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:
Oct. 09, 2007
Filed:
Mar. 28, 2006
Takaya Otsuki, Kyoto, JP;
Masahiro Ishikawa, Kyoto, JP;
Takaya Otsuki, Kyoto, JP;
Masahiro Ishikawa, Kyoto, JP;
Nidec Corporation, Kyoto, JP;
Abstract
A method for manufacturing a heat sink for use in a heat sink fan is provided. A heat-sink base portion defining a central axis and a circumferential surface is formed. A plurality of heat-radiating fins is formed on the circumferential surface of the base portion. Each of the heat radiating fins extends away from the central axis and defines at least one radially distal edge. After the base portion and the heat-radiating fins are formed, a distal-edge protrusion or a recess is formed on or in at least one of the heat radiating fins by a machining process, so as to form partially along the envelope of the heat sink at least one discrete engagement feature.