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:
Jul. 10, 1990
Filed:
Apr. 07, 1989
Applicant:
Inventor:
Scott Craft, Phoenix, AZ (US);
Assignee:
Motorola Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05H / ;
U.S. Cl.
CPC ...
361386 ; 165185 ; 174 163 ; 357 81 ; 361386 ; 361388 ;
Abstract
Electrically insulating but thermally conductive 'heat shunt' components are attached to PC boards along with regular electronic components to improve heat dissipation. The heat shunts are typically a small bar of thermally conductive ceramic with spaced-apart metal mounting pads on the ends for soldering to the PC board. Their shape is similar to standard electronic components for placement by automatic machinery and they extend, for example, from a transistor collector contact pad on the PC board to an adjacent ground lead having holes plated through to the metal back plane of the PC board in contact with the heat sink.