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:
Feb. 05, 1991
Filed:
Apr. 04, 1989
Ali R Safabakhsh, Lafayette Hills, PA (US);
Vincent G Amorosi, Warminster, PA (US);
Kulicke and Soffa Industries, Inc., Willow Grove, PA (US);
Abstract
A die ejector chuck is provided with a central housing and an outer housing and the central housing is provided with a die eject collar which extends through an aperture in the outer housing. A preselected die on a flexible adhesive tape is positioned over the die eject collar and a source of vacuum is applied to apertures in the outer housing. The outer housing is moved upward and away from the central die eject collar so as to stretch the flexible adhesive tape by a die eject pin to permt the preselected die to be picked up with a die collet acting with a light pulling force on the active surface of the preselected die.