A line scanner assembly includes a cam with a cam surface, where the cam rotatable about a cam axis of rotation and includes a first ferromagnetic material. A mirror with a planar surface is configured to tilt about a mirror axis of rotation. A follower is attached to the mirror and has a second ferromagnetic material, where the first magnetic material and/or the second magnetic material includes a permanent magnet and where the follower maintains contact with the cam due to a magnetic attraction between the first ferromagnetic material and the second ferromagnetic material.

A radial magnetic bearing having an inner rotor including a central shaft having a ferromagnetic armature mounted on the shaft and an outer stator providing a plurality of electromagnets including poles made of ferromagnetic material which project radially inwardly towards the rotor is provided. As such, air-gaps (e) are left between end faces of the poles and the ferromagnetic armature, and coils wound around the poles. The poles are extended through outer portions attached to a supporting member. Each pole and the corresponding outer portion are included in an angularly segmented module providing a stack of laminations made of ferromagnetic material. The outer portion defines shoulders with respect to the corresponding pole, the outer portion contacting outer portions of neighboring segmented modules and the outer portions of all segmented modules being assembled by clamping rings, wherein the coils located in free spaces around the poles are mounted in a string.

A device can include a housing that comprises a front side that includes a display operatively coupled to display circuitry and a back side that comprises a ferromagnetic surface, a hinge assembly, and a recess; and a ferromagnetic panel transitionable via the hinge assembly from a storage position in the recess to a bridge position that covers the ferromagnetic surface.

An active part of an electrical machine includes teeth, each having a tooth base, a tooth height, open or closed grooves between the teeth, and windings introduced into the grooves. Each winding encloses at least one of the teeth. The active part has a thickness, starting from the outer surface of the respective tooth bases and extending along the teeth, that is greater than the tooth height. The active part, starting from the respective tooth base up to a limit depth, which is not more than equal the tooth height, has a first material with a first magnetic permeability and starting from the limit depth a second material with a second magnetic permeability. The first magnetic permeability is greater than the second magnetic permeability. The limit depth is essentially half as great as the tooth height.

A magnetic impulse ring having a central axis that includes a target holder and a target that is fixed to the target holder. The target provides a plurality of alternating South and North magnetic poles. The target is adapted to cooperate with magnetic detection means for tracking the rotation of the magnetic impulse ring around its central axis. The Total Pitch Deviation (TPD) of the magnetic impulse ring is less than or equal to 0.5%.

The purpose of the present invention is to provide an actuator that has a simple configuration and can stably achieve high output without the occurrence of magnetic saturation. This actuator has: a movable body provided with a cylindrical magnet section having alternately N-pole faces and S-pole faces on the peripheral surface surrounding a rotation shaft; and a fixed body provided with, pole tooth surfaces of the same number as the N-pole faces and the S-pole faces, and a coil that excites the pole tooth sections. The movable body has as a turning reference position a position at which the center of the pole tooth surfaces in the circumferential direction and the switching position of the pole faces of the magnet section face each other, and is held to the fixed body so as to be turnable back and forth around the rotation shaft in the circumferential direction.

A porous ultrasonic bearing includes a ring, a high-strength outer casing, a bearing bushing and a vibration collar. The high-strength outer casing is sheathed on the bearing bushing, and a group of radial holes that penetrate are provided on the bearing bushing. The vibration collar is arranged between the high-strength outer casing and the bearing bushing. The outer cylindrical surface of the vibration collar is fixedly connected to the inner hole of the high-strength outer casing. A gap is provided between the inner hole of the vibration collar and the outer cylindrical surface of the bearing bushing. The vibration collar radially vibrates at high frequency. A high-strength lubricating oil film is formed between the inner hole of the bearing bushing and the shaft, so that the friction between the inner hole of the bearing bushing and the shaft is reduced.

A porous ultrasonic bearing includes a ring, a high-strength outer casing, a bearing bushing and a vibration collar. The high-strength outer casing is sheathed on the bearing bushing, and a group of radial holes that penetrate are provided on the bearing bushing. The vibration collar is arranged between the high-strength outer casing and the bearing bushing. The outer cylindrical surface of the vibration collar is fixedly connected to the inner hole of the high-strength outer casing. A gap is provided between the inner hole of the vibration collar and the outer cylindrical surface of the bearing bushing. The vibration collar radially vibrates at high frequency. A high-strength lubricating oil film is formed between the inner hole of the bearing bushing and the shaft, so that the friction between the inner hole of the bearing bushing and the shaft is reduced.

A core element for a magnetic component includes a plurality of ferromagnetic sections for conducting a magnetic flux. Adjacent ones of the ferromagnetic sections are connected to each other with ferromagnetic isthmuses keeping the adjacent ones of the ferromagnetic sections a distance apart from each other, and/or the gaps between the ferromagnetic sections are filled with electrically insulating solid material and adjacent ones of the gaps are connected to each other via openings through the ferromagnetic sections and filled with electrically insulating solid material. The ferromagnetic sections can constitute for example a stack of ferromagnetic sheets or a bundle of ferromagnetic filaments. The core element can be manufactured by three-dimensional printing and thus it is possible to make core elements which are not possible or at least not cost effective to be made by shaping ferromagnetic sheets which are originally planar.

The purpose of the present invention is to provide an actuator that has a simple configuration and can stably achieve high output without the occurrence of magnetic saturation. This actuator has: a movable body provided with a cylindrical magnet section having alternately N-pole faces and S-pole faces on the peripheral surface surrounding a rotation shaft; and a fixed body provided with, pole tooth surfaces of the same number as the N-pole faces and the S-pole faces, and a coil that excites the pole tooth sections. The movable body has as a turning reference position a position at which the center of the pole tooth surfaces in the circumferential direction and the switching position of the pole faces of the magnet section face each other, and is held to the fixed body so as to be turnable back and forth around the rotation shaft in the circumferential direction.