Patent ID: 8133426

Claim:
An injection molding method, comprising: forming, using an injection molding tool, a workpiece within a mold, the mold comprising a mold cavity formed by a core, a plurality of cavity sides, and first and second extraction tips, wherein the workpiece has a plurality of undercut features formed in notches within the core, wherein after forming, the first and second ends of the workpiece sections are engaged with the first and second extraction tips, respectively, wherein the first and second extraction tips are coupled to respective first and second retraction plates disposed on opposite sides of the core; and flexing sections of the workpiece apart from each other to at least partially separate the workpiece from the core by applying an extraction force on the first and second ends of the workpiece by moving the first and second retraction plates away from the core to pull apart the sections of the workpiece having the undercut features, wherein moving the first and second retraction plates away from the core comprises laterally retracting first and second cavity walls coupled to the first and second retraction plates, respectively, in opposing directions away from the core.