Patent ID: 7168180

Claim:
A rotary optical aligning apparatus comprising: a pendulum disk; an optical illuminator mounted in a lower portion of said disk; a sleeve adapted to be secured on a shaft of a driving motor of a rotary machine; with said pendulum disk stationarily pendently hanged on said sleeve on said shaft; a magnet annularly secured on the sleeve to be simultaneously rotated with the rotation of the shaft; and an electromagnetic coil formed in an upper portion of the said pendulum disk, and concentrically disposed around said magnet for rotatably engaging said magnet within said electromagnetic coil; said electromagnetic coil electrically connected to said illuminator; whereby upon rotation of said shaft and said magnet, said electromagnetic coil will be electromagnetically induced to produce electricity to power said illuminator for projecting an optical line to an object for alignment or marking to be processed by the rotary machine.