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. 21, 1994
Filed:
Dec. 19, 1991
Joseph M Zachman, Greentown, IN (US);
Clyde E Ragan, Greentown, IN (US);
Steven L Alexander, Westfield, IN (US);
Bruce A Myers, Kokomo, IN (US);
Charles T Eytcheson, Kokomo, IN (US);
Delco Electronics Corporation, Kokomo, IN (US);
Abstract
A method and apparatus are disclosed for enabling automated printing of through holes extending between top and bottom surfaces of a ceramic substrate or the like. The perimeter of the substrate is placed on a support that locates the bottom surface of the substrate spaced from a member that interacts with the interior portion of the substrate. The interacting member has holes that correspond to the through holes in the substrate, and it is moved generally perpendicular to the substrate to a position where it is in juxtaposition with the bottom surface of the substrate and its holes are in registration with the holes in the substrate. Conductive material is applied to the top surface of the substrate and a vacuum is applied to the holes in the interacting member to pull the conductive material through the through holes in the substrate. The vacuum is then discontinued and the interacting member is moved back to a position where it is spaced from the bottom surface of the substrate.