Geometrical instruments – Gauge – Screw thread
Reexamination Certificate
2008-03-18
2008-03-18
Fulton, Christopher W (Department: 2859)
Geometrical instruments
Gauge
Screw thread
C408S007000, C408S069000
Reexamination Certificate
active
11426813
ABSTRACT:
A thread checking apparatus and method for threaded bores in small plastic parts, in which a threaded tap is mounted to rotate on a fixed axis at a workstation, the workstation having guide structure associated with the rotating tap to slidingly engage and guide a part with a threaded bore onto a free outer end of the rotating tap. The rotating tap draws the part down the length of the tap in sliding, rotation-preventing engagement with the guide structure, until the part's threaded bore is fully verified and chased, at which point the part engages a reversing limit switch to automatically reverse the rotation of the tap and drive the chased and verified part back off the tap.
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Fulton Christopher W
Northern Michigan Patent Law PLC
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