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:
Aug. 10, 2021
Filed:
Oct. 18, 2019
International Business Machines Corporation, Armonk, NY (US);
David M. Audette, Colchester, VT (US);
Dustin Fregeau, South Burlington, VT (US);
David L. Gardell, Fairfax, VT (US);
Peter W. Neff, Lamoille, VT (US);
Frederick H. Roy, III, Williston, VT (US);
Grant W. Wagner, Jericho, VT (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A probe card assembly for nondestructive integrated circuit testing is disclosed. The probe card assembly includes an outer gimbal bearing with a tapered bearing surface being mounted on a top surface of a printed circuit board. The probe card assembly further includes an inner gimbal bearing with a spherical bearing surface which contacts the tapered bearing surface of the outer gimbal bearing at a single point of contact about a circumference thereof. The probe card assembly further includes a spring plate mounted to the outer gimbal bearing, providing a downward force to a substrate.