Abstract: Method for adjusting a transport vehicle for a container handling system, where the transport vehicle comprises two oppositely disposed secondary parts which can be driven electromagnetically as an armature by way of a linear motor system of the container handling system, wherein in a device for adjusting, a first magnetic force of the first secondary part is determined with a sensor, in that a second magnetic force of the second secondary part is determined with the sensor; and in that the first magnetic force and the second magnetic force are compared with one another and/or with at least one reference force, and the two secondary parts are adjusted based thereon at the transport vehicle in such a way that the first magnetic force and the second magnetic force are of the same magnitude.

Abstract: An armature includes a plurality of cores arranged in a straight line and discontinuous with each other, a plurality of coils wound around each of the cores, and a holding section configured to hold the cores. At least one of the cores include division cores separate from each other and arranged in an axial direction thereof. Each of the division cores has a flange at a contact surface thereof that is in contact with the holding section, and at least a portion of the contact surface protrudes toward the holding section to form the flange.

Abstract: An electromotive machine having a stator (122) comprising a plurality of coils (120) and a plate (10) is disclosed. The plate (10) has a plurality of through slots (15) formed therein. A portion of the plate (10) faces a corresponding coil (120) and is located relative to the coil (120) such that, in use, heat from the coil (120) flows into said portion. A transportation system (91) including such an electromotive machine is also disclosed. Also disclosed is a coil (20) for an electromotive machine comprising a conductor being wound in a plurality of turns and having two ends (25, 35) located on the outside of the coil (20).

Abstract: An inductor magnetic core and an inductor using the same are disclosed. The inductor magnetic core includes a middle column, an upper yoke, a lower yoke, and at least two high magnetically-permeable side columns. The middle column is disposed between a middle part of the upper yoke and a middle part of the lower yoke, a coil is wound the middle column, and a saturation magnetic flux density of the middle column is higher than that of the upper yoke and the lower yoke. The at least two high magnetically-permeable side columns are disposed in interval between the upper yoke and the lower yoke, and two ends of each high magnetically-permeable side column are connected to outer edges of the upper yoke and the lower yoke, respectively. The inductor magnetic core and the inductor of the present invention improves utilization of the yoke, and also provide compact structure and simple production.

Abstract: A hard disk drive includes a drive case and a cover plate, the storage media platers and a spindle, the recording heads and actuators, the connection port, the control logic board and one or more voice coil motor, where the actuators are operated via a voice coil motor; wherein the voice coil motor magnets comprise of a pair of composite permanent magnets on both sides of the voice coil, where each piece of composite permanent magnet comprising: a first core magnet M1, a cladding magnet Mc12 and a second core magnet M2; the magnetization direction of M1 and M2 are opposite to each other; the magnetization direction of Mc12 is substantially perpendicular to the magnetization direction of M1 and M2; the ratio of the width of Mc12 to the thickness or the height of Mc12 is 4:1 or less as seen from the back view.

Abstract: A track element of a non-contact bearing extending in a length direction. The track element includes a conductive material strip having a facing surface with a height and width and a rear surface opposite the facing surfaces. The conductive material strip includes a slit extending in a height direction to form a first leg and a second leg, in which the first leg is bent in a zig-zag shape and the second leg is bent in a zig-zag shape that is complementary to the bending of the first leg. When the conductive material strip is viewed in a direction parallel to the facing surface, the first leg and the second leg cross each other at least once.

Abstract: Disclosed are: preparing a rotor core having a plurality of magnet holes spaced near a circumferential edge of the rotor core; preparing a plurality of permanent magnet units each including a porous body and a magnet main body disposed in contact with each other; and inserting the permanent magnet units into the magnet holes and securing the permanent magnet units in the magnet holes.

Abstract: A fail-safe system for powering a multistage hi-torque motor, providing monitoring, redundancy, and alternate modes to improve reliability.

Abstract: A linear compressor is provided. The linear compressor may include a shell having a cylindrical shape, a shell cover that covers both open ends of the shell, a cylinder accommodated into the shell and defining a compression space for a refrigerant, a piston that reciprocates within the cylinder in an axial direction to compress the refrigerant within the compression space, a motor assembly including a motor that provides power to the piston and a stator cover that supports the motor, and resonant springs seated on the stator cover that support the piston to allow the piston to perform a resonant motion. The resonant springs may be circularly arranged at three points having a same interval around a center in an axial direction.

Abstract: The linear motor includes a stator and a mover. The stator includes: a board part having a rectangular plate shape, a plurality of magnetic pole teeth which are juxtaposing to each other on the board part and around each of which a coil is wound, and an auxiliary tooth which is arranged in an end part of the board part in a juxtaposed direction in a manner of being separate from the magnetic pole teeth and around which a coil is not wound. The mover includes: a plurality of magnets whose tip surfaces face the stator, and a back yoke having a rectangular plate shape in which the plurality of magnets are aligned in a straight line such that magnetic poles are alternately formed.

Abstract: A six-degree-of-freedom linear motor is disclosed, including a magnet array and a coil group disposed above the magnet array, the magnet array includes a first Halbach magnet array and a second Halbach magnet array, the first Halbach magnet array has a parallelogrammic cross section in a plane defined by X- and Y-axes, the first Halbach magnet array has a first side parallel to the Y-axis and a second side forming an angle of ? with the Y-axis, the second Halbach magnet array is in mirror symmetry with the first Halbach magnet array with respect to the Y-axis, and the coil group includes a first, second, third and fourth coil group, each having an axis inclined at an angle of ? with respect to the Y-axis, the first and second coil groups are in mirror symmetry with the third and fourth coil groups with respect to the Y-axis, respectively.

Abstract: The invention is a high torque and energy efficient electric motor. With a larger diameter shaft and shortened length, the design of the motor is pancaked. With high torque, the electric motor can operate efficiently by taking advantage of repelling and attracting forces from magnetic fields. Two embodiments of the invention for the high torque motor are designed to be energy efficient utilizing lifting design electromagnets, and low current flow in relation to the magnetic field produced is a key element of the invention.

Abstract: In accordance with the present application, a high density, low impedance piezoelectric power generator is provided. In an example embodiment, the piezoelectric power generator has a plurality of piezoelectric elements arranged in a first predefined pattern; a plurality of actuators arranged in a second predefined pattern operably positioned to excite one or more of the plurality of the piezoelectric elements simultaneously within at least a first subset; and an electrical conduction system connected to sum the electrical power produced by the simultaneously excited piezoelectric elements within the first subset and for conducting an electrical current.

Abstract: A dual diamagnetic linear resonant actuator includes a magnetic induction element, a magnet set and a coil. The magnet set comprises four magnets. The N pole of first magnet, the N pole of second magnet, the S pole of third magnet and the S pole of fourth magnet press respectively against the first, second, third and fourth sides of the magnet induction element. The coil surrounds the magnetic induction element and the third and fourth magnets, and maintains a distance from the first end and the second end of the magnetic induction element, and from the N pole of the third and fourth magnets. As such, the first and second magnets compress magnetic field lines, and the third and fourth magnets strengthen the magnetic force, and guide the magnetic field lines towards the coil to accomplish concentration of magnetic field density and to avoid divergence of the magnetic field lines.

Abstract: A positioning device in a gantry type of construction includes two linear guides that are arranged parallel to each other on a base and support a first cross member and a second cross member in a manner allowing movement in a first direction. A carriage having a functional element is supported on the first cross member in a manner allowing movement in a second direction. Position-measuring devices for measuring the position of the carriage relative to the second cross member are disposed on the carriage and on the second cross member.

Abstract: A method and device for acquiring a rotor position based on a permanent magnet synchronous drive system. The permanent magnet synchronous drive system includes an inverter and a permanent magnet synchronous motor, wherein the initial speed of the permanent magnet synchronous motor is not zero. The method includes: controlling a bridge arm switch of an inverter periodically; collecting a three-phase current of the permanent magnet synchronous motor at a fixed time within each control period; and after the three-phase current is reversed, sending same to a phase-locked loop system to conduct processing, so as to obtain a phase angle of an induction potential vector, and according to the phase angle of the induction potential vector, acquiring a rotor position angle of the permanent magnet synchronous motor.

Abstract: A magnetic track system for a transport device for moving a rotor along the magnetic track system includes a plurality of linear sections having an even number of magnets of alternating polarity, which are disposed on a support in each case, the magnetic orientation of the magnets reversing itself at regular intervals across abutting sections n the linear regions of the magnetic track system. In the curved regions of the magnetic track system, on the other hand, the polarity of two adjacent magnets of different sections is the same.

Abstract: The invention relates to an optoelectronic sensor device (1) for a motor vehicle, for detecting objects located in the surroundings of the motor vehicle, having a transmitting unit (2) for emitting an optical transmission signal (5), having a receiving unit (7) for receiving a reception signal (8) which is the transmission signal (5) reflected by an object, wherein the receiving unit (7) has at least two receiving elements (9, 10, 11) which are arranged distributed along a distribution direction (12), and reception optics (13), in particular a receiving lens which is positioned ahead of the receiving elements (9, 10, 11) in the propagation direction (14) of the reception signal (8), having a securing device (22) for securing the receiving optics (13), and having a diaphragm (21, 21?) for reducing the intensity of the reception signal (8), wherein the diaphragm (21, 21?) is secured to the securing device (22).

Abstract: A vibration type electromagnetic generator is formed by a nonmagnetic material and includes a hollow first pipe whose both end portions are closed, a magneto coil which is wound around the periphery of the first pipe and which is provided with solenoid coils, and a movable magnet which is arranged inside the first pipe and which is movable along a winding axis direction of a magneto coil. Then, the movable magnet includes a plurality of magnets and a magnet fixing unit composed of a nonmagnetic body for fixing the plurality of magnets whose same magnetic poles are facing one another, and among the plurality of solenoid coils, the coil length of one or more solenoid coils are made to be length equal to or greater than the magnet length of the magnet.

Abstract: The disclosure discloses a motor including a stator and a mover. The stator and the mover are arranged facing each other so as to be relatively movable via a magnetic air gap. Any one of the stator and the mover includes a yoke, a plurality of teeth, and a plurality of coils. The plurality of teeth are disposed protruding from the yoke to the magnetic air gap side. The plurality of coils are wound around the plurality of teeth. The plurality of coils include, for each phase, coil groups. Each of the coil groups includes a plurality of the coils. The coils are continuously arranged along the relative movement direction and are in-phase with each other and have the same wire diameter with each other. The coil group includes at least one the coil in which a coil width is larger than a teeth pitch.

Abstract: A mover, in which at each outer surface of a cornered tubular inner yoke, a flat plate magnet magnetized from inside to outside in a direction perpendicular to the outer surface, a flat plate magnet magnetized in an axial direction of the inner yoke, a flat plate magnet magnetized from outside to inside in the direction perpendicular to the outer surface, and a flat plate magnet magnetized in the axial direction of the inner yoke are alternately provided in this order, is passed through an armature in which a first single pole unit and a second single pole unit rotated by 90° with respect to the first single pole unit are alternately stacked, thus forming a linear motor. Windings are collectively wound around core portions of the first single pole unit. Positions of the magnets provided at the outer surfaces of the inner yoke are deviated from each other.

Abstract: Multiple arrays of linear motors and generators are combined in a radial configuration to provide high mechanical efficiency to deliver power in a single plane of motion to a common crankshaft. Magnet core assemblies for the motors and generators use powerful rare earth magnets positioned within an outer flux containment shell comprising a highly-magnetically-permeable ferrous-alloy to provide high power density. The motor magnet stack is attached directly to a link rod that connects to the crankshaft. Pulsed power is provided to electromagnetic coils coils by microcomputer control, and coil energy is recovered at the ends of the linear stroke. A controller energizes the coils in certain combinations of coil location and polarity in order to produce bi-directional mechanical motion. Energy that is released when coils are switched off is harvested as voltage pulses returned to standby batteries or capacitors, or the electrochemical cells.

Abstract: A method for controlling the pressure and/or the flow rate of a fluid includes withdrawing flow energy from a fluid flowing through a pipeline (15). This energy is converted at least partially into electrical energy and used for the electrical control (65) of the flow rate and/or the pressure of a fluid. The device for controlling the flow rate and/or pressure of a fluid in a pipeline (20) has at least one electric generator (35), which is developed for the withdrawal of flow energy from a flowing fluid and for converting this energy at least partially into electrical energy. The device has a control mechanism (65) for controlling the flow rate and/or pressure of a fluid in a pipeline (20) with an electric driving mechanism supplied by the generator (35).

Abstract: Provided is a highly responsive linear motor that can be constructed by reducing the weight of a mover. In order to attain this object, the linear motor includes a secondary side (a mover 30) in which magnets 3 and ladder-shaped members 4 of a magnetic material are arranged in alternate manner in a rectilinearly moving direction of the mover 30, the ladder-shaped members 4 each holding one of the magnets 3; and a primary side (a stator 201) that includes magnetic pole pieces 1 arranged in close proximity to the secondary side from above and below in a direction perpendicular to the rectilinearly moving direction with a common coil 2 wound around each of the magnetic pole pieces 1, the primary side including a magnetic material core 11 interconnecting the magnetic pole pieces 1; wherein the ladder-shaped members 4 of a magnetic material are formed with grooves 5.

Abstract: A linear motor for optical systems, for example, endoscopes, is described. The motor has a stator with a magnetic guiding member and a coil. The armature of the motor includes two permanent magnets which are of opposite polarity. A pole piece made of soft-magnetic material is provided between the permanent magnets. By applying current to the coil, the armature can be displaced from a rest position in the longitudinal direction.

Abstract: The invention relates to a small size and lightweight linear motor having small thrust ripples, in which the magnetic attraction working between an armature and a mover is canceled out and therefore is small. A thrust generation mechanism includes a stator (3) and a mover (5). The mover (5) includes permanent magnets (4) installed in a row so that the magnetic poles at the front and backsides of the magnets are alternately reversed along the traveling direction. The stator (3) includes upper and lower pole teeth (6), (7) having a plurality of magnetic poles (2) and arranged so as to sandwich the permanent magnets (4) of the mover (5), cores for connecting the pole teeth, and a winding (1) wound around a set of a plurality of the cores. Thrust ripples are reduced by adjusting the magnetic pole pitch (Pc) of the magnetic poles (2).

Abstract: A mover, in which at each outer surface of a cornered tubular inner yoke, a flat plate magnet magnetized from inside to outside in a direction perpendicular to the outer surface, a flat plate magnet magnetized in an axial direction of the inner yoke, a flat plate magnet magnetized from outside to inside in the direction perpendicular to the outer surface, and a flat plate magnet magnetized in the axial direction of the inner yoke are alternately provided in this order, is passed through an armature in which a first single pole unit and a second single pole unit rotated by 90° with respect to the first single pole unit are alternately stacked, thus forming a linear motor. Windings are collectively wound around core portions of the first single pole unit. Positions of the magnets provided at the outer surfaces of the inner yoke are deviated from each other.

Abstract: A positioning apparatus includes a moving member, an actuator, and a controller. The moving member can move in at least a first direction. The actuator is provided along the first direction. The controller controls a current applied to the actuator in order to support the weight of the moving member. The bending rigidity of the moving member in the first direction is greater than the bending rigidity of the moving member in a second direction perpendicular to the first direction.

Abstract: An electric device including: a stator assembly; and an actuator including a coil having an axis, wherein the stator assembly includes: a stator core arranged along a linear axis, the stator core made up of a plurality of magnets each characterized by a magnetic moment, the plurality of magnets arranged in a stack along the linear axis with the magnet moments of the plurality of magnets being co-linearly aligned parallel to the linear axis, wherein the plurality of magnets includes a first magnet and a second magnet positioned adjacent to each other in the stack separated by a gap and with their magnetic moments in opposition to each other, and wherein the actuator is arranged on the stator core with the coil of the actuator encircling the linear axis with the axis of the coil parallel to the linear axis.

Abstract: A linear motor includes an assembly of two magnets separated by a non-magnetic spacer wherein the assembly is coaxially affixed inside of a housing, which results in an air gap therebetween. The magnets are positioned to have a same direction of magnetization. A first embodiment of the motor includes a coil carrier having a single electrical coil of two sections wound in the same direction and positioned into the corresponding two winding areas of the carrier. The coil carrier is movably positioned into the air gap and further to surround the assembly, thereby moving along an axial direction of the motor. A second embodiment includes two coils that wound in a same direction with the respective separated wires and positioned into the respective two winding areas of the coil carrier.

Abstract: A linear actuator includes a coil portion and a shaft portion. The coil portion includes a plurality of coils respectively applied with AC currents having different phases from one another. The shaft portion passes through an inside of the plurality of coils. The shaft portion includes: a plurality of permanent magnets and a plurality of intermediate members. The plurality of permanent magnets is arranged along a central axis C such that opposite magnetization directions face to each other in a direction of the central axis C. Each of the plurality of intermediate members is arranged between adjacent two of the plurality of permanent magnets. A saturation magnetic flux density of each of the plurality of intermediate members is higher than a saturation magnetic flux density of each of the plurality of permanent magnets.

Abstract: A mover, in which at each outer surface of a cornered tubular inner yoke, a flat plate magnet magnetized from inside to outside in a direction perpendicular to the outer surface, a flat plate magnet magnetized in an axial direction of the inner yoke, a flat plate magnet magnetized from outside to inside in the direction perpendicular to the outer surface, and a flat plate magnet magnetized in the axial direction of the inner yoke are alternately provided in this order, is passed through an armature in which a first single pole unit and a second single pole unit rotated by 90° with respect to the first single pole unit are alternately stacked, thus forming a linear motor. Windings are collectively wound around core portions of the first single pole unit. Positions of the magnets provided at the outer surfaces of the inner yoke are deviated from each other.

Abstract: A linear actuator includes an inner core, and an outer core that is provided outside the inner core in a radial direction while being supported by a pair of flat springs. Permanent magnets are formed at one of the inner core and the outer core, and magnetic pole portions are formed at the other of the inner core and the outer core to face the permanent magnet with predetermined gaps formed therebetween. Spacers are respectively provided between the inner core and the flat springs, abutting portions are respectively configured by abutting facing surfaces of the spacers and the inner core and facing surfaces of the spacers and the flat springs adjacent to the spacers in the axial direction, and a plurality of engagement portions including recesses and protrusions are arranged at the abutting portions.

Abstract: The invention concerns a linear transverse flux electrical machine (TFEM) comprising a fixed portion; and a movable portion located in respect with the fixed portion, the movable portion including an alternate sequence of magnets and concentrators longitudinally disposed about a longitudinal axis thereof; the fixed portion including at least one phase, the at least one phase including a plurality of cores cooperating with a coil disposed about the longitudinal axis, each core including a skewed pair of poles to progressively electromagnetically engage an electromagnetic field of respective cooperating concentrators. The invention is also concerned with a plurality of elements located in desired positions in the TFEM and also with a rotatable TFEM.

Abstract: The invention is an electrodynamic linear oscillating motor, which has high power densities in the magnet gap, a high efficiency, and magnetically restores the oscillating system to a center position. The linear oscillating motor has a stator system, which has at least one magnet, and an oscillating system, which is movably mounted in the magnetic field of the stator. The oscillating system has at least one core made of a soft magnetic material, and at least one driving coil. The electrodynamic linear motor combines the advantages of the known moving coil and moving magnet linear motor, achieving electrodynamic conversion levels of up to 99%. The motor is suited as a drive for refrigerating and air conditioning systems having low power and also for pumping and injection systems, and, reversing the electrodynamic principle, as a generator, such as for shock absorber systems in a motor vehicle.

Abstract: Disclosed herein is a linear, curved or rotary electric machine. The electric machine includes first and second movers which are adjacent to each other and have a phase angle difference of 60° therebetween. The first mover includes phases U, V and W and the second mover includes phases /U, /V and /W. The electric machine of the present invention can reduce pulsations of thrust caused by end effect. In particular, in the case where the stator includes permanent magnets having the same poles and salient poles which alternate with the permanent magnets, the number of permanent magnets used can be reduced to half of that of a conventional linear electric machine.

Abstract: The invention provides ironless electrical machines with internal water cooled winding between two magnet rows. The winding with internal water cooling has very high heat dissipation and continuous force. In the invented construction (the water cooling plate inside the winding between two rows of magnets), Eddy currents are low due to opposite magnetization direction of the magnets in the rows.

Abstract: A mover includes a permanent magnet array including permanent magnets magnetized in a perpendicular direction perpendicular to a motion direction of the mover such that magnetic poles having different polarities alternately appear on magnetic pole surfaces of the permanent magnets along the motion direction. A stator includes first and second magnetic pole portion assemblies disposed on both sides of the permanent magnet array in the perpendicular direction and each including magnetic pole portions facing the magnetic pole surfaces, and a single phase winding that excites the magnetic pole portions forming the first and second magnetic pole portion assemblies. The winding has a hollow structure formed by winding a winding conductor into a coil such that the magnetic pole portions included in the first magnetic pole portion assembly and the magnetic pole portions included in the second magnetic pole portion assembly are located in an internal space of the winding.

Abstract: An electric machine including: a first part, being a stator or rotor/runner, including a first segment with a first number of mutually spaced poles; a second part, being a rotor/runner or stator, including a second segment with a second number of mutually spaced poles arranged to transduce between electrical and mechanical energy by magnetic interaction with the poles of the first segment, the second segment having substantially the same length as the first segment; and permanent magnets in the poles of the first or second parts, the second number differing from the first number by one, with sufficiently deep gaps between the poles of each part to attenuate magnetic interactions between a body of each part and the poles of the other part, wherein each part is symmetrical in a direction transverse a direction of motion between the first part and the second part and transverse a depth of the parts.

Abstract: A stator core unit of a linear synchronous motor is divided into a plurality of divided cores. The divided cores each include a pair of connected portions. The pairs of connected portions are disposed along a first direct drive shaft and a second direct drive shaft to form a pair of connected portion arrays. A yoke is constituted from a pair of yoke elements which are formed of a magnetic conductive material and magnetically connect the connected portions of the pair of connected portion arrays. A first array of permanent magnets and a second array of permanent magnets are disposed to be shifted from each other by an electrical angle of 180°. A first array of windings and a second array of windings are excited with the first and second arrays of windings being shifted by an electrical angle of 180°.

Abstract: A linear motor includes a field including main-magnetic-pole permanent magnets magnetized in a direction of a generation magnetic field, and sub-magnetic-pole permanent magnets magnetized in a direction different from the direction of magnetic poles of the main-magnetic-pole permanent magnets, portions of the main-magnetic-pole permanent magnets located at a magnetic-field generation side being replaced with soft magnetic materials; and an armature including an armature core having teeth and armature coils wound around the armature cores. The linear motor satisfies ?<?, where ? is a pitch of the magnetic poles of the field, and ? is a pitch of the teeth.

Abstract: The present invention relates to a sorting system including a conveyor comprising a plurality of carts for carrying articles, in particular for sorting articles such as parcels and baggage. The conveyor has a linear synchronous motor drive system with stators arranged along a track which the carts follow. Reaction elements are mounted on each of the carts. The reaction elements each comprise an even or an uneven number of permanent magnets arranged on a plate-like carrier. The magnets on reaction elements of adjacent carts are arranged to form arrow of magnets with alternating polarity, said row having two neighboring magnets. At least one of the two neighboring magnets has a reduced dimension in the transport direction, and the two neighboring magnets are situated at a transition between adjacent carts.

Abstract: An actuator is configured to produce a displacement force between a first and a second part to displace the first and second parts relative to each other. The Actuator includes a first magnet subassembly, attached to one of a first and a second part, and an electrically conductive element, attached to the other one of the first and second part and placed near the first magnet subassembly. The first magnet subassembly includes at least one set of at least two adjacently placed magnets oriented such that their magnetic polarizations are substantially mutually opposite, and a back mass made out of a magnetic flux guiding material and connecting the magnets to guide a magnetic flux there between. The first magnet subassembly includes a carrier made of a non-magnetic-flux-guiding material, the carrier including at least one recess in which the at least one set of back mass and magnets is embedded.

Abstract: A linear motor including magnetic-pole teeth which pinch and hold permanent magnets deployed in a displacer, a plurality of iron cores used for continuously connecting the magnetic-pole teeth, windings wound around the plurality of iron cores in batch, and the displacer in which positive and negative magnetic poles of the permanent magnets are arranged alternately. A plurality of magnetic poles including the magnetic-pole teeth and the iron cores are deployed along a longitudinal direction of the displacer. The windings which are common to the plurality of magnetic poles are deployed on the iron cores. The leakage magnetic flux between the adjacent magnetic poles is reduced by making polarities of the plurality of deployed magnetic poles one and the same polarity.

Abstract: An electromagnetic moving system comprises a stator, at least one moving body and at least one controller. The stator comprised of electrically connected flat coil windings spaced apart in a series way and forming a three phase stator. Each of the coil windings has a magnetic axis substantially perpendicular to the coil winding. The moving body comprises 4 permanent magnets placed in pairs. Each pair of magnets includes two alternatively pointed and spaced apart magnets. The magnetic axes of the permanent magnets substantially parallel to the magnetic axes of the coil windings such as to cause interaction with the stator when it is powered, thus creating a force tending to propel the body along the line connected the center points of the coil windings.

Abstract: An electric device including: a stator assembly; and an actuator including a coil having an axis, wherein the stator assembly includes: a stator core arranged along a linear axis, the stator core made up of a plurality of magnets each characterized by a magnetic moment, the plurality of magnets arranged in a stack along the linear axis with the magnet moments of the plurality of magnets being co-linearly aligned parallel to the linear axis, wherein the plurality of magnets includes a first magnet and a second magnet positioned adjacent to each other in the stack separated by a gap and with their magnetic moments in opposition to each other, and wherein the actuator is arranged on the stator core with the coil of the actuator encircling the linear axis with the axis of the coil parallel to the linear axis.

Abstract: An electromagnetic, reciprocating linear motor or alternator having at least two armatures that are adjacent along an axis of reciprocation. The armatures have gaps that are linearly aligned along a gap path parallel to the axis. Field magnets reciprocate within the gap path. The field magnets include a main field magnet associated with each armature, each main field magnet having a magnetic polarization in the same direction across the gap path. A secondary magnet provides a centering spring force and is interposed between the main magnets. The secondary magnet extends in an axial direction from within a gap of one armature core to within an adjacent gap of an adjacent armature core. The secondary magnet is magnetically polarized in a direction opposite the polarization of the main magnets.

Abstract: A power generating apparatus (100) is provided with first substrates (2b, 2c) whereupon a first electrode (3) is arranged on one surface; a second substrate (1a) which includes a second electrode (6) arranged to face a first electrode on the one surface side of the first substrate; and sliding mechanisms (10, 11, 12, 13 and 14) arranged at least on the one surface side or the other surface side of the first substrate. The sliding mechanism holds the first substrate so that the first substrate moves relatively to the second substrate in a second direction (X direction) while suppressing movement of the first substrate in a first direction (Z direction).

Abstract: An electromagnetic linear motor is proposed that features a longitudinal stator, a hollow body of the stator made of a magnetically soft material, a magnetic coil of the stator, a rotor in the stator that is movable linearly relative to the magnetic coil, an axially magnetized permanent magnet of the rotor and an axially variable shape or variable magnetic material properties of the stator.

Abstract: A linear motor includes a stator having field poles arranged linearly with opposing polarities arranged in an alternating manner; and a rotor having an armature core with teeth that faces a pole face of the field poles with a gap, and coils wound around the teeth. The stator and the rotor are supported in a slidable manner, a direction perpendicular to a sliding direction of the rotor and in parallel with the pole face is defined as a stacking direction. A head of each of the teeth has an extended portion extended in the sliding direction. At least heads of the teeth arranged at both ends of the armature core along the sliding direction is divided into a plurality of areas along the stacking direction. At least one of extended portions arranged on adjacent areas is extended by a different length along the sliding direction.