Abstract: An oral hygiene device comprises a rotating body 22 mounted to a rotating shaft 21 of an electric motor 14, an output shaft 11 resiliently supported via a resonance pin 25 to be swingable finely, a drive magnetic body 23 provided on the rotating body 22, and a driven magnetic body 31 provided on the output shaft 11 to face the drive magnetic body 23 so as to be out of contact therewith. The drive magnetic body 23 and the driven magnetic body 31 are composed of permanent magnets, and as the rotating body 22 revolves, a varying magnetic field is generated between the both magnetic bodies 23, 31 to cause vibration of the output shaft 11 at high speed. In this manner, there are provided a vibration generating device, which can be manufactured at low cost and efficiently transmits vibration, and an oral hygiene device using the same.

Abstract: A cylinder of a rotary printing press is provided with a journal which is supported for rotation in an eccentric bushing. The eccentric bushing is, in turn, shiftably positioned in a lateral side frame of the printing press. The cylinder is directly driven by an electric motor. This electric motor is mounted directly on the eccentric bushing. A compensation coupling, such as a clutch is placed between the electric motor and the cylinder.

Abstract: A cage carrying two axially adjustable conductors is mounted on one shaft and a rotor is mounted on a second coaxial shaft to occupy a position between the conductors. Permanent magnets on the rotor have poles spaced by air gaps from the conductors. The air gaps are adjusted by sliding the conductors toward and away from one another along slide members on the cage by use of adjustment units engaging the conductor rotors. Alternatively, the conductors can be mounted on the rotor, and the magnets can be adjustably mounted on the cage.

Abstract: A composite electric motor shaft including axially distributed metallic and nonmetallic sections joined together exhibit increased mechanical damping, increased rotor critical speed, improved corrosion resistance and improved motor performance.

Abstract: A magnetic coupling is provided having a first shaft and a second shaft. A plurality of first magnets is in rotationally driving engagement with the first shaft and defines alternating polarity magnetic surfaces. A plurality of second magnets is in rotationally driving engagement with the second shaft and defines alternating polarity magnetic surfaces. The first and second magnet surfaces are separated by a gap so that rotation of one of the first magnets and second magnets urges synchronous rotation of the other. An electrically conductive member is in rotationally driving engagement with the second shaft and is disposed proximate to the first magnet surfaces so that rotation of the conductive member or the first magnets relative to the other induces electric current in the conductive member and urges asynchronous rotation of the other of the conductive member and the first magnets in the same rotational direction.

Abstract: A capping apparatus and a magnetic coupling assembly therefor comprises a capping head for applying a cap, a drive mechanism for driving the capping head, and a separable magnetic coupling for selectively coupling the capping head to the drive mechanism. The separable coupling is operable to selectively drive the capping head at an initial rotational speed and for selectively de-coupling the capping head from the drive mechanism while the capping head is rotating. This allows the capping head to be moved toward a container to place the cap on the container while preventing the drive mechanism from continuing to drive the capping head as the cap is placed on the container.

Abstract: A compound shaft coupling having a flexible disk shaft, with two flexible disks or diaphragms, and a tie bolt shaft connecting two rigid or stiff shafts. One flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the first stiff shaft, while the other flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the tie bolt shaft which removably mounts the second stiff shaft. A quill shaft connects the two flexible disk diaphragms of the flexible disk shaft. The first stiff shaft can be a hollow sleeve with a magnet mounted therein and the second stiff shaft or power head shaft may include a compressor wheel, a bearing rotor, and a turbine wheel removably mounted on the tie bolt shaft.

Abstract: Three magnetically cooperating parts are movable relative to one another, one part being provided for connection to a drive shaft, one part being provided for connection to an output shaft, and one part being provided as a stationary part. A first part surrounds a second part, these parts having permanent magnets which alternately exhibit north poles and south poles along the circumference. The third part comprises a yoke surrounding the first part, which yoke serves as a magnetic return element, and which has magnetically conductive teeth at the inner side of the yoke.

Abstract: The DC motor according to the present invention includes one radial ball bearing and a thrust bearing constituted by a shaft receiving member provided on a housing to be abutted by one end of a rotating shaft. Further, a magnetic and/or a spring bias force is applied to the rotating shaft to supplement thrust load bearing force of the thrust bearing. Compared with conventional DC motors in which a rotor is supported by a shaft through a pair of ball bearings which are axially spaced apart from each other, the present invention enables reduction of the overall motor height without harming the rotational stability while simultaneously achieving low production cost.

Abstract: A starter has a housing formed with a fitting part and a flange on the outer periphery thereof. The fitting part is in circular shape when viewed in the axial direction and is press-fitted, in the socket-and-spigot joint manner, into a fitting hole of an engine-side body with the flange being in abutment with a fitting plane of the engine-side body. The outer diameter Ho of the fitting part is set larger than the axial length of the center of gravity of an armature of a starter motor from a fitting plane of the flange.

Abstract: A position of a second permanent magnet with respect to a first permanent magnet is defined by assembling a driving side support member, a thrust bearing, a spacing member, a radial bearing, and a driven side support member. The first and second permanent magnets are respectively held on the driving side support member and the driven side support member. Accordingly, variation of a magnetic gap between the first and second permanent magnets can be reduced. Variations in assembling the parts hardly affect the variation of the magnetic gap.

Abstract: An improved connection coupling for providing rotary motion from an electric motor rotor to a load wherein a mechanical coupling element is attached to an end of the rotor and to the shaft of the load. The free end of the rotor includes a cavity which extends axially from the end surface of the rotor inward to allow for insertion of a portion of the mechanical coupling element in the cavity. The walls of the cavity do not contact the portion of the mechanical coupling element to allow this mechanical coupling element to move freely in the rotation direction.

Abstract: The soft start of a permanent magnet coupler of the type in which magnetic flux from permanent magnets on a rotary magnet rotor bridges an air gap between the magnets and an electroconductive element on a rotary conductor rotor to magnetically couple said rotors together responsive to relative rotary motion between said rotors, is adjusted by changing the amount of flux which bridges the air gap. This is accomplished by attracting some of the flux to magnetic material selectively positioned on said magnet rotor adjacent one or more of said magnets.

Abstract: A magnetic transmission coupling includes an inner torque tube (62) carrying one or more stacks of annularly disposed spaced magnets (70), located within a sealing membrane element (38), and an outer, eccentric drive rotor (74) with a matching one or more stacks of annularly disposed spaced magnets (70). Rotary drive is transmitted across the membrane by rotating the drive rotor which causes the inner torque tube (62) to be driven. The torque tube (62) has an unusually large bore diameter through which an elongate stiff tube (52) may pass.

Abstract: An adjustable coupler has a group of magnet rotors separated by air gaps from a group of conductor rotors. The air gaps are adjusted by axial movement of one of the groups relative to the other to vary the slip of the coupler and achieve a constant load speed at various load torques.

Abstract: A self holding type connecting device comprising an armature which is disposed movably in an axial direction, a magnetic path member having a cross section formed along a closed loop and having an axial space wherein axial movement of the armature is permitted, a permanent magnet secured to the magnetic path member and forming two kinds of magnetic flux which pass through the armature and the magnetic path member, an electric magnetic coil which forms magnetic flux for moving the armature in an axial direction against the two kinds of magnetic flux, and switch for switching direction of the magnetic flux from the electric magnetic coil. In the device, decrease of connecting force due to abrasion of pads does not occur and power consumption can be remarkably reduced.

Abstract: A vibration generator for generating directed vibrations in a compacting device includes a housing and a first and second flyweight shafts rotatably supported in the housing and extending parallel at a distance to one another. The flyweight shafts have a respective flyweight connected thereto. A first and second intermediate shafts are rotatably supported in the housing and extend parallel to and between the first and second flyweight shafts. Gear wheels positive-lockingly connect the first and second intermediate shafts to one another, the first intermediate shaft to the first flyweight shaft, and the second intermediate shaft to the second flyweight shaft. In this manner, the first intermediate shaft and the first flyweight shaft, respectively, the second intermediate shaft and the second flyweight shaft rotate in opposite directions. One of the intermediate shafts has connected thereto two gear wheels, with one being coupled to the first flyweight shaft and another coupled to the second flyweight shaft.

Abstract: A geared electric motor 1 used for power window apparatuses, for example, which is provided with an mature 7 having an armature shaft 7a, an output shaft 8 connected with the armature shaft 7a through a worm gear pair (7a7 and 17) and two friction plates 9 and 10 to be in contact with both end faces of the armature shaft 7a. The armature shaft 7a of this motor 1 is prevented from rotation by frictional resistance generating between the friction plates 9, 10 and the armature shaft 7a even if the output shaft 8 is applied with rotatory force.

Abstract: An electromagnetic torque coupling, particularly for connecting a torquing tool to a motor, for applying a predetermined torque to the tool; the joint presenting a pair of axial rotors fitted idly, coaxially in tandem, and mechanically disconnected from each other inside a casing, and respectively connected to the motor and the tool; the two rotors presenting respective opposite disk-shaped ends defined by respective opposite front faces facing each other and separated by a predetermined axial clearance, and surrounded radially on the outside by an electromagnet fitted to the casing, so that the disk-shaped ends are immersed in a predetermined magnetic field, the flux lines of which are linked via an air gap defined by the predetermined axial clearance; the front faces each presenting a respective ring of radial face teeth; the teeth in each ring presenting ridges defined by respective coplanar, flat face surfaces defined by annular wedges; and the axial clearance being defined between the surfaces of the tee

Abstract: A completely novel rotary apparatus is provided which can rotate a composite rotor at a high speed by utilizing the magnetic force, the composite rotor being comprised of a plurality of ring-shaped rotors arranged concentrically with each other.

Abstract: A concentric-double-shaft simultaneously rotating apparatus in which a part of the force for driving an inner shaft to rotate is obtained by a device other than a rotation controlled motor to thereby reduce the capacity of the rotation controlled motor to attain reduction in size of the apparatus, increase of stiffness, and so on. The concentric-double-shaft simultaneously rotating apparatus includes at least one permanent magnet which is attached onto an inner circumferential surface of an outer shaft, and a secondary conductor such as a copper pipe, or the like, is provided on an outer circumferential surface of the inner shaft to create an induced current flow.

Abstract: A conductor rotor presents a pair of electroconductive rings spaced apart to receive magnet carrying shoes with permanent magnets to induce eddy currents in the rings and thereby retard rotation of the conductor rotor. The shoes are moved in and out in a controlled manner to move between a retracted brake-off position and an extended brake-on position.

Abstract: The present invention relates to a system for driving two mechanical members in rotation about an axis by magnetic coupling of the attractive type, the system comprises respective magnetic elements secured to each of said mechanical members, the two magnetic elements being concentric, one of them being made up of two identical magnetic rings of minimum radius R.sub.3 and of maximum radius R.sub.4, and the other one of them being made up of a magnetic ring having a minimum radius R.sub.1 and a maximum radius R.sub.2, with its midplane perpendicular to the axis of rotation being offset by a distance d from the midplanes of each of said two identical rings. Each ring possesses magnetization in a direction contained in a plane that is perpendicular to the axis of rotation. Each ring also possesses N magnetic poles uniformly distributed around said axis of rotation. The ratio 2d/.vertline.(R.sub.3 +R.sub.4)-(R.sub.1 +R.sub.2).vertline. lies in the range 0.2 to 0.8.

Abstract: A wheel motor for a vehicle is provided in which an electric motor is arranged in a central space defined in a wheel, to rotatably drive the wheel. A gear reducer is also arranged in the central space of the wheel, which has a plurality of gears including a final stage gear having an axial through hole formed therein. The electric motor includes a housing fixed to the vehicle body, a stator secured to the housing, a rotor rotatably fitted in a central space defined in the stator to generate the rotative driving force during rotation thereof, and an output shaft connected to the rotor through the gear reducer as well as to the wheel to be rotatively driven by the rotor, for transmitting the rotating output from the rotor through the gear reducer to the wheel. The output shaft extends through an axial through hole formed in the final stage gear of the gear reducer and an axial through hole formed in the rotor, and is rotatably supported by opposite end portions of the housing.

Abstract: A magnetic coupling device has an electroconductive rotor presenting a band of electroconductive material and has a magnet rotor with permanent magnets which are slide-mounted to move radially outward responsive to centrifugal force in opposition to a spring bias. When the magnet rotor is stationary the magnets are radially inward of the orbit of the electroconductive band, and when the magnets have moved outwardly when the magnet rotor is rotating, the magnets are spaced by an air gap from the electroconductive band so that eddy currents are induced in the band resulting in coupling of the rotors. The electroconductive rotor preferably has two such bands positioned on opposite sides of the magnet rotor. The rotors may have sheaves mounted thereon.

Abstract: A synchronous motor/generator is modified by mounting the conventional rotor on a sleeve that rotates freely on the main shaft rather than being fixedly mounted on the shaft. Limits to this rotation are incorporated in the design such that the maximum angular rotation of the rotor on the shaft equals half the stator advance that occurs during a complete full cycle of the AC stator winding voltage. In addition to smoothing transients, this configuration permits the machine to smoothly drop into the correct stator/rotor flux phase when it changes from a motor to a generator, and back into the correct phase for a motor, when the AC power is interrupted, and subsequently resumes, resulting in dropping a single cycle.

Abstract: A magnetic coupler has a magnetic disc containing permanent magnets located between two electroconductive plates and separated therefrom by air gaps. The magnetic disc and electroconductive plates are mounted on coaxial or parallel-spaced input and output shafts so that rotation of the input shaft causes rotation of the output shaft by way of magnetic friction between the permanent magnets and the electroconductive plates.

Abstract: An improved startup device for the rotor of a permanent-magnet synchronous motor, particularly adapted for liquid conveyance pumps, such as those used in electrical household appliances or the like, which are equipped with a permanent-magnet synchronous motor of the type comprising a stator unit with a pack of metal laminations and electrical windings supported by a body that forms a substantially cylindrical chamber that accommodates, upon assembly, the rotor unit, which is axially crossed by a motor shaft.

Abstract: A magnetic drive arrangement comprising a plurality of magnetically cooperating parts which are moveable relative to one another, one of the parts being connected to a drive shaft and one of the parts being stationary, the fields produced by the permanent magnets being modulated by soft-magnetic flux-carrying parts which include at least one toothed iron yoke, wherein structures are provided on both sides of the iron yoke to generate magnetic fields by means of permanent magnets at the sides facing the iron yoke, with the magnetic fields alternatively exhibiting north poles and south poles along the circumference.

Abstract: A rotation detecting device for vehicle speedometers includes a housing, a magnetic induction device, and a magnetized rotor near the magnetic induction device. The rotor is connected through a coupling to a rotation source. A braking device forms a magnetic circuit between one end surface of the rotor and the housing, and brings the rotor into pressure contact with the housing by a magnetic attraction force generated in the magnetic circuit. Accordingly, a stable and proper braking torque can be applied against rotor vibration, to prevent a false output signal while idling. Furthermore, the amount of wear of a bearing for rotatably supporting a rotating shaft of the rotor can be reduced to improve durability of the rotation detecting device by reducing the braking torque during high-speed rotation of the rotor.

Abstract: A compact assembly of two magnetic couplers for coupling two coaxial angular shaft movements through a vacuum barrier. Each coupler includes two concentric rings of radially oriented magnets, arranged to provide magnetic coupling in a radial direction between corresponding magnets in the rings. A relatively large number of magnets in each ring ensures stiff coupling between rings, but unwanted circumferential coupling between adjacent magnets in each ring is minimized by the presence of a flux ring associated with each ring of magnets. The flux rings provide a return path for radial magnetic flux lines between the rings. Cross-coupling between the couplers is minimized by the presence of a magnetic shield on each ring of magnets. The shields permit the couplers to be located in close proximity on their common axis of rotation. For corrosion resistance, each ring of magnets on the vacuum side of the barrier is housed in a stainless steel enclosure.

Abstract: An adapter for rapid attachment and removal of a flanged motor on a power driven appliance. A bracket attaches to the appliance and cooperatively receives the motor flange. Pins incorporating clips or expanding projections then secure the motor to the appliance. A shaft-to-shaft connector is then secured in place on the shafts, thus coupling the motor output shaft and appliance power input shaft. The connector may include pins inserted through aligned bores in the connector and the shafts. In a preferred embodiment, the connector may comprise mating forward and rear components sandwiching a resilient member therebetween, which arrangement accommodates minor angular and parallel misalignment. In other alternative embodiments, the connector comprises a splined collar slidable over splined output and input shafts, and a clutch and drum arrangement. For belt driven appliances, the motor output shaft terminates in a pulley, or is coupled to a shaft having a pulley and attached to the appliance.

Abstract: A magnetic feedthrough manipulator adapted to be sealed to a chamber for inserting a manipulator shaft capable of rotational and longitudinal movement. The shaft is axially coupled to a ferromagnetic armature having an even number of longitudinal surface splines freely movable within a nonmagnetic tubular housing and which is controlled by alternately polarized magnets in a frame that slides and rotates on the outer surface of the housing. Two or more manipulator shafts may be controlled independently by a like number of armatures in the same housing.

Abstract: A method for transferring power employs moving a magnetic field past a nonmagnetic electrical conductor surface. In one instance, a magnet is mounted on a rotational axis, with the periphery of the magnet in close proximity to the object. The object may also be on a rotational axis. Rotating of the magnet causes rotation of the object. In another instance, an aluminized layer is placed on a conveyor belt. The rotating magnet is positioned closed to the conveyor belt layer to cause the conveyor belt to move.

Abstract: A constant-torque single-phase electromagnetic actuator including a stationary device including a first magnetic stator circuit made of a high-permeability material and excited by at least one field coil (10), and a movable device (1) including an axially magnetized disc (3) having 2N pairs of magnetic poles magnetized in alternate directions, wherein the magnetization is substantially uniform. The magnetized disc (3) is attached to a second magnetic circuit (6) made of a high-permeability material, and the movable device is provided with a coupling shaft (7). The connection between the stationary device (1) and the movable device (2) allows at least some axial play of the coupling shaft (7) away from the stationary stator device (2), and the diameter of the magnetized disc (3) is substantially identical to that of the poles of the stator circuits. Play between the stationary (2) and Movable (1) devices is compensated by the magnetic attraction exerted by the stationary device on the movable one.

Abstract: A hysteresis coupling comprising a magnetic cylinder (1) made of a permanent-magnetic material and a thrust ring (4) made of a hysteresis material. The thrust ring (4) is fixedly connected to a thrust ring holder (5) and separated from the magnetic cylinder (1) by an air gap (3). The hysteresis coupling transmits the torque from a drive (7) to a pinion (9) which is part of the thrust ring holder (5). The thrust ring (4) is surrounded on its outside by non-magnetic material of high density in order to increase the moment of inertia (5) for noise reduction.

Abstract: A magnetic coupler has a magnetic disc containing permanent magnets located between two electroconductive plates and separated therefrom by air gaps. The magnetic disc and electroconductive plates are mounted on coaxial or parallel-spaced input and output shafts so that rotation of the input shaft causes rotation of the output shaft by way of magnetic friction between the permanent magnets and the electroconductive plates.

Abstract: A magnetic coupler has a magnetic disc containing permanent magnets located between two electroconductive plates and separated therefrom by air gaps. The magnetic disc and electroconductive plates are mounted on coaxial or parallel-spaced input and output shafts so that rotation of the input shaft causes rotation of the output shaft by way of magnetic friction between the permanent magnets and the electroconductive plates.

Abstract: A braking system adapted to be used on the drive shaft of a vehicle has a rotor containing permanent magnets mounted on the shaft and preferably has a pair of non-rotary electroconductive plates separated by air gaps from the rotor on opposite sides thereof. The plates are slide mounted in a controlled manner on the vehicle chassis to vary the air gaps between brake-on (relatively narrow gap) and brake-off (relatively wide gap) positions.

Abstract: A drive unit with an electric motor (2) for operating a plurality of adjusting devices and axially displaceable coupling elements, in particular for two adjusting devices for a vehicle seat. An electric motor (2) has a motor shaft (20) consisting of a hollow shaft (21) and an axially displaceable interior shaft (22) received therein in a manner fixed against relative rotation which can be connected on both sides, which can be selectively connected in a manner fixed against relative rotation with associated coupling elements (41, 42) of the adjusting devices by coupling elements (23', 24') on the motor side.

Abstract: A compact assembly of two magnetic couplers for coupling two coaxial angular shaft movements through a vacuum barrier. Each coupler includes two concentric rings of radially oriented magnets, arranged to provide magnetic coupling in a radial direction between corresponding magnets in the rings. A relatively large number of magnets in each ring ensures stiff coupling between rings, but unwanted circumferential coupling between adjacent magnets in each ring is minimized by the presence of a flux ring associated with each ring of magnets. The flux rings provide a return path for radial magnetic flux lines between the rings. Cross-coupling between the couplers is minimized by the presence of a magnetic shield on each ring of magnets. The shields permit the couplers to be located in close proximity on their common axis of rotation. For corrosion resistance, each ring of magnets on the vacuum side of the barrier is housed in a stainless steel enclosure.

Abstract: An adapter for manual attachment and removal of a flanged motor on a power driven appliance. A bracket attaches to the appliance and cooperatively receives the motor flange. Pins incorporating clips or expanding projections then secure the motor to the appliance. A shaft-to-shaft connector is then secured by similar pins, thus coupling the motor output shaft and appliance power input shaft. For belt driven appliances, the motor output shaft terminates in a pulley, or is coupled to a shaft having a pulley and attached to the appliance. Optionally, a belt tensioning pulley is included.

Abstract: A magnetic drive device comprising a rotor disposed inside a cylindrical wall so as to be rotatable and axially movable, a fixed magnetic bearing fixedly provided on the cylindrical wall for holding the rotor radially thereof, a magnetic coupling having a drive portion disposed around the cylindrical wall so as to be rotatable and axially movable for transmitting a torque and an axial holding force to the rotor, and a movable magnetic bearing disposed around the cylindrical wall so as to be axially movable with the drive portion of the magnetic coupling for holding the rotor radially thereof.

Abstract: An encoder interface for interfacing an encoder having a first part defining a first axis to a structure having a second part defining a second axis substantially parallel to the first axis includes a portion for translating the first part with respect to the second part in a direction transverse to the first axis and a portion for rigidly rotationally stabilizing the first part with respect to the second part against a rotation of the first part about the first axis induced by a translation of the first part with respect to the second part in the direction transverse to the first axis.

Abstract: A method and device for precisely driving a rotary object includes a motor ounted in a housing and a reduction device comprising first and second harmonic drives, which connect the motor to the object to be driven via an output shaft. The output shaft is connected to the object to be driven via an adapter cup and a bellows which is stiff in torsion but which tolerates misalignments between the drive device and the object. All elements are designed to maximize stiffness and precision and to minimize backlash while maintaining maximum concentricity between the elements.

Abstract: A magnetic drive device comprises a hollow cylindrical outer rotor, an inner rotor inserted in the outer rotor so as to proejct at least at one end thereof beyond an end of the outer rotor and supported rotatably relative to the outer rotor, two magnetic bearings arranged around the outer rotor and spaced apart axially thereof for holding the outer rotor radially thereof, a first magnetic coupling having a drive portion disposed around the outer rotor for transmitting a torque to the outer rotor, and a second magnetic coupling having a drive portion disposed around the inner rotor at a portion thereof projecting beyond the end of the outer rotor for transmitting a torque to the inner rotor.

Abstract: A permanent magnet coupling including a rotatable inner member 32, and outer member 12 rotatable about the same axis 14 as the inner member 32, a plurality of magnets 36 each having a nominally trapezoidal cross section, and a plurality of interpole members 34 each having a nominally trapezoidal cross section. The interpole members 34 are disposed circumferentially between adjacent magnets 36. The major bases 38 of the magnets 36 are located on the sleeve-like cylindrically-shaped iron core 16 of the inner member 32. In operation, the side surfaces 48,50 of the permanent magnets 36 wedge between the side surfaces 42 of the interpole members 34 by centrifugal force. This, in turn, prevents the magnets 36 from moving under static or dynamic conditions. Thus, the interpole members 34 restrain the magnets 36 in a similar fashion as the containment ring 30 generally without requiring a containment ring 30.

Abstract: The brushless signal transmitting device comprises a rotor; a fixed housing for rotatably supporting the rotor; at least one gear in mesh between the rotor and the fixed housing; an intermediate member disposed between the rotor and the fixed housing and rotatable in synchronism with and in the same direction as the rotor at a predetermined speed reduction ratio via the gear; a guide roller supported on the intermediate member; and a flexible wiring member connected between the rotor and the fixed housing. The wiring member is wound up around the rotor counterclockwise, for instance, and then returned via the guide roller so as to be wound up around the intermediate member clockwise. Since the intermediate member is larger in diameter but smaller in rotative speed than that of the rotor, it is possible to reduce the length of the flexible wiring member required to rotate the rotor by a predetermined number of revolutions of the rotor.

Abstract: A powered display is mounted on a shopping cart (12'") and powered by movement of the shopping cart. In one preferred embodiment of the present invention, the powered display includes an electronic display (260). Rotational power from a wheel (22'") of the shopping cart is transmitted through a bowden cable (16'") to a generator (262). The generator converts the rotational power to electrical energy to power the electronic display.

Abstract: A displacement armature motor is formed such that the deformation element allows a larger axial shifting and displacement path of the displacement armature while requiring a lower construction precision. The deformation element includes two frames (17, 17a). The frame (17a) is connected via two of its corner attachment positions (17b) to an attachment plate (19). The attachment plate (19) is connected to an extension (31) of the displacement armature. The frame (17) is connected with two of its attachment positions to the carrier arms (15a) of the support ring (15). The two frames (17, 17a) are connected to each other with their respective remaining corner attachment positions (17c) via a transfer element (18).