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. 23, 2019
Filed:
Oct. 31, 2012
Applicant:
Formfactor, Inc., Livermore, CA (US);
Inventors:
Keith J. Breinlinger, Livermore, CA (US);
Kevin J. Hughes, Livermore, CA (US);
Assignee:
FormFactor, Inc., Livermore, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/20 (2006.01); G01R 1/067 (2006.01); G01R 1/073 (2006.01);
U.S. Cl.
CPC ...
G01R 1/06705 (2013.01); G01R 1/07357 (2013.01); G01R 1/06733 (2013.01); G01R 1/06738 (2013.01); G01R 1/07314 (2013.01);
Abstract
Elongated flexible probes can be disposed in holes of upper and lower guide plates of a probe card assembly. Each probe can include one or more spring mechanisms that exert normal forces against sidewalls of holes in one of the guide plates. The normal forces can result in frictional forces against the sidewalls that are substantially parallel to the sidewalls. The frictional forces can reduce or impede movement parallel to the sidewalls of the probes in the holes.