An electromagnetic system for controlling the operating mode of a non-friction coupling assembly and a coupling and magnetic control assembly are provided. Magnetic circuit components include a ferromagnetic or magnetic element received within a pocket of a coupling member. The element controls the operating mode of the coupling assembly. A stationary electromagnetic source includes at least one excitation coil which generates a magnetic field between poles of the source when the at least one coil is supplied with current. Ferromagnetic or magnetic first and second inserts are received and retained within first and second spaced passages, respectively, of the coupling member. The electromagnetic source, the element, the inserts and air gaps between the various magnetic circuit components make up a closed loop path containing magnetic flux so that the element moves between first and second positions of the element when the at least one coil is supplied with current.

A rotating shaft connection apparatus and a multi-screen mobile terminal device are related to. The rotating shaft connection apparatus includes a rotating shaft, a drive member, an adapting member, and a magnetic member. The drive member is fixed on the rotating shaft; the adapting member and the magnetic member are rotatably sleeved on the rotating shaft; the adapting member is located between the drive member and the magnetic member; and the adapting member is slidably engaged with the rotating shaft in an axial direction. In a first state, the adapting member is engaged with the drive member in a locking manner, and the rotating shaft is rotated so as to rotate the adapting member; and in a second state, the rotating shaft stops rotating, and the adapting member is engaged with the magnetic member in a locking manner.

An electric actuator comprises a housing and an output shaft reciprocatingly received by the housing. There is a screw assembly disposed within the housing and coupled to the output shaft. The screw assembly includes a plurality of annular rollers and a central screw received by the annular rollers. The annular rollers are rotatable about the central screw. There is a motor which includes a stator and a rotor. The rotor has an inner bore which engages the annular rollers. Rotation of the rotor causes the central screw to translate axially relative to the rotor and the output shaft to reciprocate relative to the housing.

Overrunning, non-friction coupling and control assemblies, a switchable linear actuator device and a reciprocating electromechanical apparatus for use in the assemblies are provided. The device and apparatus control the operating mode of at least one non-friction coupling assembly. The device and apparatus have a plurality of magnetic sources which produce corresponding magnetic fields to create a net translational force. The net translational force comprises a first translational force caused by energization of at least one electromagnetic source and a magnetic latching force based upon linear position of a permanent magnet source along an axis. One or more cams are utilized to control whether a locking member either couples or uncouples its corresponding coupling assembly.

A switchable linear actuator device and an overrunning, non-friction, radial coupling and control assembly using the device are provided. The device has magnetic sources which produce corresponding magnetic fields to create net translational forces. The device includes a first and locking members and a stator structure including a first and second electromagnetic sources configured to create first and second electronically-switched magnetic fields, respectively. A translator structure includes first and second cams having contour surfaces and a magnetically-latching, permanent magnetic source magnetically coupled to the stator structure across a radial air gap. The translator structure translates along an axis between first and second axial positions and between second and third axial positions upon experiencing first and second net translational forces, respectively, to cause the first and second locking members to ride on the contour surfaces of the first and second cams, respectively, and perform a sequenced shift.

A one-way clutch includes a first clutch member, a second clutch member disposed coaxially with the first clutch member for rotation relative to the first clutch member, and an electromagnetic actuator assembly. The assembly is supported on one of the clutch members and configured to engage the other of the clutch members. The assembly includes a core, a coil disposed therearound, and a magnetic armature having an aperture therethrough. The armature is pivotable toward a longitudinal end of the core by energization of the coil from a de-energized position to an energized position such that the end of the core resides in the aperture in at least one of the positions.

A gas laser apparatus includes: a magnetic bearing including an electromagnet capable of controlling a magnetic force, and configured to rotatably support a rotary shaft of a fan in a magnetically levitated state by the magnetic force, the fan being configured to supply a laser gas; an electromagnet control unit configured to control the magnetic force of the electromagnet based on displacement of a levitated position of the rotary shaft and adjust the levitated position; a motor configured to generate torque for rotating the fan; a magnetic coupling configured to couple the rotary shaft and a drive shaft of a motor with a magnetic attractive force and transmit the torque of the motor to the rotary shaft; an attractive force estimating sensor configured to detect a parameter that enables an attractive force of the magnetic coupling to be estimated; an attractive force measuring unit configured to measure the attractive force of the magnetic coupling based on the detected parameter; and a correction unit configured to correct the magnetic force of the electromagnet according to a variation in the attractive force measured by the attractive force measuring unit.

An overrunning, non-friction coupling and control assembly, an engageable coupling assembly and locking members for use in the assemblies are provided. A centroid or center of mass of at least one of the locking members is substantially centered on a pivot axis of the locking member so that the locking member is substantially centrifugally neutral or balanced thereby making the locking member easier to pivot between engaged and disengaged positions with respect to the coupling members of its corresponding assembly at high rotational speeds.

A vehicle transfer structure includes a main-drive-wheel output shaft that receives torque from a drive source and outputs it to main drive wheels, a part-time-drive-wheel output shaft provided parallel to the main-drive-wheel output shaft, a coupling provided on the main-drive-wheel output shaft and which partially extracts the torque to the part-time-drive-wheel output shaft via a transmission mechanism, and a damper disposed on the main-drive-wheel output shaft. The coupling is provided with an input-side coupling part coupled to an inner circumferential part of the damper. The input-side coupling part is coupled, via a spline-fitted section, to an output-side coupling part of a drive force transmission member which is coupled to an outer circumferential part of the damper and transmits a drive force to a driving-side transmission member of the transmission mechanism. The spline-fitted section allows a relative rotation between the input- and output-side coupling parts within a given angle.

A robot control device has a drive shaft driven by a servo motor including a non-excited operation type electromagnetic brake, wherein, in a brake release state of the non-excited operation type electromagnetic brake, energization ON and energization OFF of an exciting coil of the non-excited operation type electromagnetic brake are alternately repeated, and at that time at least the timing of the energization ON is deviated between a plurality of exciting coils. It is possible to realize heat generation suppression/energy saving while suppressing generation of noise in the non-excited operation type electromagnetic brake of the robot.