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:
Apr. 15, 2014
Filed:
Dec. 10, 2010
John S. Paschkewitz, San Carlos, CA (US);
Eric Shrader, Belmont, CA (US);
David Mathew Johnson, San Francisco, CA (US);
John Stuart Fitch, Los Altos, CA (US);
John S. Paschkewitz, San Carlos, CA (US);
Eric Shrader, Belmont, CA (US);
David Mathew Johnson, San Francisco, CA (US);
John Stuart Fitch, Los Altos, CA (US);
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Abstract
A hybrid pin-fin micro heat pipe heat sink consists of a plurality of heat pipes secured to a base. The heat pipes have a generally hollow cross-section which transitions from a first cross-sectional shape (e.g., circular) to a second cross-sectional shape (e.g., triangular). A heat transfer medium (e.g., saturated steam) is sealed within the heat pipes. Cooling plates may be disposed over the base with the heat pipes in physical contact with and passing through the cooling plates. The method of manufacturing the heat pipes consists of passing a heat transfer medium through a pipe section having a first cross-sectional shape while transitioning to a second cross-sectional shape (e.g., by way of a rolling die press), then crimping the ends closed to seal the heat transfer medium therein.