A heater cable, which may particularly be a self-regulating heater cable, has a heating element including two bus wires spaced a distance apart by a positive temperature coefficient (PTC) material, giving the heating element a major axis and a minor axis. Bending the heater cable transverse to the major axis gives a tighter bend radius than bending the heater cable transverse to the minor axis. To facilitate bending in multiple directions, the heating element is twisted around the longitudinal axis of the heater cable. The twisting may be done uniformly to give the bus wires a helical configuration, which reduces electromagnetic interference and facilitates heater cable diameters as small as 0.25 inches. Additional layers, such as polymer jackets and a braided metal ground plane layer, may be added over the heating element. Each of these layers may be twisted or untwisted in various implementations.

An electric heating pad with electrosurgical grounding comprising a heated underbody support, heated mattress or heated mattress overlay. In an illustrative embodiment the heating pad with electrosurgical grounding may include a flexible sheet-like heating element including an upper edge, a lower edge, and at least two side edges and a flexible sheet-like grounding electrode including an upper edge, a lower edge, and at least two side edges. A shell covering the heating element and grounding electrode and comprising at least two sheets (e.g., may be one sheet of material folded over to form two sheets) of flexible material, and a weld coupling the two sheets of flexible material together about the edges of the heating element and grounding electrode, wherein the weld is one of a RF weld, ultrasonic weld, or a heat bond, wherein the two sheets comprise PVC or urethane.

An article comprising a heater that comprises a high-resistance magnification (HRM) PTC ink deposited on a flexible substrate to form one or more resistors. The HRM PTC ink has a resistance magnification of at least 20 in a temperature range of at least 20 degrees Celsius above a switching temperature of the ink, the resistance magnification being defined as a ratio between a resistance of the double-resin ink at a temperature ‘T’ and a resistance of the double-resin ink at 25 degrees Celsius.

The present device has at least two chambers for receiving vaporizable components, two heating elements, and circuitry to control heater behavior.

The invention proposes a heating element (30) incorporating an electric heating circuit for a windscreen wiper blade on a motor vehicle, comprising at least one resistive heating element (36) which is connected to the electric power supply terminals (40) of said heating element, characterized in that at least one resistive heating element is a PTC resistive heating element (36), formed by the application of a resistive ink with a positive temperature coefficient.

The present invention relates to a positive temperature coefficient composition comprising a semi-crystalline material, at least one binder, from 0.5 to 9.5% by weight of an electronically conductive material and a solvent. Furthermore, the present invention relates to use of a positive temperature coefficient composition according to the present invention in heating elements and sensors. A positive temperature coefficient composition according to the present invention provides low and stable resistance till self-regulating temperature, which allows fast heating of the heating element. Furthermore, the positive temperature coefficient composition according to the present invention has high PTC ration and therefore, has higher safety and more power can be applied to the heating element.

An electrical heating device (14) for an operating fluid tank (10) of a motor vehicle, in particular for a tank (10) for storing aqueous urea solution, having at least one PTC element (34, 36, 38, 40, 42, 44), that is disposed connecting two electrical conductors (24, 26, 28, 29), characterized in that the electrical heating device (14) comprises a multitude of PTC elements (34, 36, 28, 40, 42, 44), of which each is connectively arranged to two electrical conductors (24, 26, 28, 29), wherein at least one of the electrical conductors (24, 26, 28, 29) is configured as a laminar conductor component and forms a heat conductor for transferring the heat produced in the PTC element (34, 36, 38, 40, 42, 44) to a volume portion of the outside environment (18) of the electrical heating device (14), which is adjacent to the electrical heating device (14).

A cartridge for an aerosol-generating system is provided, including a liquid storage portion including a housing containing a liquid aerosol-forming substrate, the housing having an open end; and a heater assembly including: an electrical heating element configured to heat the substrate to form an aerosol, the heating element including a planar filament arrangement having one or more electrically conductive filaments, an electrically insulating substrate having a planar attachment face, the filament arrangement disposed on the planar attachment face, and connectors arranged at opposite ends of the heating element and forming two separate electrical contacts configured to apply power to the filament arrangement, at least a portion of the heater assembly is fluid-permeable, and the heater assembly is arranged over the open end of the housing.

An electric heating member, in particular for automotive application, includes an electrically conductive, flat-shaped textile member of uniform thickness and a layer of flexible, polymeric plastic material that is adhesively bonded to a surface of the textile member. The electrically conductive textile member is formed by at least two electrically conductive textile member parts that are arranged side by side and are electrically separated. At least one of the at least two textile member parts is electrically connected to electric terminals that are connectable to an electric heater power supply unit. The electric heating member is particularly intended to be used for heating a vehicle steering wheel.

An article comprising a heater that comprises a high-resistance magnification (HRM) PTC ink deposited on a flexible substrate to form one or more resistors. The HRM PTC ink has a resistance magnification of at least 20 in a temperature range of at least 20 degrees Celsius above a switching temperature of the ink, the resistance magnification being defined as a ratio between a resistance of the double-resin ink at a temperature ‘T’ and a resistance of the double-resin ink at 25 degrees Celsius.