A fluid transportation system includes an elastic tube, a tube frame to which the tube is attached such that the tube forms a circular arc, a first cam and a second cam disposed inside the tube, and fingers which radially extend from a rotation center in the space between the tube and the first and second...http://www.google.com/patents/US20070128060?utm_source=gb-gplus-sharePatent US20070128060 - Fluid transportation system, method for setting discharge amound of fluid
