A fluid-flow regulating device is comprised of (a) a plurality of driving mechanisms each of which has a chamber, a diaphragm disposed at an opening of the chamber, a light-heat conversion substance accommodated in the chamber, and an operating fluid stored in the chamber, (b) a fluid-flow passage along...http://www.google.fr/patents/US5346372?utm_source=gb-gplus-shareBrevet US5346372 - Fluid flow regulating device
