US PATENT SUBCLASS 352 / 208
.~ Rotary

Current as of: June, 1999
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352 /   HD   OPTICS: MOTION PICTURES

204  DF  SHUTTERS {3}
208.~ Rotary {7}
209  DF  .~.~> With speed-adjusted aperture size
210  DF  .~.~> With apertured or radially deviating blade
211  DF  .~.~> Ventilating
212  DF  .~.~> With light modifying blades {1}
214  DF  .~.~> With axially spaced independently driven blades {2}
218  DF  .~.~> With plural blades on spaced axis
219  DF  .~.~> Single drive (e.g., disc type) {1}

DEFINITION

Classification: 352/208

(under subclass 204) Subject matter in which the light interrupting means moves in an arcuate direction across the light path about a fixed axis in either a continuous or an oscillatory fashion.