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:
Feb. 20, 1996
Filed:
Sep. 30, 1994
Yuji Ogawa, Handa, JP;
Nippondenso Co., Ltd., , JP;
Abstract
In a heat exchanger, an inner fin is formed from a thin plate of aluminum alloy having a corrugated cross-section in a widthwise direction. The inner fin includes multiple crest surfaces extending parallel to one another in a lengthwise direction and multiple trough surfaces extending parallel to one another in the lengthwise direction. The crest surfaces and the trough surfaces are connected together by inclined surfaces. The crest surfaces have concavities which are shifted relative to one other in the lengthwise direction of the fin so that the concavities formed in adjacent crest surfaces are not aligned with one another in the widthwise direction. The inner fin inserted into the tube partitions the passages which communicate with each other through the concavities.