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Browse Prior Art Database

Circuit Line Tool

IP.com Disclosure Number: IPCOM000047188D
Original Publication Date: 1983-Oct-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Roucek, JA: AUTHOR

Abstract

Copper ribbon for repairing circuit line breaks can be severed near the weld by using an offset tool to nick the ribbon and then pulling the free end of the ribbon with a cam-actuated clamp to rupture the weakened area at the nick. Referring to Fig. 1, circuit line 1 on board 2 is repaired by welding end 3 of copper ribbon 4 by electrodes (not shown). The entire repair assembly then is moved to the left over the ribbon, allowing a second weld to be made at 5. Thereafter, jaws 6, 7 of clamp 8 are closed on ribbon 4, and nicker 9 is rotated downwardly onto the ribbon to produce a transverse nick or depression in the ribbon. Clamp 8 is further retracted while gripping the ribbon, causing a rupture at the nick. A cam surface 10 acts on plunger 11 to tighten against the ribbon during retraction.

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Circuit Line Tool

Copper ribbon for repairing circuit line breaks can be severed near the weld by using an offset tool to nick the ribbon and then pulling the free end of the ribbon with a cam-actuated clamp to rupture the weakened area at the nick. Referring to Fig. 1, circuit line 1 on board 2 is repaired by welding end 3 of copper ribbon 4 by electrodes (not shown). The entire repair assembly then is moved to the left over the ribbon, allowing a second weld to be made at 5. Thereafter, jaws 6, 7 of clamp 8 are closed on ribbon 4, and nicker 9 is rotated downwardly onto the ribbon to produce a transverse nick or depression in the ribbon. Clamp 8 is further retracted while gripping the ribbon, causing a rupture at the nick. A cam surface 10 acts on plunger 11 to tighten against the ribbon during retraction. Upon upward rotation of nicker 9, clamp 8 can be moved forward to the right with sufficient ribbon extending to permit a first weld at the next repair location. Figs. 2 and 3 show alternate embodiments of nicking devices. In Fig. 2, pads 12 extend beyond nicker blade 13 to contact the surface of the board and limit travel. In Fig. 3, pads 12 are arranged to limit the nicker depression by contacting the surface of ribbon.

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