A coil component includes a magnetic portion that includes metal particles and a resin material, a coil conductor embedded in the magnetic portion and having a core portion, and outer electrodes electrically connected to the coil conductor. The magnetic portion includes an outer coating and a magnetic base having a protrusion portion. The protrusion portion is inserted into the core portion. The filling factor of the metal particles in the magnetic base is higher than the filling factor of the metal particles in the outer coating.

A seamless convoluted hose assembly. The assembly includes: a tubular inner liner having an outer surface, an inner surface, and an inner liner wall therebetween which defines a passageway. The assembly further includes a helical coil or a plurality of annular loops which produce convolutions in the outer surface of the tubular liner when the tubular inner liner is forced through the helical coil or plurality of loops under heat and pressure.

A method and apparatus for joining parts. A plurality of conformable induction coils embedded in a number of elastomeric sheets is positioned relative to a first composite part of the parts and a second composite part of the parts. A magnetic field is generated with the plurality of conformable induction coils. The magnetic field is configured to generate heat in a magnetically permeable material at a joint location. The heat joins the first composite part and the second composite part to each other.

A method and apparatus for joining parts. A plurality of conformable induction coils embedded in a number of elastomeric sheets is positioned relative to a first composite part of the parts and a second composite part of the parts. A magnetic field is generated with the plurality of conformable induction coils. The magnetic field is configured to generate heat in a magnetically permeable material at a joint location. The heat joins the first composite part and the second composite part to each other.

An electromagnetic coil, a mold, and an electromagnetic coil manufacturing method are provided. The electromagnetic coil includes an annular main body, and an inner peripheral wall of the annular main body comprises multiple claw poles arranged at intervals in a circumferential direction. The electromagnetic coil further includes an encapsulation layer, and the encapsulation layer is capable of encapsulating an upper annular wall, a lower annular wall, and an outer peripheral wall of the annular main body. The encapsulation layer is not disposed between the claw poles, and is formed by injection molding of a resin material. In the electromagnetic coil provided in the present invention, the encapsulation layer is not disposed between the claw poles of the inner peripheral wall of the annular main body, such that after moisture having entered the interior of the coil can be discharged therefrom within a short time.