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.

Date of Patent:
Sep. 24, 2002

Filed:

Jan. 15, 2001
Applicant:
Inventors:

Eugene E. Rhodes, Belleville, MI (US);

Greg Whitlow, Whitmore Lake, MI (US);

Wen F Yu, Ann Arbor, MI (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 1/304 ; B21D 2/802 ; B23P 1/526 ;
U.S. Cl.
CPC ...
B21D 1/304 ; B21D 2/802 ; B23P 1/526 ;
Abstract

A tube and turbulator and method of making the same for a heat exchanger including a base, a top spaced from and opposing the base, a first side interposed between the base and the top along one side thereof, and a second side interposed between the base and the top along another side thereof. The base, top, first side and second side form a channel. The second side is triple hemmed such that ends of the base and the top are disposed within the channel. A flat turbulator may be disposed inside the tube and includes a base extending laterally and longitudinally in a strip. The flat turbulator also includes a plurality of corrugations spaced laterally along the base and extending longitudinally and generally perpendicular to the base in an alternating manner. The corrugations are rolled in a direction parallel to a longitudinal axis of the strip.


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