In a printed circuit board (1) comprising a plurality of insulating layers and conductive layers, and comprising at least one cavity (7) at least one electromagnetic coil (8) is arranged on an outer layer (4) of the printed circuit board (1) and cooperates with a permanent magnet (6) arranged inside the at least one cavity (7).

A power generator 1 includes two magnetostrictive elements 10, 10 and a connecting member 7 having a first connecting portion 71 connecting one end portions of the magnetostrictive elements 10, 10 together, a second connecting portion 72 connecting the other end portions of the magnetostrictive elements 10, 10 together and a beam portion 73 connecting the first connecting portion 71 and the second connecting portion 72. Each of the magnetostrictive elements 10, 10 includes a magnetostrictive rod 2 formed of a magnetostrictive material, through which lines of magnetic force pass in an axial direction thereof, and a coil 3 wound around the magnetostrictive rod 2. Further, each magnetostrictive rod 2 and the beam portion 73 are arranged so as not to be overlapped with each other.

A magnetic decoupling unit (12) that is capable of magnetically releasing several types of magnetically releasable antitheft devices may include a magnet assembly (28). The magnet assembly (28) may be placed inside a magnet housing (20) with a cover (22) that has an aperture (24) and insert (26) for receiving portions of a magnetically releasable antitheft device. The magnet assembly (28) may include a first magnet (E) with a vertical magnetic orientation which is surrounded by adjacent magnets (B2, D, F1, F2) with magnetic orientations that are orthogonal to the vertical magnetic orientation. Additionally, the magnet assembly (28) includes one or more additional magnets (B1, C) oriented in the vertical and orthogonal directions. The resulting magnet assembly (28) may be capable of magnetically releasing single clutch, double clutch, and electronic media type antitheft devices.

A sintered neodymium-iron-boron magnet, the main components thereof comprising rare-earth elements R, additional elements T, iron Fe and boron B, and having a rare-earth-enriched phase and a main phase of a Nd2Fe14B crystal structure. The sum of the numerical values of the maximum magnetic energy product (BH)max in units of MGOe and the intrinsic coercive force Hcj in units of kOe is not less than 70. The manufacturing method of the sintered neodymium-iron-boron magnet comprises alloy smelting, powder making, powder mixing, press forming, sintering and heat treatment procedures. By controlling the component formulation and optimizing the process conditions, the sintered neodymium-iron-boron magnet is enabled to simultaneously have a high maximum magnetic energy product and a high intrinsic coercive force.

A packaging line (100) to pack profiles having a U-shaped or a C-shaped cross-section. The packaging line includes a first conveyor (1 06a) and a second conveyor (1 06b) which are parallel to each other and which are adapted to transfer profiles to an area beneath a head block (108). The head block (108) is adapted to move upward and downward and includes a rotor (110). The rotor is adapted to couple to a first profile (101) transferred by the two conveyors (1 06a, 106b) with a concave side of the first profile facing upwards and to rotate the first profile (101) such that the concave side of the first profile is facing downwards over a second profile (103), where a concave side of the second profile is facing upward. The rotor is further adapted to release the first profile to insert the first profile into the second profile to form a duplex (105).

Provided is a NdFeB system sintered magnet which is produced by the grain boundary diffusion method and yet has a high coercive force and squareness ratio with only a small decrease in the maximum energy product. A NdFeB system sintered magnet according to the present invention is a NdFeB system sintered magnet having a base material produced by orienting powder of a NdFeB system alloy and sintering the powder, with Dy and/or Tb (the "Dy and/or Tb" is hereinafter called R_H) attached to and diffused from a surface of the base material through the grain boundary inside the base material by a grain boundary diffusion treatment, wherein the number of grain-boundary triple points at which the difference C_t-C_w between the R_H content C_t (wt%) at the grain-boundary triple point and the R_H content C_w (wt%) at a two-grain boundary portion leading to that grain-boundary triple point is equal to or smaller than 4 wt% is equal to or larger than 60 % of the total number of grain-boundary triple points.

There are provided a rare-earth permanent magnet and a manufacturing method of the rare-earth permanent magnet capable of preventing deterioration of magnet properties. In the method, magnet material is milled into magnet powder, and the magnet powder is mixed with a binder made of a hydrocarbon to prepare slurry 12, and one or more kinds of organic solvents selected from a group of organic compounds consisting of hydrocarbons. Next, the slurry 12 is formed into a sheet-like shape to obtain a green sheet 13. After that, the green sheet 13 is held for a predetermined length of time at binder decomposition temperature in a non-oxidizing atmosphere so as to cause depolymerization reaction or the like to the binder, which turns into monomer and is removed. The green sheet 13 with the binder removed is sintered by raising temperature up to sintering temperature. Thereby a permanent magnet 1 is obtained.

There are provided a rare-earth permanent magnet and a manufacturing method thereof capable of preventing deterioration of magnet properties. In the method, magnet material is milled into magnet powder. Next, a mixture is prepared by mixing the magnet powder and a binder made of a fatty acid methyl ester and/or one of or a blend of polymers and copolymers each composed of monomers satisfying a given condition. Next, the mixture is formed into a sheet-like shape to obtain a green sheet. After that, the green sheet is held for a predetermined length of time at binder decomposition temperature in a non-oxidizing atmosphere so as to remove the binder by causing depolymerization reaction or the like to the binder, which turns into monomer. The green sheet from which the binder has been removed is sintered by raising temperature up to sintering temperature. Thereby a permanent magnet 1 is obtained.

There are provided a rare-earth permanent magnet and a manufacturing method thereof capable of simplifying manufacturing process and improving productivity through advanced ability to produce net shapes. In the method, magnet material is milled into magnet powder, and the magnet powder and a binder are mixed to prepare a mixture. Next, the prepared mixture is formed into a green sheet. Thereafter, the green sheet is held for predetermined time at binder decomposition temperature in non-oxidizing atmosphere, whereby depolymerization reaction or the like changes the binder into monomer and thus removes the binder. The green sheet with the binder removed therefrom undergoes pressure sintering such as SPS method so as to obtain a rare-earth permanent magnet 1.