A power tool includes a handle assembly, a power supply, and a temperature control module; where the handle assembly includes a left grip and a right grip, where a first end of the left grip is coupled to a body of the power tool, a second end of the left grip is coupled to a first end of the right grip, and a second end of the right grip is coupled to the body of the power tool; the temperature control module is coupled to the handle assembly and the power supply separately; and the power supply is configured to power the temperature control module so that the temperature control module is configured to heat the handle assembly.

A heated composite structure and a method for forming a heated composite structure. The structure includes carbon fibers embedded within a thermoplastic matrix. The carbon fibers are connected with first and second electrodes that are configured to be connected with an electric source such that applying current to the electrodes causes current to flow through the embedded carbon fibers to provide resistive heating sufficient to heat the composite structure to impede formation of ice on the composite structure.

A unitary garment heating device that integrates with a garment to provide uniform heat throughout the garment. The device includes a plurality of nodes that position on various areas of the garment to distribute the heat. The nodes are fabricated from a conductive metallic yarn. A continuous conduit having no junctions carries current for generating heat, and connects the nodes to form a unitary heating device. The conduit is fabricated from the same material as the nodes, thereby forming a unitary device. The lack of junctions on the conduit helps eliminate problems such as shorts, and moisture exposure form rain or sweat. The conduit runs in a series circuitry to minimize shorts and arcing. The conduit is covered with a laminate and urethane to inhibit contact with moisture. A communication apparatus, such as a smart phone, monitors and regulates the temperature. A power supply and microprocessor are also attached.

A method for producing a heater with a co-sintered multilayer construction for a system for providing an inhalable aerosol, including providing at least one first substrate layer, arranging at least one first insulating layer at least in areas on the first substrate layer, arranging at least one heating element at least in areas on the first insulating layer, arranging at least one second substrate layer and at least one second insulating layer at least in areas on the heating element. The second insulating layer is arranged at least in areas on the second substrate layer, and the second insulating layer is in contact at least in areas with the heating element and/or with the first insulating layer. The method includes pressing the layers and the heating element, and firing the pressed layers in order to co-sinter the layers of the multilayer construction.

An electric heating mat may include an outer sleeve having an interior, and an access end with an opening to the interior. The access end may be folded upon itself into a closed condition, and unfolded into an opened condition. When the access end is closed, the interior of the outer sleeve may provide a sealed enclosure. The sealed enclosure may accommodate and protect internal components, such as heating elements, a power source, and associated controls. The heating elements, associated wiring, and an insulation layer may be provided in an inner sleeve, which may be insertable into the outer sleeve as a unit. When the access end is opened, the opening provides access to the internal components. Such access allows the power source to be turned on to supply power to the heating elements.

A heater element having an electrically insulating substrate, a buss layer made of a conductive material, and a resistive layer that includes a first patch of a first resistive material. The first buss layer has a first buss and a second buss extending from terminals of the heater element to a heating area of the heater element. The first resistive material is applied in a first selected location in the heating area so as to provide electrical communication between the first buss and the second buss and to enable an electrical current to flow through the first resistive material. The resistive layer includes a second patch of a second resistive material. The second patch is applied in a second selected location in the heating area so as to provide electrical communication between the first buss and the second buss, the second selected location being different from the first selected location.

A transparent pane is described, having an electrical heating layer extending at least over part of the pane surface and divided into a main heating region and an additional heating region electrically insulated therefrom. The transparent pane has connection means, which can be electrically connected to a voltage source and which has at least a first collecting conductor and a second collecting conductor. The collecting conductors are each electrically connected to the heating layer in the main heating region in direct contact such that upon application of a supply voltage, a heating current flows across a heating field formed by the heating layer. The transparent pane has at least one electrical line heating element, which is arranged, at least in sections, in the additional heating region of the heating layer.

An electric heater includes a substrate; and a first plane heating element disposed on one surface of the substrate, in which the first plane heating element includes a first track; a second track spaced apart from the first track; and a third track spaced apart from the second track. At least a portion of the second track is located between the first track and the third track, and the first track and the second track are connected by a first bridge, where the first bridge includes a first outer protrusion protruding toward the third track. The third track is formed with a curved portion which protrudes in an outward direction, and the first outer protrusion faces an inside of the curved portion in the outward direction and is spaced apart from the curved portion.

A crucible having a tubular inner surface is prepared. A source material is arranged so as to make contact with the inner surface, and a seed crystal is arranged in the crucible so as to face the source material. A silicon carbide single crystal grows on the seed crystal by sublimation of the source material. The inner surface is formed of a first region surrounding the source material and a second region other than the first region. In the growing a silicon carbide single crystal, an amount of heat per unit area in the first region is smaller than an amount of heat per unit area in the second region.

An apparatus includes a substrate, a first heating element, and a second heating element. The substrate includes a first portion, a second portion, and a third portion that is between the first portion and the second portion. The first portion is characterized by a first thermal conductivity, the second portion is characterized by a second thermal conductivity, and the third portion is characterized by a third thermal conductivity. The third thermal conductivity is less than the first thermal conductivity and the second thermal conductivity. The first heating element is coupled to the first portion of the substrate, and is configured to produce a first thermal output. The second heating element is coupled to the second portion of the substrate, and configured to produce a second thermal output. The second thermal output is different from the first thermal output.