Rotary sign

Claim 1

A ROTARY SIGN CONSTRUCTION COMPRISING A HOLLOW SIGN CONSTRUCTION OF TRIANGULAR CONFIGURATION, MEANS SUPPORTING SAID SIGN FOR ROTATION ABOUT A VERTICAL AXIS, SAID SIGN INCLUDING A PLURALITY OF EQUAL SIZE SIDE PANELS, EACH OF THE SIDE PANELS INCLUDING A BACKING PANEL HAVING INDICIA FORMING A MESSAGE ON THE OUTER SURFACE THEREOF, AND A PLURALITY OF VERTICALLY DISPOSED LOUVERS DISPOSED IN PARALLEL RELATION TO EACH OTHER AND IN PERPENDICULAR RELATION TO THE BACK PANEL, SAID LOUVERS BEING SPACED FROM THE SURFACE OF THE BACKING PANEL HAVING INDICIA THEREON, ONE SURFACE OF SAID LOUVERS HAVING INDICIA THEREON COMBINING TO FORM A MESSAGE, THE OTHER SURFACE OF SAID LOUVERS HAVING INDICIA THEREON FORMING A MESSAGE WHEREBY THE MESSAGE FORMED BY THE APPROACHING SURFACES OF THE LOUVERS TOWARDS A POINT OF OBSERVATION WILL BE INITIALLY OBSERVED DURING ROTATION OF THE SIGN, THE INDICIA ON THE OUTER SURFACE OF THE BACKING PANEL BEING OBSERVED WHEN THE LOUVERS ARE SUBSTANTIALLY PARALLEL TO A LINE OF VISION FROM THE POINT OF OBSERVATION WHILE THE BACKING PANEL IS PERPENDICULAR TO THE LINE OF VISION, THE MESSAGE ON THE OTHER SURFACE OF THE LOUVERS BEING OBSERVED FROM THE POINT OF OBSERVATION AS THE LOUVERS RECEDE DURING ROTATION OF THE SIGN, SAID LOUVERS EXTEND BETWEEN AN UPPER HORIZONTAL FLANGE AND A LOWER FLANGE, SAID UPPER FLANGE HAVING A PLURALITY OF SLOTS FORMED THEREIN AND COMMUNICATING WITH ONE EDGE THEREOF FOR RECEIVING THE LOUVERS, EACH OF THE LOUVERS HAVING PROTUBERANCE MEANS ADJACENT THE UPPER END THEREOF FOR ENGAGEMENT WITH THE EDGES OF THE SLOTS FOR SUPPORTING THE UPPER ENDS OF THE LOUVERS, SPRING MEANS INTERCONNECTING THE LOWER ENDS OF THE LOUVERS AND THE LOWER FLANGE FOR SUSPENDING THE LOUVERS BETWEEN THE FLANGES.