Method and apparatus for positioning spark plug electrodes

Details Method and apparatus for positioning spark plug electrodes Method and apparatus for positioning spark plug electrodes

1996-03-26

1998-03-10

Bradley, P. Austin

Electric lamp or space discharge component or device manufacturi

Process

With testing or adjusting

445 7, 445 64, 445 67, H01T 2102

Patent

active

057254052

ABSTRACT:
A center electrode of a spark plug has an oval shape in cross section as an identification mark. An electrode positioning apparatus fixedly holds a ground electrode and rotates an insulator together with a center electrode relative to the ground electrode. During the rotation, a signal light is irradiated toward the center electrode and the shape of the identification mark is detected from the received signal light. When the shape of the mark comes to correspond to a predetermined pattern, the center electrode is stopped from rotating and fitted solidly with the ground electrode.

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