A magnetic pole piece device, which is disposed between an inner diameter side magnet field and an outer diameter side magnet field of a magnetic gear, includes a plurality of magnetic pole pieces disposed at intervals in a circumferential direction of the magnetic gear. Each of the plurality of magnetic pole pieces includes a plurality of plate-shaped electrical steel sheets having a longitudinal direction. The plurality of electrical steel sheets are laminated along the circumferential direction, with the longitudinal direction being along an axial direction of the magnetic gear.

An electrical sheet includes an electrical sheet main body produced by additive manufacturing (a 3D screen printing method) from at least a first and a second material. The first and second materials have magnetic properties which differ from one another, and first and second domains are formed in the electrical sheet main body from the first and second materials respectively. An electric machine is also provided. An electric machine and a method for producing an electrical sheet for use in a stator or rotor of an electric machine are also provided.

A is constructed such that upper and lower shafts, which are coaxial, are rotated in opposite directions using a single coil winding, simplifying the structure of the motor apparatus and reducing the numbers of sensors and controllers to be mounted thereon.

A is constructed such that upper and lower shafts, which are coaxial, are rotated in opposite directions using a single coil winding, simplifying the structure of the motor apparatus and reducing the numbers of sensors and controllers to be mounted thereon.

A laminated core includes a plurality of electrical steel sheets stacked in a thickness direction, the electrical steel sheet includes an annular core back part and a plurality of tooth parts that protrude from the core back part in a radial direction and are disposed at intervals in a circumferential direction of the core back part, a fastening part is provided in a portion of the core back part corresponding to the tooth part, and an adhesion part is provided in the tooth part.

A coil substrate includes a flexible substrate having a first end and a second end on the opposite side with respect to the first end, and coils formed on the flexible substrate such that the coils are positioned substantially in a row between the first end and second end of the flexible substrate. The coils are formed such that the number of coils is K and that the coils include the first coil positioned close to the first end and the K-th coil positioned to form a predetermined distance between the K-th coil and the second end, where K is an integer equal to or greater than 2.

A coil substrate includes a flexible substrate having a first end and a second end on the opposite side with respect to the first end, and coils formed on the flexible substrate such that the coils are positioned substantially in a row between the first end and second end of the flexible substrate. The coils are formed such that the number of coils is K and that the coils include the first coil positioned close to the first end and the K-th coil positioned to form a predetermined distance between the K-th coil and the second end, where K is an integer equal to or greater than 2.

A linear drive system for an elevator installation having an elevator car includes a stationary part for alignment with a hoistway wall of the elevator installation and a movable part that moves along the stationary part. The movable part is connected to the elevator car or to a counterweight, wherein the stationary part is shaped so as to substantially envelope the movable part.

A linear drive system for an elevator installation having an elevator car includes a stationary part for alignment with a hoistway wall of the elevator installation and a movable part that moves along the stationary part. The movable part is connected to the elevator car or to a counterweight, wherein the stationary part is shaped so as to substantially envelope the movable part.

A linear actuator, and a tufting machine including the linear actuator are provided. The linear actuator includes a casing, a magnet unit, and a coil unit. The magnet unit includes a magnet and a magnet mounting plate. The magnet is configured to sandwich side surfaces of the magnet mounting plate. The coil unit faces the magnet. The magnet unit is configured to reciprocate along an axial direction in the casing, between the coil unit, based on magnetization and demagnetization of the coil unit.