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:
Apr. 09, 1991
Filed:
Oct. 31, 1988
Gary F Goth, Pleasant Valley, NY (US);
Kevin P Moran, Wappingers Falls, NY (US);
Michael L Zumbrunnen, Poughkeepsie, NY (US);
International Business Machines Corporation, New York, NY (US);
Abstract
An otherwise conventional multi-chip circuit module called a thermal conduction module (TCM) is provided with 'barrel shaped' pistons that give improved cooling for chips that may be tilted with respect to their pistons. The piston has a cylindrical mid-section and tapered end sections. The barrel shape permits the piston to tilt with the chip even though the mid-section has the desirable close fit of conventional convex face pistons. The length of the mid-section is selected to permit the piston to tilt to the angle of the taper of the ends. Because the piston can tilt with the chip, the end that contacts the chip is flat for good heat transfer. The result is improved heat transfer by a lower combined thermal resistance of the gap between piston and chip and the gap between piston and hat versus conventional pistons.