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:
Aug. 18, 1987
Filed:
Sep. 19, 1986
Izumi Ono, Hachioji, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A cooling device located between a cooling plate having a first coolant circulating therein, and an electronic part to be cooled, mounted on a printed-wiring board, comprising a hollow part being thermally conductive, having a hollow chamber through which the first coolant circulates, and connected to the cooling plate by a flange part being thermally conductive, a thermal conduction plate attached to a surface of the electronic part and connected to the flange part by a bellows providing a space among the hollow part, the bellows and the thermal conduction plate, and a second liquid coolant filling the space for transferring heat from the thermal conduction plate to the hollow part by a convection current of the second coolant. The second coolant is made of alloy being chemically inactive to the bellows and having a low melting point so as to be liquid at ordinary temperatures.