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:
Mar. 09, 1999
Filed:
Jun. 18, 1997
Chris Wheaton, San Francisco, CA (US);
Silicon Graphics, Inc., Mountain View, CA (US);
Abstract
A EMI shield which includes a heat sink and a compression coupling. A top housing formed of electrically conductive material is placed over a circuit board containing electronic devices and is electrically coupled to an electrical ground through contact along the length of a conductive strip which is connected to an electrical ground. A bottom housing formed of electrically conductive material is connected to an electrical ground through electrical contact along the length of a conductive strip located on the bottom of the circuit board so as to form a EMI shielding enclosure. The top housing is formed of thermally conductive material and includes extended surfaces for conducting heat away from the electronic devices contained below the top housing. In addition, the bottom housing is formed of thermally conductive material so as to form a thermally conductive enclosure which acts as a heat sink, effectively cooling the electronic devices contained therewithin. A compression coupling mechanism which uses springs to press the top housing towards the bottom housing gives consistent electrical contact between a microprocessor and a circuit board.