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:
Mar. 24, 1998
Filed:
Jan. 16, 1997
Applicant:
Inventors:
Henry Earl Beamer, Middleport, NY (US);
Timothy Anton Cowell, Luxembourg, LU;
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28D / ;
U.S. Cl.
CPC ...
165152 ; 165151 ; 165181 ;
Abstract
A corrugated cooling fin has a louver pattern in which the louvers in a first, lead set, successively increase in tilt angle, moving in the direction of air flow. Matching louvers in a trailing set successively decrease in tilt angle correspondingly. As a consequence, air flow is turned through the lead set, and turned back through the trailing set, in a successive, incremental fashion. The deflected air flow curve is steeper and higher, and the heat rejection rate for the fin increases enough to compensate for an increase in pressure drop across the fin.