Rack Pinwheel Drive 23 December 2016, 19:00 Sorry, your browser doesn't support embedded videos, but don't worry, you can download it and watch it with your favorite video player! Turn blue pin arm 360 deg. to move yellow latch for locking or unlocking. Unlike conventional pin gear rack mechanisms this one does not allow the latch move if driving force is applied to the latch at its locking or unlocking positions. « previous mechanism Snap Motion next mechanism » Barrel Cam for Deg. Rotation load comments Please enable JavaScript to view the comments.