Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1992-04-30
1993-06-29
Tolin, Gerald P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
165185, 174252, 174257, 427 96, 428408, 428901, H05K 720
Patent
active
052240177
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.
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The Charles Stark Draper Laboratory Inc.
Tolin Gerald P.
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