US PATENT SUBCLASS 359 / 231
.~.~ String or ribbon type

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

227  DF  LIGHT CONTROL BY OPAQUE ELEMENT OR MEDIUM MOVABLE IN OR THROUGH LIGHT PATH {6}
230  DF  .~ Electro-mechanical {1}
231.~.~ String or ribbon type

DEFINITION

Classification: 359/231

String or ribbon type:

(under subclass 230) Subject matter wherein electric current is applied across a resilient, electrically conducting opaque element which as a result of its location in the field of an electromagnet vibrates, thus interrupting a light path or a portion thereof in accordance with variations in the current or in the strength of the field of the electromagnet.