A PTC heating element for an electric heating device includes frame which is made of electrically non-conductive material and which encloses at least one PTC element, conductor tracks electrically connected to the PTC element, and insulating layers bearing, in a heat-conductive manner, against an oppositely disposed main side surface of the PTC element. The frame has contact strips which project over itself and which are electrically conductively connected to the conductor tracks for energizing the PTC element with different polarities. In order to provide an electrically well-insulated PTC heating element allows good heat coupling, s a film respectively covers the outer surfaces of the insulating layers. A corresponding PTC heating element may be provided in a circulation chamber of the electric heating device. In this case, the conductor tracks are electrically connected to the PTC element, protrude through a partition wall of the electric heating device, and are exposed and electrically connected in a connection chamber. The connection chamber is separated by the partition wall from the circulation chamber.

A thick film high temperature thermoplastic insulated resistive heating element including one or more base dielectric layers screen printed on a metal substrate having a composition one or more melt-flowable thermoplastic polymers, inorganic filler particles, a transition dielectric layer on top of the uppermost based dielectric layer containing inorganic additives in addition to one or more melt-flowable thermoplastic polymers and inorganic filler particles. A heater layer is coated on top of the top dielectric layer where the topmost dielectric layer acts as a transition layer between the uppermost dielectric to protect the adjacent resistor layer from the development of hot spots and cracking arising from the propagation of microcracks due to, amongst other things, residual stresses transmitted to the resistive layer from the sub-layers due to the thermal history of the resistive heater and substrate. The topmost transition dielectric layer is comprised of a ternary or higher mixture of the thermoplastic material such as, but not limited to, polyether ether ketone (PEEK), the inorganic filler such as alumina and other additives such as aluminum nitride.

A method for creating an electric heating source, including a body equipped with one or more housings containing mineral-insulated heating cables. The housings communicate with one or more reservoirs which accept a purely metallic solder material in solid, powder or sheet form. The device is heated in a vacuum degassing plateau, followed by a casting plateau during which the solder melts and fills the housing around the heating cables, resulting in full metal contact between the cables and the body, providing a more uniform temperature and a shorter response time to heating or cooling. Also, a heating source obtained in this manner, including an infrared faired source or an immersion heater for the heating of a liquid bath of molten metal.

A method for creating an electric heating source, including a body equipped with one or more housings containing mineral-insulated heating cables. The housings communicate with one or more reservoirs which accept a purely metallic solder material in solid, powder or sheet form. The device is heated in a vacuum degassing plateau, followed by a casting plateau during which the solder melts and fills the housing around the heating cables, resulting in full metal contact between the cables and the body, providing a more uniform temperature and a shorter response time to heating or cooling. Also, a heating source obtained in this manner, including an infrared faired source or an immersion heater for the heating of a liquid bath of molten metal.

The present invention relates to a ceramic heater. The ceramic heater of the present invention comprises: a heater plate in which a heating element is disposed and which is made of a ceramic material; a shaft which has a tubular shape with a through-hole and is coupled to the bottom surface of the heater plate and in which a rod for supplying power to the heating element through the through-hole is received; and a continuous or discontinuous air pocket which is provided in a joint with which the heater plate and the shaft come into contact and by which the heater plate and the shaft are coupled to each other, wherein the air pocket is formed along the joining surface of the joint.

A heater assembly having a laminate heater plate and a shaft. The laminate heater plate is formed from a plurality of layers, wherein one or more layers may comprise one or more of a heating element, an RF electrode, a cooling channel, and an RTD sensor.

A heating assembly includes an atomizing base and a resistive heating element at least partially embedded in the atomizing base. The resistive heating element includes a heating fence, two connecting portions and two conductive pins arranged along a length direction of the resistive heating element. The heating fence is located in a middle of the resistive heating element. The two connecting portions are respectively located on two opposite sides of the heating fence and are interconnected by the heating fence. The two conductive pins are located at two opposite ends of the resistive heating element and are connected with the two connecting portions respectively. The atomizing base includes a base plate and a side wall extending from a periphery of the base plate. A receiving cavity is formed in the atomizing base. An atomizing opening penetrates through the base plate. The atomizing opening is aligned with the heating fence.

A heating assembly includes an atomizing base and a resistive heating element at least partially embedded in the atomizing base. The resistive heating element includes a heating fence, two connecting portions and two conductive pins arranged along a length direction of the resistive heating element. The heating fence is located in a middle of the resistive heating element. The two connecting portions are respectively located on two opposite sides of the heating fence and are interconnected by the heating fence. The two conductive pins are located at two opposite ends of the resistive heating element and are connected with the two connecting portions respectively. The atomizing base includes a base plate and a side wall extending from a periphery of the base plate. A receiving cavity is formed in the atomizing base. An atomizing opening penetrates through the base plate. The atomizing opening is aligned with the heating fence.

A wafer placement table includes a ceramic plate, an electrode embedded in the ceramic plate, a hollow ceramic shaft attached to a surface of the ceramic plate, a power-supplying member running inside the ceramic shaft and connected to a terminal of the electrode, a plate-side attaching site defined on the ceramic plate and to which the power-supplying member is attached, and a power-source-side attaching site defined at a free end of the ceramic shaft and to which the power-supplying member is attached. The power-source-side attaching site is defined in correspondence with the plate-side attaching site and in such a manner as to be shifted from the plate-side attaching site in plan view. The power-supplying member includes a redirecting portion where the power-supplying member extending from the power-source-side attaching site is forcibly redirected toward the plate-side attaching site.

Various components and methods related to a leading edge assembly are disclosed. The leading edge assembly can include an outer strike shell and a foam core. The foam core can be located inside the outer strike shell. The leading edge assembly can include a heating element with a plurality of sensors and wires. A method of manufacturing a leading edge assembly can include forming a composite layer, applying a metallic layer to the composite layer, installing an electronic device, and inserting a foam core into a cavity bounded by the composite layer and/or the electronic device.