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. 07, 1988
Filed:
Dec. 11, 1985
Applicant:
Inventor:
Faquir C Mittal, Audubon, PA (US);
Assignee:
Unisys Corporation, Detroit, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361382 ; 361385 ; 357 82 ;
Abstract
The capability of the microbellows cooling technique to remove heat from multi-chip modules is enhanced with a highly conductive, rigid, heat spreader. The heat spreader has a planar surface urged against a planar surface of the chip by the flexible microbellows. The surface area of the heat spreader is greater than the mating surface area of the chip. The heat spreader is attached to the bottom surface of the microbellows. The surface area of the heat spreader which mates with the surface of the chip is highly polished and coated with a highly conductive soft metal. A jet of coolant is forced into the inner surface of the microbellows.