Abstract: A webbing reinforced by carbon fibers is heated during its resin impregnation by passing an electric current through the carbon fibers whereby the carbon fibers act directly as heating mats in a system of layers of fiber reinforced material. Thus, the use of heated molds has been obviated which is of particular advantage especially for large scale structural components, especially if such components have a complicated configuration.

Abstract: An electrical cable having a shielding comprised of knit or knit-graded wire having metal coatings.

Abstract: A warming room whose flexible, electric blanket-like wall or walls, floor and ceiling generate surface heat to provide uniform warmth in the area which they enclose. Portions of the warming room comprise one or more warming walls or barriers to increase the temperature of an indoor area and enhance the comfort of its occupants. Using the invention, people lower thermostat settings in portions of rooms, offices or other buildings which are not occupied while they occupy the warmer area within the warming room or adjacent to a warming barrier or enclosure made of warming barriers.

Abstract: This fastener used in induction heating is a wire screen basically of an eddy-current carrying material such as carbon steel. Selected wires in the screen are copper, sheathed in an insulating material. The screen is placed between two sheets of thermoplastics. When inductively heated, the composite softens and flows around the apertures of the screen. After this heating and joining, the copper wires may be used to conduct electricity.

Abstract: The invention relates to a heating element for a heated chair which can be used as a covering material for the heated chair or which can be laid under the covering material or which can be draped over an ordinary chair to convert it to a heated chair. In accordance with the invention, the heating element has a glass fibre fabric layer made of intermixed glass fibre strands. An electrical resistance wire which consists of a core of glass fibre strands with a resistive wire wound around it, forms an undulating pattern in the glass fibre fabric layer, and top and bottom layers of thermoplastic material are heat fused or adhesively laminated to the glass fibre fabric layer. A metallic foil layer is applied to the side of the bottom layer which is remote from the glass fibre fabric layer. The heating element also includes a control for controlling the power delivered to the resistance wire. The said control is a simple dual proportional control which regulates the energy usage of the heating element.

Abstract: An open coil electric heater wherein the resistance conductor is supported on a frame. The resistance conductor in this instance, instead of being in the form of a single coiled wire, is composed of a plurality of strands of wire so as to reduce the cost of the resistance conductor while providing adequate surface area. The strands of fine wire or flat ribbon wire are braided into a rope which is formed into a series of reaches in customary manner. At least one of the strands is of a material which will provide strength to the wires that primarily generate the heat and thereby prevent sagging of such wires between wire supports. In a preferred form, the wires are loosely braided to form wide open spaces and insulated support members are projected through certain of the open spaces to support the strands in predetermined position.

Abstract: An electrical appliance for heating feeding-bottles, baby-food pots and containers of a similar type comprises a support and a heating element which is intended to come into contact with the container. The appliance further comprises a relatively flexible heating quilt which is fixed along a support handle, the quilt being intended to be wound and detachably fastened around the feeding-bottle or container to be heated.

Abstract: An electrically heatable floor covering comprising a carpet of woven fibers, wherein an electrical heating element is enclosed in the carpet body, which is made of a straight thin copper wire having a reinforcing coating of polytetrafluoroethylene which causes the wire to withstand impressions produced by footsteps and by heavy furniture without being broken.

Abstract: A building comprising a number of confined spaces, at least one of which being provided with an electric heating installation provided on, in or in front of at least part of the walls, floor, ceiling and/or windows, said electric heating installation consisting of singular layers comprising electrically conductive heating wires and electrically insulating wires.

Abstract: A pad comprising at least one sheet of material having a thermoplastic resinous composition and a heater actuable to heat and soften the sheet, the pad being for use in alignment of machine equipment, rails, beams, girders, or other constructional elements relative to a horizontal base, vertical or inclined line, or to other constructional elements. In use the pad is placed between the equipment, rail or the like and a support or abutment therefor, and the heater is actuated so as to soften the pad just sufficiently that the weight of object or a force thereon reduces the thickness of the pad an amount equal to the desired movement of the object necessary to achieve the desired alignment.