A cartridge is provided for an electrically heatable aerosol-generating system, the cartridge including: an aerosol-forming substrate including a liquid held in a capillary material; and a susceptor element including first and second fluid-permeable portions, the first fluid-permeable portion being disposed on a first side of the capillary material, and the second fluid-permeable portion being disposed on a second side of the capillary material opposite to the first side such that the capillary material is located in between the first and the second fluid-permeable portions of the susceptor element, the susceptor element being electrically isolated from other electrically conductive components. A heater assembly for an electrically heatable aerosol-generating system, and an electrically heatable aerosol-generating system, are also provided.

A cartridge is provided for an electrically heatable aerosol-generating system, the cartridge including: an aerosol-forming substrate including a liquid held in a capillary material; and a susceptor element including first and second fluid-permeable portions, the first fluid-permeable portion being disposed on a first side of the capillary material, and the second fluid-permeable portion being disposed on a second side of the capillary material opposite to the first side such that the capillary material is located in between the first and the second fluid-permeable portions of the susceptor element, the susceptor element being electrically isolated from other electrically conductive components. A heater assembly for an electrically heatable aerosol-generating system, and an electrically heatable aerosol-generating system, are also provided.

The invention relates to a method and a heating device (1c) for inductively heating a stator (2) or armature (3) of an electric machine, in particular before and during trickle impregnation thereof. In addition, the invention relates to an impregnating device (50) in which this heating device (1c) is integrated. According to the invention, it is provided that the heating takes place inductively by electromagnetic fields of different frequencies. For this purpose, it is provided in the case of the heating device (1c) that it has at least one electromagnetic inductor (18, 21, 24) which is disposed coaxially or axially parallel with respect to the longitudinal axis (7) of the stator (2) or armature (3) and which inductively heats said stator or armature, and that the at least one inductor (18, 21, 24) is designed to generate at least two electromagnetic fields of different frequencies.

The invention relates to a method and a heating device (1c) for inductively heating a stator (2) or armature (3) of an electric machine, in particular before and during trickle impregnation thereof. In addition, the invention relates to an impregnating device (50) in which this heating device (1c) is integrated. According to the invention, it is provided that the heating takes place inductively by electromagnetic fields of different frequencies. For this purpose, it is provided in the case of the heating device (1c) that it has at least one electromagnetic inductor (18, 21, 24) which is disposed coaxially or axially parallel with respect to the longitudinal axis (7) of the stator (2) or armature (3) and which inductively heats said stator or armature, and that the at least one inductor (18, 21, 24) is designed to generate at least two electromagnetic fields of different frequencies.

Fixtures and methods for induction heating of bored parts are described. The fixtures and methods may be used to counter the effects of convective heat transfer and thereby promote a more uniform temperature distribution around a bore of a bored part being heated. The fixture includes a base including one or more locators engaged with the part and locating the base relative to the part, and an induction heating coil supported by the base. The induction heating coil is disposed inside the bore of the part and is inductively coupled to the part. The induction heating coil is wound about a coil axis which is non-coaxial with a bore axis of the bore of the part during heating of the part.

Fixtures and methods for induction heating of bored parts are described. The fixtures and methods may be used to counter the effects of convective heat transfer and thereby promote a more uniform temperature distribution around a bore of a bored part being heated. The fixture includes a base including one or more locators engaged with the part and locating the base relative to the part, and an induction heating coil supported by the base. The induction heating coil is disposed inside the bore of the part and is inductively coupled to the part. The induction heating coil is wound about a coil axis which is non-coaxial with a bore axis of the bore of the part during heating of the part.

An induction heater removing paraffin deposits from a drill pipe includes an inductor having an external coil heating up the deposits in the pipe, and an internal coil heating up a heating element transmitting heat to a rod, conducting heat to a tip melting the deposits surrounding thereof. The tip encloses a thermistor generating temperature feedback signals corresponding to its temperature, being operatively restricted. The inductor includes a capacitor battery series-connected with the coils forming an LC-circuit having a resonance frequency operatively subjected to changes. Electric current in LC-circuit is generated by an HF inverter, and measured by a current transformer generating current feedback signals. The temperature and current feedback signals are transmitted to a microprocessor executing a program controlling the inverter's frequency, providing a power-efficient operation mode of the heater. The proposed design of the coils and a connector, interconnecting the internal coil with the battery, reduces energy losses.

An induction heater removing paraffin deposits from a drill pipe includes an inductor having an external coil heating up the deposits in the pipe, and an internal coil heating up a heating element transmitting heat to a rod, conducting heat to a tip melting the deposits surrounding thereof. The tip encloses a thermistor generating temperature feedback signals corresponding to its temperature, being operatively restricted. The inductor includes a capacitor battery series-connected with the coils forming an LC-circuit having a resonance frequency operatively subjected to changes. Electric current in LC-circuit is generated by an HF inverter, and measured by a current transformer generating current feedback signals. The temperature and current feedback signals are transmitted to a microprocessor executing a program controlling the inverter's frequency, providing a power-efficient operation mode of the heater. The proposed design of the coils and a connector, interconnecting the internal coil with the battery, reduces energy losses.

A screw bolt for connecting a lower casing part of a turbine and an upper casing part of a turbine, has a bolt body with a lower end and an upper end, an external thread being arranged on both the lower end and the upper end. A casing for a turbine has a lower casing part, an upper casing part, a screw bolt and two attachment nuts screwed onto ends of the screw bolt, wherein the upper casing part has an upper receiving section and the lower casing part has a lower receiving section of a continuous screw bolt receiving portion for receiving the screw bolt. A turbine has such a casing and a method for assembling such a casing of a turbine.

A screw bolt for connecting a lower casing part of a turbine and an upper casing part of a turbine, has a bolt body with a lower end and an upper end, an external thread being arranged on both the lower end and the upper end. A casing for a turbine has a lower casing part, an upper casing part, a screw bolt and two attachment nuts screwed onto ends of the screw bolt, wherein the upper casing part has an upper receiving section and the lower casing part has a lower receiving section of a continuous screw bolt receiving portion for receiving the screw bolt. A turbine has such a casing and a method for assembling such a casing of a turbine.