Drive device of mobile objects following paths or alternately parallel and opposite directions, and the application to the signs and objects driven

摘要

Motion transmission apparatus for driving a plurality of objects along relative paths alternately in the same direction and in an opposite direction includes a plurality of toothed drive members constrained to moved in unison and intermesh respectively with a corresponding number of driven gears. Each driven gear is eccentrically connected to an associated rocker arm by a connecting rod. The rocker arms carry the objects to be moved.