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:
Nov. 18, 2003
Filed:
Jun. 17, 2002
Benjamin P. Gundale, St. Louis Park, MN (US);
The Bergquist Company, Chanhassen, MN (US);
Abstract
A method of enhancing the heat dissipating properties of a rigid substrate plate through creation of an array of erect spaced-apart parallelly disposed metallic fins projecting from the heat dissipating surface of the plate. The fins are created by superimposing a sheet of metallic foil upon a metallic plate, with the foil being bonded to the plate by welding utilizing ultrasonic energy. The welds are formed as spaced-apart parallel bands, with the foil being slit adjacent one edge of the band, with the foil thereafter being folded outwardly to form the heat dissipating metallic foil fins. The folding operation is undertaken following the steps of populating the substrate, thereby eliminating the requirement for unusual steps or precautions to protect what otherwise would be outwardly extending metallic fins.