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:
Jan. 20, 2004
Filed:
Oct. 02, 2000
Lanchao Lin, Beavercreek, OH (US);
John E. Leland, Kettering, OH (US);
The United States of America as represented by the Secretary of the Air Force, Washington, DC (US);
Abstract
A passive thermal spreader and method of fabrication are disclosed. The passive thermal spreader includes a heat transfer plate formed from laminated plates including an internal sealed thermosyphon defined within the interface of the plates. The preferred embodiment of the passive thermal spreader selected to illustrate the invention includes a pair of distinct thermosyphons defined within the interface of three laminated, stacked plates. Each thermosyphon includes a plurality of channels arranged boustrophedonically. Each of the channels includes an elongate straight portion and an end turn portion for connection to the adjacent channel elongate straight portion. Each elongate straight portion includes a channel divider. The channel divider directly contributes to the high performance of the thermal spreader of the present invention by assisting the transport of the working fluid.