A heated blanket is presented that includes a self-regulating heating element contained therein for uniform heating of the heated blanket.

A co-continuous mouldable polymeric composite with PTC effect has a matrix that comprises at least two immiscible polymers (HDPE, POM), and an electrically conductive filler (CB) in the matrix. At least one of said immiscible polymers is high-density polyethylene (HDPE), and at least one other of said immiscible polymers is polyoxymethylene (POM).

A PTC heating device for introduction into a receiving pocket of an electric heating device includes at least one PTC element, a conductor track that is electrically connected to the PTC element, and insulating layers that are abutted in a thermally conductive manner against the PTC element. A frame-shaped casing joins the at least one PTC element, the conductor track, and the insulating layers as a unit. The frame-shaped casing has a leading frame member with elastic guide tabs which, in an initial assembly state, project on oppositely disposed sides of the frame-shaped casing over the heat-emitting open surface respectively associated with them, which are inclined obliquely from the leading frame member in a direction of the open surface, and which are elastically pivotable. During heating device assembly, the PTC heating device is centered and guided by the elastic guide tabs when introduced into a heating rib of a heating chamber.

A PTC heating element for a PTC heating module for a vehicle is disclosed. The PTC heating element includes a PTC thermistor having two main surface that, in a thickness direction of the PTC thermistor, are located opposite one another and spaced apart from one another. Two electrically conductive contact layers are applied to the two main surfaces of the PTC thermistor. A total quotient between a total geometrical area of the two contact layers and a total geometrical area of the two main surfaces is substantially below 1 and substantially above 0, e.g., between 0.05 and 0.85.

A system for heating electro-optic media comprises an electro-optic device comprising: a first substrate having first and second surfaces; a second substrate having third and fourth surfaces; a chamber defined between the opposed third surface of the second substrate and the second surface of the first substrate; electro-optic medium in chamber; a first electrode associated with second surface of first substrate; and a second electrode associated with third surface of second substrate; and a circuit in communication with first and second electrodes, comprising: a first EMF source capable of producing a first voltage; a second EMF source capable of producing a second voltage different from the first voltage; a plurality of switches configured to control the application of first and second voltages to the first and second electrodes; and a controller configured to control the switches, the first EMF source, and the second EMF source.

A heating cable installation includes a heating cable having a first metallic conductor and at least a second metallic conductor, spaced from and extending substantially parallel to the first metallic conductor. A PTC (positive temperature coefficient) matrix is electrically coupled about the first and second metallic conductors. A compressible insulator is disposed about the PTC matrix, the compressible insulator being compressible to allow thermal expansion of the PTC matrix. A rigid, outer encasement material prevents outward expansion of the heating cable.

An additive manufacturing apparatus makes it unnecessary to use a heater power supply, and makes it possible to attempt to reduce the cost, by effectively using an electron beam, includes: a conductive stage in a vacuum chamber; a conductive base plate on a top side of the stage; a metal-material supply device that supplies a metal material onto a top side of the base plate; an electron beam gun that irradiates, with an electron beam, the metal material supplied by the metal-material supply device, and melts and solidifies the metal material; a grounding circuit that grounds the stage and the base plate; and a controller that controls the metal-material supply device and the electron beam gun. The additive manufacturing apparatus includes a resistance heating element that is arranged between the stage and the base plate, and generates heat by a current produced by electron-beam emission from the electron beam gun.

A PTC heating element and an electric heating device containing such a PTC heating element are disclosed. The PTC heating element comprises two insulating layers with a metallic coating provided on one side and a PTC element arranged therebetween which is provided on oppositely disposed main side surfaces with a respective metallization which is electrically conductively connected to the coating of one of the insulating layers. The metallization provided on one of the main side surfaces is assigned only to one potential for energizing the PTC element. The metallization provided on the other main side surface is assigned to only the other potential for energizing the PTC element. The metallization of the one main side surface of the PTC element and the metallization of the other main side surface of the PTC element are formed in such a way that the current path (P) through the PTC element is extended relative to the thickness (D) of the PTC element.

A PTC heating element has two insulating layers with a metallic coating provided on one side and a PTC element arranged therebetween. The PTC element is provided on oppositely disposed main side surfaces with a respective metallization which is electrically conductively connected to the coating of one of the insulating layers The metallization provided on one of the main side surfaces is assigned only to one potential for energizing the PTC element, and the metallization provided on the other of the main side surfaces is only assigned to the other potential for energizing the PTC element, as well as an electric heating device containing such a PTC heating element. With regard to better heat decoupling, the insulating layer may be glued to the PTC element, and the coating of the insulating layers is in direct electrically conductive contact with the metallization of the PTC element.

A method of forming a plurality of individual heating cables sets includes creating at least a portion of a master cable set by coupling alternating sections of cold and hot cable section, each section of cold cable section having a length twice a model cold cable section length and each section of hot cable section having a length twice a model hot cable section length. A continuous metallic ground sheath is applied about substantially all of the master cable set and a continuous outer jacket is applied about the continuous metallic ground sheath. The master cable set is segmented at defined locations to create a plurality of individual heating cable sets having an overall length of the model hot cable section length plus the model cold cable section length.