Patent ID: 7422192
Filing Date: 2008-09-09
Classification: F16K,F25D

Abstract:
1. A valve for fluids, liquids or dusts, comprising a diaphragm open/close element having a central part and a peripheral edge that are axially mobile with respect to one another between a first relative end position and a second relative end position corresponding respectively to the open condition and to the closed condition of the valve, or vice versa, and shape-memory actuator means for controlling the relative position of said central part and said peripheral edge, said valve being characterized in that said shape-memory means are operatively set between the central part and the peripheral edge of the diaphragm and are substantially parallel to the diaphragm and in that said shape-memory means comprise at least one shape-memory wire that is activated by electrical supply means and that extends at least in part along the periphery of the diaphragm.