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:
May. 26, 1987
Filed:
Jun. 23, 1986
Michael K Avedissian, Mohnton, PA (US);
Earl D Hertzog, Reading, PA (US);
American Telephone and Telegraph Company, Berkeley Heights, NJ (US);
AT&T Technologies, Inc., Berkeley Heights, NJ (US);
Abstract
A head (158) precisely registers an article (10) to a site for operations such as bonding. The article (10) may be an electronic chip (10) containing a plurality of sides (12-15) having top edges for engaging the head (158) and bottom edges for registering to a topside (95) of a pedestal (20). A body (161) has an upper portion adapted for support and a lower portion terminating in a downwardly presented, working face (159). Face 159 includes a cavity (166) formed by walls (167-170) having inwardly and upwardly directed surfaces (171-174) for engaging corresponding top edges of the chip (10). The chip (10) is at least partially disposed within the cavity (166) making it difficult for an operator to see, especially when a fixed microscope is required for viewing. A bore (175) communicates with the cavity (166) and may be connected to a vacuum source for drawing a chip (10) into the cavity and for removably engaging the same to the engaging surfaces (171-174). Preferably, the front wall (168), facing the operator, has recessed end portions (100 and 102). Such recesses (100 and 102) reveal, preferbly extending to corners, bottom edges of the engaged chip (10) sufficient for registering such edges and the chip (10) to the topside (95) of the pedestal (20).