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:
Oct. 22, 1991
Filed:
Feb. 09, 1990
Klaus Hagemeister, Munich, DE;
MTU-Motoren-und Turbinen-Union Munchen GmbH, Munich, DE;
Abstract
A tube matrix for a heat exchanger is connected between two spaced ducts for conveying a fluid from one duct to the other. The tube matrix has a plurality of spaced heat exchange tubes whose ends are secured to the ducts and which have a generally S-shape between the ducts. At the points of lateral offset and at the intermediate point therebetween, spaces are provided for keeping adjacent tubes in spaced relation from one another. Each loop of the S-shape tube is formed with two successive sections each of which includes two segments of opposite curvature such that in all there are eight segments which make up the tube. Preferably, the tube is a one piece member and the shape is formed by bending the tube. At each of the points where the tubes are secured and are connected by the spacers, tangents to the tubes extend parallel to one another.