Keeping Direction Unchanged During Rotation 07 February 2018, 21:00 Sorry, your browser doesn't support embedded videos, but don't worry, you can download it and watch it with your favorite video player! The direction of the red object is unchanged. Using chain (or tooth belt) drive. The sprockets have the same number of teeth. « previous mechanism Poker Concrete Vibrator next mechanism » Geneva Mechanism load comments Please enable JavaScript to view the comments.