Abstract: An electromagnetic actuator includes an inner magnet arranged relative to an axis, an outer magnet arranged a radial distance from the axis, an inner radial wall of the outer magnet facing an outer radial wall of the inner magnet, the inner and outer radial walls being separated by an air gap, a voice coil arranged in the air gap separating the inner and outer magnets, and an actuator coupling plate attached to the voice coil. During operation of the device electrical activation of the voice coil causes axial motion of the actuator coupling plate.

Abstract: An electrical actuator for a bicycle rear derailleur making use of a standard wireless remote control (RC) servo unit relying exclusively on highly efficient spur gearing reduction and facilitating highly accurate derailleur positioning thereof through an integral digital magnetic rotary encoder with assembly thereof sealed in a two-piece housing with a lateral extension for an auxiliary spur gear serving to transmit actuation effort thereof to actuation shaft of a rear derailleur.

Abstract: A recirculating linear generator comprises a motor, a pulley system, two series of coil structures each arranged coaxially, a positive lead, and a negative lead. The pulley system includes a driver pulley driven by the motor and a take-up pulley. A belt couples to the driver pulley and the take-up pulley, so when driven, the belt travels along the driver pulley and the take-up pulley rotates. A series of ferromagnetic couple to the belt. The belt and masses traverse through a center (i.e., an axis) of the first series and second series of coil structures, and the first series and second series of coil structures each comprise a single electrical path. The positive lead couples to positive ends of the first and second series of coil structures, and the negative lead couples to negative ends of the first and second series of coil structures.

Abstract: A conveying-path rotary switching unit that is a conveying path switching device includes a base, stators arranged along conveying paths for branching for a conveying carriage, a first conveying path provided on the base, and a second conveying path that is provided on the base and is different from the first conveying path. As for a conveying path on which the conveying carriage travels, the first conveying path and the second conveying path are switchable by rotation. The stators are used for both the first conveying path and the second conveying path in a shared manner.

Abstract: Apparatus and method for supporting an elongated slender member having a high axial compression stress state during a change in length of the member.

Abstract: A magnetic coupling arrangement in a conveyor system, having at least one driver element for arrangement on a conveyor system, the driver element having a receiving body with a receiving space for receiving a magnet in the receiving space, wherein the magnet can be brought into coupling connection at its coupling side with a coupling side of a ferromagnetic counterpart for conveying force transmission, or has a ferromagnetic counterpart for a magnet in the receiving space. The ferromagnetic counterpart can be brought into coupling connection at its coupling side with a coupling side of a magnet for conveying force transmission. A ferromagnetic plate is arranged on the magnet on its side facing away from the coupling side in order to shorten the path of the magnetic lines of force on this side of the magnet.

Abstract: A power transmission assembly includes a base, a rotating frame rotatably coupled to the base and configured to rotate about an axis, an output shaft coupled to the rotating frame, a weight selectively repositionable relative to the rotating frame, and a weight actuator configured to reposition the weight relative to the rotating frame to move the weight from a subtraction position located at a first height to an addition position located at a second height. The second height is greater than the first height such that a gravitational force on the weight drives the rotating frame to rotate about the axis and drive the output shaft.

Abstract: The application relates to an electromagnetic control device, in particular for adjusting camshafts or a camshaft section of an internal combustion engine, comprising: an energizable coil unit, via which, in an energized state, an armature mounted for movement along a longitudinal axis of the control device can be moved relative to a pole core between a retracted position and an extended position; at least one tappet, which is mounted for movement along the longitudinal axis and, in an extended position, interacts with the camshaft via a free end in order to adjust the camshaft and is connected at an inner end to the armature, wherein the tappet has a first diameter in the region of the free end and has a second diameter in the region of the inner end, and the first diameter is greater than the second diameter.

Abstract: To provide a motor system that can control the position of a control object in multiple directions while suppressing the number of required switching elements. A motor system includes: a power conversion device including first, second, and third up-down arms each including two switching elements connected in series; a control object; and a first load including a magnetic pole tooth facing the control object, and a winding wound around the magnetic pole tooth. The motor system includes a second load including two magnetic pole teeth facing each other in a second direction with the control object therebetween, and a winding wound around one or both of the magnetic pole teeth. The power conversion device provides a force with respect to a first direction to the control object through an output to the first load, and provides a force with respect to the second direction to the control object through an output to the second load.

Abstract: A magnetic device includes first and second parts, a first magnetic part, with a first magnetic polarization, coupled to the first part, a second magnetic part, with a second magnetic polarization, coupled to the second part and an additional magnetic part coupled to the first part and having an additional magnetic polarization. The first and second magnetic parts magnetically interact with each other. The first magnetic part exerts a first force on the second magnetic part, the second magnetic part exerts a second force on the first magnetic part and the first and second forces have opposite directions that are parallel to a reference direction. The first magnetic polarization is substantially parallel to the reference direction, the second magnetic polarization is substantially perpendicular to the reference direction, the additional magnetic polarization makes an angle with the first magnetic polarization and has a magnitude in a range of about 90°-270°.

Abstract: A linear motor, comprises at least one stator device (14) with a plurality of permanent magnets (18, 18-1, 18-2) of different polarity and with at least one carrier rail (24), and at least one rotor device (12) with at least three electrical coils (44) and with at least one supporting means (26), which can be or which is supported on the carrier rail (24) of the stator device (14), wherein the rotor device (12) and the stator device (14) are moveable to and fro with respect to each other along a movement direction (FR) defined by the carrier rail (24) by interaction of magnetic fields of the permanent magnets (18, 18-1, 18-2) with the magnetic fields of the coils (44), through which current flows if required, wherein the stator device (14) is formed from at least one stator module (16-1, 16-2), wherein the stator module (16-1, 16-2) is configured such that a stator device (16) with two or more consecutively arranged stator modules (16-1, 16-2) can be formed, and wherein at the stator module (16-1, 16-2) at le

Abstract: An actuator unit of a sliding cam system includes an actuator pin for moving sliding cam units into different axial positions using at least one sliding groove on the circumference of the sliding cam units, which interacts with the actuator pin and which has at least one ejection ramp, the sliding cam system including an electromagnet unit, the actuator pins being loaded in the direction of the sliding cam unit by actuating springs, slidingly guided in a housing, the actuator pins being operatively connected to latching elements are guided in a shifting gate, spring-loaded and actuatable by the electromagnet unit, a return-stroke spring of the shifting gate being supported on the housing and loading the shifting gate in the insertion direction of the actuator pins, and the force of the return stroke spring is greater than the force of the actuating spring or springs.

Abstract: An acoustic exciter comprises a suspension made of an elastic material, which is coupled to the opening part of a frame, and a vibrator to which a voice coil disposed in the magnetic gap of a magnetic circuit connected to the suspension is coupled. An elastic body is so disposed between the frame and the vibrator as to be pressed against the frame and the vibrator. Thereby, the exciting efficiency of the vibrator can be increased, and the performance and tone quality of the acoustic exciter can be improved.

Abstract: Provided is a linear motor actuator which generates a sufficient thrust force and a retaining force and is remarkably smaller than conventional linear motor actuators. The linear motor actuator includes a base member (1) provided with a bottom plate (10) and a pair of side walls (11) and formed in a channel shape; a track rail (2) laid on the bottom plate along a longitudinal direction of the base member; a slide table (3) moving along the track rail; stator magnets (40) arranged on an inner side surface of each of side walls of the base member; and a pair of coil members (41) mounted to the slide table and opposed to the stator magnets provided to each of the side walls of the base member, thereby constituting a linear motor (4).

Abstract: An electromagnetic shifting device for a transmission (1) with an electronic control unit (22) and toothed gear wheels (6, 7), which are mounted to rotate on a transmission shaft (2) about an axis (3). To implement a gear stage, the toothed gear wheels can be connected in a rotationally fixed manner to the transmission shaft by moving a shifter pawl (4) axially along the axis. The shifter pawl is moved axially along the axis by a linear motor (12).

Abstract: An electromagnetic actuating apparatus having an electromagnetic actuating unit which can be operated in order to exert an actuating force for an elongated plunger unit, wherein the actuating unit is provided in a housing along its actuating direction. The actuator unit forms an engagement surface which is planar in places and can be moved axially in the actuating direction, at an engagement end facing the plunger unit, an end surface of the plunger unit on the engagement side interacts detachably with the engagement surface, and the plunger unit is seated by magnetic attraction with its end surface on the engagement side on the engagement surface of the actuator unit, wherein the plunger unit is preferably designed to be soft-magnetic and furthermore preferably composed of soft iron, in the area of the end surface.

Abstract: An electro-magnetic motor-generator system, including a wheel assembly having a wheel mounted onto a shaft. The shaft has a sleeve mounted thereon. A frame assembly is mounted onto the sleeve. The frame assembly comprises at least one hub having a sprocket. A gear assembly comprises a second sprocket mounted onto the shaft that engages the sprocket. A rotating ring assembly has first and second walls. The first wall comprises first gear teeth and the second wall comprises second gear teeth. The ring assembly further has consecutive magnetized/non-magnetized sections. The electro-magnetic means consist of at least one coil having first and second openings. Electro-magnetic means generate an electromotive force between said first and second openings, and said consecutive magnetized/non-magnetized sections. Switching said magnetic polarity forces said rotating ring assembly to rotate upon said sprocket thus rotating said wheel mounted onto said shaft.

Abstract: An electromagnetic actuating device comprising a plurality of electromagnetic actuation units (10, 12, 14), which can be selectively controlled for exerting an actuating force on a corresponding plurality of elongated tappet units (22, 24, 26) that are supported axially parallel, wherein the actuation units are provided in a common housing (18, 20; 78, 82) along the actuating direction axially parallel to each other, and form a contact surface that is at least planar in some sections and can be axially moved in the actuating direction at each associated engagement end facing the tappet units. A face (34, 36, 38) on the engagement side of each of the tappet units interacts with the engagement surface (28, 30, 32), wherein at least one of the plurality of tappet units sits eccentrically and/or with only a partial surface, with the face thereof on the engagement side, on the engagement surface of the associated actuation unit, particularly adheres to it magnetically.

Abstract: An electro-magnetic motor-generator system, comprising a wheel assembly having a wheel mounted onto a shaft. The shaft has a sleeve mounted thereon. A frame assembly is mounted onto the sleeve. The frame assembly comprises at least one hub having a sprocket. A gear assembly comprises a second sprocket mounted onto the shaft. The second sprocket engages the sprocket. A rotating ring assembly has first and second walls. The first wall comprises first gear teeth and the second wall comprises second gear teeth. The ring assembly further has consecutive magnetized/non-magnetized sections. The electro-magnetic means consist of at least one coil, and the at least one coil having first and second openings. Electro-magnetic means generate an electromotive force between said first and second openings, and said consecutive magnetized/non-magnetized sections. Switching said magnetic polarity forces said rotating ring assembly to rotate upon said sprocket thus rotating said wheel mounted onto said shaft.

Abstract: An electromagnetic transducer including a stator and an armature, the armature defining a first axis and being driven to ride between first and second couplers back and forth relative to the stator along the first axis. The second coupler is configured to permit movement of the armature along a second axis orthogonal to the first axis.

Abstract: A machine includes a moving part and a direct drive for moving the moving part. The direct drive includes a stator and an armature unit which interacts with the stator. A coupling device couples the armature unit to the moving part to allow a movement of the moving part in relation to the armature unit. The direct drive further includes a spacer device to maintain a distance between an active region of the stator and an active region of the armature unit, thereby defining the air gap between the stator and the armature unit.

Abstract: An acoustic exciter comprises a suspension made of an elastic material, which is coupled to the opening part of a frame, and a vibrator to which a voice coil disposed in the magnetic gap of a magnetic circuit connected to the suspension is coupled. An elastic body is so disposed between the frame and the vibrator as to be pressed against the frame and the vibrator. Thereby, the exciting efficiency of the vibrator can be increased, and the performance and tone quality of the acoustic exciter can be improved.

Abstract: An apparatus, system, and method for tuneful attenuation include at least one of speaker(s) and shaker(s) supported in a chair in a manner that enables at least one of resonance and even attenuation. In one embodiment, a shaker is mounted in a seat bottom by an attenuation member that includes a base and a plurality of somewhat flexible arms. The base is fixed to the shaker and the arms are coupled to a frame of the chair at positions that are at substantially equal distances from the shaker. Thus, the vibrations reach the frame at substantially the same time and are evenly and quickly attenuated. In other embodiments, the speakers and/or shakers are mounted in the chair by speaker cabinets that form part of and/or are rigidly fixed to the chair frame. In any case, vibrational energy transferred to the chair is better controlled and more tuneful.