A fluid transporting device is of a writhing type for transporting a fluid continuously. The fluid transporting device comprises a plurality of push pins arranged along a tube and radially on a concentric arc for squeezing a portion of the tube through which the fluid is fed and having elasticity substantially...http://www.google.de/patents/US7950908?utm_source=gb-gplus-sharePatent US7950908 - Fluid transporting device of a peristalic type with tube and push pin arrangement
