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:
May. 10, 1977
Filed:
Dec. 04, 1975
Billy J Davis, East Peoria, IL (US);
Harry J Dawson, Dunlap, IL (US);
Ervin E Mangus, Brimfield, IL (US);
Kenneth J Miller, Peoria, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A method of making a heat exchanger sheet is disclosed including progressively forming an elongated flat sheet of metal into a continuously corrugated sheet having a plurality of deeply drawn convolutions which extend across the sheet, and compressing the periphery of the corrugated sheet to provide a substantially flattened edge portion while retaining a centrally disposed corrugated portion with minimal cold working thereof. Preferably, the sheet made thereby has convolutions with slightly sloping walls to better provide a geometrically uniform overlapped pattern in the flattened edge portion thereof.