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:
Sep. 18, 2018
Filed:
Nov. 11, 2013
Mahle Filter Systems Japan Corporation, Tokyo, JP;
Shozo Wakamatsu, Fujimino, JP;
MAHLE FILTER SYSTEMS JAPAN CORPORATION, Tokyo, JP;
Abstract
By stacking a plurality of core plates () each of which has, around a peripheral edge of a base portion (), an outer peripheral tapered portion () that expands outward, and joining the outer peripheral tapered portions () of adjacent core plates by brazing, a heat exchanging fluid passage () is defined between the base portions () of the adjacent core plates. Outer and inner peripheral surfaces of the outer peripheral tapered portion are shaped to extend straightly in cross section. A leading end part of the outer peripheral tapered portion () is formed at the inner peripheral surface thereof with a recess () that is depressed toward the outer peripheral surface.