Abstract: An electric heater (1, 1?) for heating a substance inside a tank (100), the electric heater (1, 1?) comprising: —at least one resistive wire (4) adapted to be connected to a source of electricity, said at least one resistive wire (4) being provided with a sheath (41) made of electrically insulating material; —at least a first thermally conductive sheet (5) made of metal fixed to the at least one resistive wire (4); —at least two protective layers (2, 3) made of polymer material, fixed to each other; wherein the at least one resistive wire (4) and the at least a first sheet (5) are arranged between the at least two protective layers (2, 3).

Abstract: A process for molding one or more bottle preforms, wherein molten plastic is injected into at least one molding cavity; and wherein air is drawn from the at least one molding cavity, through at least one channel for the air to pass from the at least one molding cavity towards the outside of the molding device, by means of suction means; and apparatus and device for performing such a process.

Abstract: An electric heater (1) for a machine for preparing hot beverages, comprising —a metal body (2); —at least one electric heating element (3, 4), in particular adapted to generate heat when it is crossed by an electric current, arranged in the metal body (2); —a tube (5) for the passage of a liquid to be heated, arranged in the metal body (2); wherein an inner surface (6) of said tube (5) has a surface roughness (Ra) which is greater than 0.8 ?m, preferably greater than, or equal to 1 ?m.

Abstract: An electric heater including a metal body, in which a first pipe and a second pipe are provided in the metal body. The first pipe and second pipe are mutually distinct so as to be crossed by two distinct flows of fluid to be heated. A first heating stretch, a second heating stretch and a third heating stretch are arranged in the metal body. The first pipe and the second pipe are arranged between the first heating stretch and the second heating stretch. The third heating stretch is proximal to the second pipe and distal from the first pipe. The second pipe is arranged between the first pipe and the third heating stretch.

Abstract: A flexible resistor including a support made of electrically insulating material; at least one track made of an electrically conductive material incorporated in the support, and configured to be connected to an electric energy source; a foil made of electrically conductive material, having a surface fixed to a first face of the support, and a plurality of wings defined by foil portions cut and folded transversally to the surface.

Abstract: An induction heater for a cook top comprising: —a first electrically insulating sheet (1); —a second electrically insulating sheet (2); —one or more inductors (5) arranged on a same plane between the first sheet (1) and the second sheet (2), each inductor (5) comprising a single electrically conductive track defining a flat spiral coil provided with a plurality of turns (15); wherein the thickness (t) of each inductor (5) is comprised between 100 and 500 ?m; and wherein the ratio between the distance (g) between the consecutive turns (15) of each inductor (5) and the thickness (t) of each inductor (5) is lower than or equal to 1.5.

Abstract: A cover for a pump for a liquid for a household appliance, in particular for a dishwasher or a washing machine; the cover comprising an electric heating element partially in contact with the wall, which crosses said wall, whereby said at least one electric heating element is apt to come into contact with the liquid; the cover further comprising at least two NTC thermistors which are fixed to the outer face by a support provided with a notch; wherein the two NTC thermistors are at a stretch of heating element separated by the wall, and are fixed to zones of the support between which said notch is provided.

Abstract: A heating and capacitive sensing device for a steering wheel of a motor vehicle. The device includes a support made from an electrically insulating flexible material to which at least an electrically conductive first track and at least an electrically conductive second track are fixed. An electronic control unit including a capacitance reading module is electrically connected to the at least one second track. The electronic control unit is configured to control the at least one first track and at least one second track, so that the at least one first track is suited to generate heat for heating the steering wheel, and at least one second track is configured to operate as a capacitive sensor means by sending capacitance values to the electronic control unit.

Abstract: The present invention relates to a method and device for measuring the temperature in power resistors based on the measurement of the high-frequency circuit parameters of said resistor. The present invention excludes the use of thermocouples, dedicated temperature sensors or thermo chambers.

Abstract: An induction heater for a device for heating tobacco or aromatic herbs, in particular of the heat-not-burn type. The induction heater includes at least one inductor having at least one electrically insulating layer and at least one electrically conductive track fixed to the at least one electrically insulating layer. The at least one inductor is adapted to be arranged about a metal tube in which part of a cigarette can be inserted, and the metal tube is adapted to be heated by induction by the at least one inductor.

Abstract: An electric heater for heating a liquid or frozen substance in a motor vehicle. In particular, an electric heater for heating electric car batteries or an HVAC system or for a system for reducing the environmental pollution of the motor vehicle. The electric heater includes a metal sheet adapted to generate heat when it is crossed by an electric current. two polymeric layers between which the metal sheet is arranged, and two metal layers, between which the two polymeric layers are arranged. The two metal layers are hermetically sealed to each other defining a casing, which prevents the substance to be heated from coming into contact with the two polymeric layers and with the metal sheet. A plurality of metal flaps extend transversely from an external face of at least one metal layer of the two metal layers.

Abstract: An electric heater for heating a substance, in particular for a tank for a system for reducing the environmental pollution of a motor vehicle; the electric heater comprising a metal sheet adapted to generate heat when it is crossed by an electric current; two polymeric layers between which the metal sheet is arranged; at least one PTC layer, having a positive temperature coefficient, which at least partially coats the metal sheet; wherein the two polymeric layers are hermetically sealed to each other, defining a casing which prevents the substance to be heated from coming into contact with the metal sheet; wherein said at least one PTC layer has a thickness from 5 to 50 ?m; wherein said metal sheet is in contact, in particular directly in contact, with both the polymeric layers.

Abstract: A method and device for detecting the amount of limescale that accumulates in liquid heating devices, in particular for heating water. The method is capable of establishing, through simple temperature measurements, if the amount of limescale deposited on the heater element of a device for heating liquids is such as to jeopardize the correct operation thereof and provides the user with information on the need to clean the aforesaid heater.

Abstract: A floor panel (100) for transport means, in particular for trains, ships or boats, the floor panel (100) comprising a metal plate (1); at least one heating cable (2, 3) adapted to generate heat when it is crossed by electric current; a net (4) provided with a plurality of meshes (41); wherein said at least one heating cable (2, 3) is arranged between the net (4) and the metal plate (1). wherein said at least one heating cable (2, 3) is in contact with the metal plate (1).

Abstract: An electric heater (1) comprising:—at least one armored tubular cartridge (2) comprising at least one PTC resistor (3) therein; —a block of aluminum (4), or alloys thereof, overmolded by die-casting around said at least one armored tubular cartridge (2); wherein a coating layer in plastic material (5) is provided, applied around said block of aluminum (4).

Abstract: An induction heater for a cooking surface, the induction heater comprising an electrically insulating layer; at least one inductor defining a winding, adapted, at least, to heat at least one cooking utensil; at least one sensor adapted, at least, to detect whether said at least one cooking utensil is placed above the cooking surface; at least one magnetic flux concentrator; wherein said at least one inductor and said at least one sensor are arranged on said electrically insulating layer; wherein said layer is interposed between said at least one inductor and said at least one magnetic flux concentrator.

Abstract: Device (100) for a system for detecting a contact between a user and a steering wheel (9) of a vehicle, and for heating the steering wheel (9). The device includes an electrically insulating support (10); a first track (1) for heating the steering wheel (9), a second track (2) for detecting the contact, and a third track (3) for avoiding the detection of false contacts. The first track (1), the second track (2) and the third track (3) are electrically conductive, distinct from one another and arranged on the same surface of the electrically insulating support (10), wherein the third track (3) is arranged between the first track (1) and the second track (2).

Abstract: A device (100, 200?, 200?, 300, 400) for detecting the contact between a user and a steering wheel (9) of a vehicle, the device (100, 200?, 200?, 300, 400) comprising: an electrically insulating support (10); a first electrically conductive track (101, 201, 301, 401) fastened to the support (10) and comprising a plurality of first peaks (11) alternated with a plurality of first troughs (12) along a direction (D), wherein the first track (101, 201, 301, 401) is distributed over the support so that the surface of the first track (101, 201, 301, 401) adapted to come into contact with a user's hand decreases along said direction (D).

Abstract: An induction hob includes a main body with an upper main surface on which in use at least one pan to be heated can be placed, and a lower main surface. The induction hob also includes at least one inductor coupled to the main body at the lower main surface, and a flexible body, fixed to the lower main surface. The flexible body has alternating first, electrically insulating layers and second layers each including at least one electrically conductive track. The inductor has a plurality of such electrically conductive tracks, which are positioned at different second layers and are electrically connected to each other in series and/or parallel to form a plurality of loops.

Abstract: An electric heater (1), in particular for heating, in particular thawing, an aqueous solution comprising urea inside a tank (100) to save fuel and abate pollution of a motor vehicle, the electric heater (1) comprising—a thermally conductive body (20), provided with a wall (23) which at least partially extends about an axis (Z), comprising two opposite faces (21, 22); a plurality of fins (24, 25) which extend transversally from at least a first face (21) of said two faces (21, 22); at least one heating element (40), adapted to be connected to a source of electricity to generate heat, comprising a stretch (41) arranged inside the wall (23), which extends along the wall (23), whereby the heat generated by the at least one heating element (40) can be transmitted to the body (20) and to the substance to be heated.