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:
Sep. 15, 1992
Filed:
Nov. 14, 1991
Applicant:
Inventor:
Victor M Samarov, Carlisle, MA (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
F28F / ;
U.S. Cl.
CPC ...
165185 ; 361386 ; 361387 ; 29890035 ; 174 163 ;
Abstract
A cooling apparatus for a substrate with heat generating circuit devices mounted on a first side thereof. A second side of the substrate is coated with a first layer made of a releasing agent. A second layer made of a thermally conductive material having a low melting point is provided on the first layer. A heat sink is provided on the second layer, for radiating heat transmitted from the circuit device through the substrate, the first layer and the second layer. During the assembly, the apparatus is heated and compressed to reflow the second layer reducing any air pocket formed at the substrate-to-heatsink interface.