The core metal for resin welding improves bonding strength between an outer peripheral resin member and the core metal. The outer peripheral resin member 30 is welded to the peripheral surface 21 of the core metal 20 by fitting the core metal into a fitting hole 31 of the outer peripheral resin member 30, preparing the outer peripheral resin member 30 providing the fitting hole 31 with a smooth internal wall surface; preparing the core metal 20 wherein streaky protrusions 26 and smooth portions 25 are provided; allowing the top parts of the protrusions 26 to contact, and the smooth portions of the core metal 20 to face the smooth internal wall surface; and induction heating to weld the outer peripheral resin member 30 to the protrusions 26 and the smooth portions 25.

The core metal for resin welding improves bonding strength between an outer peripheral resin member and the core metal. The outer peripheral resin member 30 is welded to the peripheral surface 21 of the core metal 20 by fitting the core metal into a fitting hole 31 of the outer peripheral resin member 30, preparing the outer peripheral resin member 30 providing the fitting hole 31 with a smooth internal wall surface; preparing the core metal 20 wherein streaky protrusions 26 and smooth portions 25 are provided; allowing the top parts of the protrusions 26 to contact, and the smooth portions of the core metal 20 to face the smooth internal wall surface; and induction heating to weld the outer peripheral resin member 30 to the protrusions 26 and the smooth portions 25.

Apparatus and method for induction sealing workpieces, in which a series of workpieces are conveyed along a path extending in a conveyance direction, and each workpiece is exposed to a first electromagnetic field generated by a first induction head and to a second electromagnetic field generated by a second induction head, each of the first and second electromagnetic fields inducing eddy currents through the entirety of each workpiece. Respective magnetic axes of the first and second induction heads are non-parallel to each other such that each workpiece is exposed to a plurality of differently oriented electromagnetic fields as the workpiece is conveyed along the path.

A cooking apparatus includes a non-ferrous cooking vessel configured to receive food. The cooking apparatus also includes a ferrous cooking vessel cover that is configured for placement over a top of the non-ferrous cooking vessel. The cooking apparatus also includes one or more induction heating elements suspended from the ferrous cooking vessel cover, and a radiation source. The radiation source is configured to deliver electromagnetic radiation to the ferrous cooking vessel cover and the one or more induction heating elements such that the ferrous cooking vessel cover and the one or more induction heating elements are heated.

A cooking apparatus includes a non-ferrous cooking vessel configured to receive food. The cooking apparatus also includes a ferrous cooking vessel cover that is configured for placement over a top of the non-ferrous cooking vessel. The cooking apparatus also includes one or more induction heating elements suspended from the ferrous cooking vessel cover, and a radiation source. The radiation source is configured to deliver electromagnetic radiation to the ferrous cooking vessel cover and the one or more induction heating elements such that the ferrous cooking vessel cover and the one or more induction heating elements are heated.

A method includes a coating step of coating a vulcanizing adhesive at a surface of a vulcanized centrum of a rubber bush; a heating step of heating a portion to be adhered of a stabilizer bar; a fitting step of fitting the centrum of the rubber bush at which the vulcanizing adhesive is coated on the heated portion to be adhered of the stabilizer bar; and an adhering step of clamping the rubber bush in a radial direction by a clamping device to adhere the rubber bush on the portion to be adhered of the stabilizer bar.

A portable drug testing device for handheldly collecting a sample from exhaled breath of a subject for further sensor based analysis. The portable drug testing device comprising a housing comprising at least one inlet and at least one outlet for the exhaled breath to exit through, and a sampling membrane arranged in the housing. a tubular element having a mouthpiece section for the subject to exhale into, and a selective trap section in fluid communication with the mouthpiece and the inlet of the housing having a non-straight gas flow path for letting aerosols pass through the tubular element. The sampling membrane is arranged to collect the aerosols from the exhaled breath. The portable drug testing device further comprises a volume measure unit for determining that a pre-defined volume of the exhaled breath has passed through the sampling membrane.

A portable drug testing device for handheldly collecting a sample from exhaled breath of a subject for further sensor based analysis. The portable drug testing device comprising a housing comprising at least one inlet and at least one outlet for the exhaled breath to exit through, and a sampling membrane arranged in the housing. a tubular element having a mouthpiece section for the subject to exhale into, and a selective trap section in fluid communication with the mouthpiece and the inlet of the housing having a non-straight gas flow path for letting aerosols pass through the tubular element. The sampling membrane is arranged to collect the aerosols from the exhaled breath. The portable drug testing device further comprises a volume measure unit for determining that a pre-defined volume of the exhaled breath has passed through the sampling membrane.

An induction heating tool that holds voltage or current supplied to the induction tank circuit constant and tracks changes in the other of voltage or current during each induction heating cycle. The disclosed induction heating tool exploits the fact that the resistance an attachment plate increases along with the temperature of the attachment plate. During an induction heating cycle, the attachment plate is magnetically coupled to a work coil and the resistance of the attachment plate is reflected to the circuit. Changes in the resistance of the attachment plate alter the pattern of energy delivery from the work coil to the attachment plate in a predictable way. Calculations accurately predict the temperature of the attachment plate over a wide variety of ambient conditions, including the presence of moisture at the membrane/attachment plate interface. The disclosed induction heating tool produces consistent results without calibration for ambient conditions.

A method for manufacturing an electrode assembly according to the present disclosure includes: a lamination process, a cutting process, a stacking process, an induction heating process, and unit cell bonding process. The lamination process includes alternately stacking electrodes and separators and bonding the alternately stacked electrodes and separators to each other. The cutting process includes cutting the alternately stacked electrodes and separators to a predetermined size to form a plurality of unit cells. The stacking process includes sequentially stacking the plurality of cut unit cells to form a cell stack. The induction heating process includes heating the cell stack by an induction heater. Finally, the unit cell bonding process includes pressing the heated cell stack to bond the plurality of unit cells to each other. A device for manufacturing the electrode assembly is also disclosed.