Patent ID: 8082763

Claim:
A system for detecting operative parameters of a household appliance provided with a relatively mobile member with respect to a load-bearing frame of the household appliance, said system comprising a pressure switch, which in turn comprises a rigid casing accommodating a deformable membrane sensitive to hydraulic pressure, a ferromagnetic material core fastened to the membrane, and a winding fastened to the casing and operatively coupled with the core to form a variable inductance electrical inductor; wherein the pressure switch is coupled with said relatively mobile member so as to follow movements of said relatively mobile member; and said variable inductance electrical inductor is operatively associated to a ferromagnetic material bracket integrally carried by the frame and arranged externally to the pressure switch, with a predetermined clearance (g) between the bracket and the casing, so that the pressure switch is adapted to output an electrical signal (S) in response to a variation of the clearance (g) induced by a relative movement between the bracket and the casing consequent to each variation of position of the relatively mobile member with respect to the frame.