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:
Mar. 09, 1993
Filed:
Mar. 14, 1991
Robert A Cargnel, Export, PA (US);
James R Morran, Apollo, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
A method is provided to replace a damaged pin in a module for an integrated circuit assembly without damaging the circuit device or chip mounted in a circuitized substrate. This method comprises brazing a new pin to the base of the old pin by capacitive discharge brazing with a ribbon of compatible metal foil, requiring no flux, and is effected by firing the charge by completing a circuit which includes a pin attachment tool, the ribbon and the power supply, but in which circuit the chip is bypassed. The arc is struck and the new pin is brazed to the old without generating sufficient heat to damage the chip, and without conducting any current through the chip. The attachment tool is uniquely adapted to clamp the new pin and locate the pin precisely over the base of the old pin.