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:
Jan. 07, 1992
Filed:
Aug. 24, 1990
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A heat exchanger such as used as an inter cooler for cooling an intake air of an internal combustion engine has an inner fin which is provided within a tube through which heat transfer medium such as an intake air flows. The inner fin has a plurality pairs of a first vertical wall portion and a second vertical wall portions, a first horizontal wall portion connecting an upper end of the first vertical wall portion to an upper end of the second vertical wall portion, and a second horizontal wall portion connecting a lower end of the first vertical wall portion to a lower end of the second vertical wall portion. The inner fin further has a plurality of slits formed from the vertical wall portion side of the first horizontal wall portion via entire length of the vertical wall portion until the vertical wall portion side of the second horizontal wall portion. The fin pitch P, the length L of vertical wall portion between adjacent pair of the slits, and the width S of the slit are as follows.