Circuit Line Tool
Original Publication Date: 1983-Oct-01
Included in the Prior Art Database: 2005-Feb-07
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.