A heater panel includes a core. A heater/dielectric layer including a positive thermal coefficient (PTC) heater layer between a pair of dielectric layers is bonded to the core in a stack. An impact layer is bonded to the stack, wherein the impact layer includes a first sub-layer for impact absorption that is bonded to the stack and a second sub-layer for cut resistance bonded to the first sub-layer. The second sub-layer has a higher material hardness than that of the first-sub layer.

An article comprising a double-switching heater that comprises a double-switching PTC ink deposited on a flexible substrate to form one or more resistors. The double-switching PTC ink comprises a first resin and a second resin; the first resin provides a first PTC effect within a first temperature range (T1, T2); the second resin provides a second PTC effect within a second temperature range (T3, T4), where T3≥T2; the first resin has an NTC effect above the first temperature range; the second PTC effect is greater than the first PTC effect; and the second PTC effect overlaps with, and is greater than, the NTC effect of the first resin. The substrate can be either thermal polyurethane, nylon or a polyester blend.

A suspension mounted heating system is designed to allow easy installation of electric heating cable that is positioned against the bottom surface of a suspended stair or walkway so that heat generated by the cable is efficiently transferred up into the stair or walkway material to raise its temperature enough to prevent the accumulation of snow and ice on the material's top surface.

An electrical connection assembly includes a cable having a conductor, a metallic textile in electrical contact with the conductor, and a crimp element creating a pressure between the conductor and the metallic textile.

A heater panel includes a face layer. A heater/dielectric layer includes a heater layer between a pair of dielectric layers. The face layer is bonded to a first one of the dielectric layers. A ballistic structure is bonded to a second one of the dielectric layers. The face layer can be bonded directly to the first one of the dielectric layers with a film adhesive. The ballistic structure can be bonded directly to the second one of the dielectric layers with a film adhesive. The ballistic structure can be configured to withstand at least a 5.56 mm bullet impact.

In order to control the temperature of a covering, the process of laying a heating line under the individual covering elements is known. However, this leads to various disadvantages. A functional body for a covering is provided which can be temperature-controlled, has an increased stability and is inexpensive to produce. This is achieved in that a bottom side of the functional body can be deposited on a substrate and a top side thereof can be joined together with the covering. The covering may for example be a floor covering, but may also be a wall covering or a cover element, in particular a tile, a glazed tile, a panel or the like for applications for indoor and outdoor regions. A temperature-control means is arranged on or in the top side of the functional body.

A heated floor panel may comprise a base assembly and a heating element located on a first surface of the base assembly. A panel skin may be located over the heating element and the first surface of the base assembly. The panel skin may extend from the first surface of the base assembly to a second surface of the base assembly opposite the first surface of the base assembly.

A composite panel suitable for heating an environment includes a face sheet having a 3D woven structure and abutting the environment, and a first core layer positioned on a side of the face sheet opposite the environment. The 3D woven structure includes at least one z-fiber extending in a first direction, the first direction representing a thickness of the face sheet. The woven structure further includes a plurality of weft layers, each having a weft fiber extending in a second direction, and a warp layer disposed between the plurality of weft layers, the warp layer having a warp fiber extending in a third direction. The z-fiber extends along the plurality of weft layers across a full extent of the 3d woven structure in the first direction.

Provided is a far-infrared ray radiation sheet capable of realizing a heating device exhibiting reduced heat unevenness and a high heat diffusion property, that is highly effective as a heater and good for a human body. There is provided a far-infrared ray radiation sheet 1 formed in a planar shape, that radiates far-infrared rays, the far-infrared ray radiation sheet comprising heat generation type mixed paper 20 formed by mixing a basic material and carbon fiber; electrodes 21 provided to the heat generation type mixed paper 20; heat diffusion type mixed paper 10 formed by mixing the basic material, and the carbon fiber or graphite exhibiting high heat conductivity, that is laminated on the heat generation type mixed paper 20; and prepregs and PET films 23 are laminated on the heat generation type mixed paper 20 and the heat diffusion type mixed paper 10, wherein the far-infrared rays are radiated by applying current to the electrodes 21.

Methods, systems and devices for making a pedestrian, vehicular, or other surface resistant to frost, snow and ice by use of heat are disclosed. A composite base or deck element includes a recess to accommodate heating element. A thermal insulator has an upward facing layer of heat-conductive aluminum foil, above which sits the heating element. On top is a pedestrian, vehicular, or other exposed surface, for example a tactile warning surface.