Abstract: An electric tubular heater with a bent jacket tube made of strip material, an electric resistance heating element running in the jacket tube and an electrically insulating embedding material surrounding the resistance heating element. The jacket tube is formed into a closed cross-sectional configuration by deformation of the extremities of the strip material by either bending into an overlapping relationship or by folding the extremities over each other. The bending of the extremities is performed so as to compress the embedding material to its predetermined final density and final cross-sectional configuration according to preferred embodiments.

Abstract: A vaporizing and warming device for beverage-preparing machines, such as household coffee machines and the like of the type which include a hot plate for keeping the prepared beverage warm, a vaporizer tube carrying water for preparing the beverage and a heating element for transferring the heat required for the respective vaporization and warming processes. The heating element is thermally conductively connected with the vaporizer tube and is arranged together with the vaporizer tube at one side, preferably the underside of a horizontally extending hot plate. The heating element is arranged laterally offset with respect to the vaporizer tube and with its apex at a perpendicular distance from the hot plate which is smaller than the height of the vaporizer tube perpdendicularly to the hot plate, whereby conductive heat transfer from the heating element to the hot plate is avoided while still providing heat to the vaporizer tube, which vaporizer tube is in contact with the hot plate.