The prototype of Gear Pump with Different Teeth

The prototype has been made by American University of Armenia http://cse.aua.am/erc/cadcam-projects/ as a students' CAD/CAM project under supervision of my favorite instructor Sargis Zeytunyan. The prototype is made of plastics for easy manufacturing with HAAS CNC milling machine. It has demonstration purpose, which shows that pump freely delivers water with no pulsation! Below are its video (taken in bathroom) and photos: