubes of adjacent heat exchangers and the fins are formed by implementing, at least, a slit formation step in which at least a pair of slits are formed over specific intervals at an approximate center of a fin material achieving a specific width along the direction of the width, a corrugating step in which the fin material is bent to achieve a corrugated shape so that the pair of slits are at the apex of the fin material along the direction in which the fin material advances, a heat transfer prevention portion formation step in which a heat transfer prevention portion is formed by folding the area between the pair of slits forming the apex portion to the opposite direction from the apex portion and a crest cutting step in which the corrugated fin material is cut to achieve a specific number of crests.