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:
Jun. 29, 1993
Filed:
Apr. 30, 1992
Jacob H Martin, Wellesley, MA (US);
The Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
Abstract
A composite heat transfer device is disclosed, for mounting with an object having a predetermined coefficient of thermal expansion, including a composite heat conductive member having a quantity of first and second materials; the first material having a positive coefficient of thermal expansion and the second material having a negative coefficient of thermal expansion. The first and second materials are combined in a quantity ratio to produce a composite heat transfer device with a coefficient of thermal expansion which can be closely tailored to match the predetermined coefficient of thermal expansion of the object with which heat is to be transferred. Also included is a heat transfer assembly including a circuit board on which are located a plurality of heat generating devices. The circuit board is mounted proximate a composite heat conductive member. The composite heat conductive member is mounted proximate a hollow core structure which forms passageways through which may flow a fluid medium. The fluid medium serves to transfer heat from the heat conductive member.