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. 01, 2001
Filed:
Jan. 11, 1996
Applicant:
Inventors:
Gregory Martin Chrysler, Poughkeepsie, NY (US);
Richard Chao-Fan Chu, Poughkeepsie, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F 7/00 ;
U.S. Cl.
CPC ...
F28F 7/00 ;
Abstract
An efficient heat sink having a high density of fins and a large effective surface area is formed by coiling a flat strip of thermally conductive material in which teeth or millifins have been formed by a stamping operation, for example. A spacer may be employed to insure fin separation. In an alternate embodiment, the strips are stacked. The resulting heat sink is particularly effective in impingement flow cooling of electronic devices, chips, circuits or modules.