Abstract: A pressure sensor including a body, device for receiving pressure associable with a tube connected to a fluid-filled tank of an electric household appliance, wherein the level of the fluid is to be measured. It further includes a device for emitting electric frequency signal proportional to the pressure received; a device carried aboard the body, on which a plurality of response frequency values emitted by the emitting means associated with corresponding pressure values at the pressure receiving means, were recorded. The pressure sensor is used with a pressure reading system carried by the device for receiving pressure. The pressure reading system includes two devices for reading values recorded on the pressure sensor, i.e. pressure and frequency values; and electric frequency signals. The pressure reading system further includes a processing device for interpolating the pressure value associated with every signal on the basis of the values read by the reading device.

Abstract: A blocking device for a door of an electric household appliance in which a plate sliding on a support is selectively blocked in use in a engaging position with a striker of the door by a pawl selectively mobile between an extracted position and a retracted position from/into a sliding seat thereof, in which positions the pawl respectively engages/does not engage a perforation of the plate; wherein the pawl is selectively blocked in an extracted position by means of an electromagnet having a winding and a core mobile along the axis of the winding and operatively associated to a mobile slide parallel to the axis of the winding between a first and a second limit stop position, only in the first of which a protrusion of the slide cooperates with the pawl; a retaining device of push-push type being operatively associated on one side to the slide and on the opposite side to a pre-loaded spring sandwiched between the retaining device and a shoulder fixed in use to the support; the push-push device being configured t

Abstract: A mechanism for locking a door of an electric household appliance is improved in that a slider jaw is hinged to a body of a slider in such manner that, by its tooth, it snaps or releases a head of a latch and that the slider jaw is provided with an opening finger, and a mechanism housing is provided with a hindering element, which thrusts the opening finger of the slider jaw, when the slider moves in direction of the force of the spring, so that the slider jaw gets open. The slider body and the slider jaw are preferably made of different materials: the slider body of a polyoxymethylene copolymer and the slider jaw of a polyamide or of a ZL4 alloy having a composition Zn:A14:Cu1. The proposed mechanism is not susceptible to plastic deformation of the junction area between the slider body and the slider jaw.

Abstract: A fast-fit device for fluidically connecting a pressure sensor to a water collecting tank of an electric household appliance including: a supporting body securable to a housing of the electric household appliance and carrying a first, blind tubular element, having a first open end, opposite to a second blind end; a second tubular element integrally obtained in one piece with a casing of the pressure sensor, which overhangingly extends therefrom for the entire length thereof and which displays external diameter and length smaller than the internal diameter and length of the first tubular element; a closing plug of the first end provided with a through hole which fluid-tightly receives in use the second tubular element; and first and second fastening means which are reciprocally complementary and integrally carried by the supporting body and the casing of the sensor, respectively.

Abstract: A system for detecting the operative parameters of a household appliance, such as a washing machine or dryer, provided with a relatively mobile component with respect to a load-bearing frame (tank or basket), including a pressure switch including in turn a rigid casing accommodating a deformable membrane sensitive to hydraulic pressure, a ferromagnetic material core engaged to the membrane and a winding fixed to the casing and operatively coupled with the core to form a variable inductance electrical inductor; in which the pressure switch is coupled to the relatively mobile member to follow its movements; and in which said variable inductance electrical inductor is operatively associated to a ferromagnetic material bracket integrally carried by the load-bearing body and arranged outside the pressure switch.

Abstract: A safety lock for a door of a household appliance, preferably of a washing machine, includes a housing on one end of which there is a mechanical assembly of the door lock, on the other end there is an assembly of the electric switch used to reach closed or interrupted electric circuit, into which also a part of a programme selection switch is included, whereby the assembly of the door lock and the assembly of the electric switch are mutually linked by a slider, which is designed in a way that its lug engages with the hook of the appliance door, when the hook is in the guide, so that upon manual closing of the appliance door the hook pushes the slider towards the assembly when entering the guide.

Abstract: A mechanism for locking a door of an electric household appliance is improved in that a slider jaw is hinged to a body of a slider in such manner that, by its tooth, it snaps or releases a head of a latch and that the slider jaw is provided with an opening finger, and a mechanism housing is provided with a hindering element, which thrusts the opening finger of the slider jaw, when the slider moves in direction of the force of the spring, so that the slider jaw gets open. The slider body and the slider jaw are preferably made of different materials: the slider body of a polyoxymethylene copolymer and the slider jaw of a polyamide or of a ZL4 alloy having a composition Zn:A14:Cu1. The proposed mechanism is not susceptible to plastic deformation of the junction area between the slider body and the slider jaw.

Abstract: A pressure sensor including a body, device for receiving pressure associable with a tube connected to a fluid-filled tank of an electric household appliance, wherein the level of the fluid is to be measured. It further includes a device for emitting electric frequency signal proportional to the pressure received; a device carried aboard the body, on which a plurality of response frequency values emitted by the emitting means associated with corresponding pressure values at the pressure receiving means, were recorded. The pressure sensor is used with a pressure reading system carried by the device for receiving pressure. The pressure reading system includes two devices for reading values recorded on the pressure sensor, i.e. pressure and frequency values; and electric frequency signals. The pressure reading system further includes a processing device for interpolating the pressure value associated with every signal on the basis of the values read by the reading device.

Abstract: A blocking device for a door of an electric household appliance in which a plate sliding on a support is selectively blocked in use in a engaging position with a striker of the door by a pawl selectively mobile between an extracted position and a retracted position from/into a sliding seat thereof, in which positions the pawl respectively engages/does not engage a perforation of the plate; wherein the pawl is selectively blocked in an extracted position by means of an electromagnet having a winding and a core mobile along the axis of the winding and operatively associated to a mobile slide parallel to the axis of the winding between a first and a second limit stop position, only in the first of which a protrusion of the slide cooperates with the pawl; a retaining device of push-push type being operatively associated on one side to the slide and on the opposite side to a pre-loaded spring sandwiched between the retaining device and a shoulder fixed in use to the support; the push-push device being configured t

Abstract: An analogue position transducer, usable for example as a pressure switch in a household appliance, includes a rigid casing accommodating a deformable membrane sensitive to hydraulic pressure, a first element engaged to the membrane so as to be mobile along with at least one portion of membrane in a predetermined direction (A), and a second element fixed to the casing and operatively coupled with the first element to provide a signal variable according to the relative position of the first element with respect to the second element. Between the first element and a portion of the membrane, an element is interposed for varying, along the predetermined direction, the relative position of the first element with respect to the portion of the membrane. The transducer also includes a spring fitted and preloaded between the casing and the membrane, and a further element for adjusting the preload of the spring.

Abstract: A position transducer of water level in a machine basin, preferably in a drum-type washing machine or a dishwasher and the like, transforms information relating to the water level in the flood basin of the machine into an electric signal to activate an execution organ. The circuit realizing the transformation is an embedded contact lamella provided with electronic members. Integrally with the step of embedding, a snap arrangement is prepared for engaging and retaining a connector connected to the circuit.

Abstract: A system for detecting the operative parameters of a household appliance, such as a washing machine or dryer, provided with a relatively mobile component with respect to a load-bearing frame (tank or basket), including a pressure switch including in turn a rigid casing accommodating a deformable membrane sensitive to hydraulic pressure, a ferromagnetic material core engaged to the membrane and a winding fixed to the casing and operatively coupled with the core to form a variable inductance electrical inductor; in which the pressure switch is coupled to the relatively mobile member to follow its movements; and in which said variable inductance electrical inductor is operatively associated to a ferromagnetic material bracket integrally carried by the load-bearing body and arranged outside the pressure switch.

Abstract: A position transducer of water level in a machine basin, preferably in a drum-type washing machine or a dishwasher and the like, transforms information relating to the water level in the flood basin of the machine into an electric signal to activate an execution organ. The circuit realizing the transformation is an embedded contact lamella provided with electronic members. Integrally with the step of embedding, a snap arrangement is prepared for engaging and retaining a connector connected to the circuit.