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:
Jul. 22, 2008
Filed:
Jul. 16, 2001
Douglas T. Queheillalt, Charlottesville, VA (US);
Haydn N. G. Wadley, Keswick, VA (US);
Yasushi Katsumi, Charlottesville, VA (US);
Douglas T. Queheillalt, Charlottesville, VA (US);
Haydn N. G. Wadley, Keswick, VA (US);
Yasushi Katsumi, Charlottesville, VA (US);
University of Virginia Patent Foundation, Charlottesville, VA (US);
Abstract
A method and an apparatus for the efficient transfer of heat utilizing micro heat pipes that include a cellular foam or interconnected cellular/truss network having hollow ligaments. A predetermined fraction of the internal volume of the hollow ligaments is filled with a carefully chosen working fluid, and the ends of the hollow ligaments are sealed. In operation, the working fluid evaporates in the region of high heat flux and condenses in regions of lower temperature, resulting in the transfer or redistribution of the fluid's latent heat of vaporization. For open cell foams and interconnected networks, a second fluid flowing through the open cells, separate from the working fluid but also in thermal contact with the hollow ligaments, assists in the transfer of heat from the foam and networks.