Abstract: A vibration mechanism includes a repulsive magneto-spring made up of at least two permanent magnets 22, 24, 36, 38. In this vibration mechanism, the spring constant of the magneto-spring is set to approximately zero by appropriately selecting the relationship of one of the permanent magnets 22, 24, 36, 38 relative to the other.

Abstract: An electromagnetic brake provided with a braking force receiving bracket for receiving tangent force of a pair of brake shoes reciprocating in approaching and parting directions mutually. The braking force receiving bracket is fixed to a fixation member, slide faces, which receive side faces of the pair of brake shoes as the brake shoes can slide, are provided on inner sides of the above bracket, and the above pair of brake shoes are surrounded by the bracket.

Abstract: The present invention relates to a method and a device for actuating an electromechanically operable parking brake which includes a brake unit and an electrically driven actuator which actuates the brake unit, and wherein electric current is delivered to the actuator for locking and/or releasing the parking brake. One important feature of the present invention is that the current delivery for the actuator is basically interrupted at least one time during the locking and/or releasing operation.

Abstract: An electromagnetically actuated brake is provided comprising a magnetic body, which can energized electromagnetically to produce a magnetic force, and a brake rotor which is mounted on a shaft, in particular the drive shaft of an electric motor, in a rotationally stable manner, so that the shaft can be braked. A spring-loaded armature plate is mounted on the shaft and is movable axially parallel to the long axis of the shaft by the magnetic force produced in the magnetic body against the force of its spring loading whereby in a braked state the armature plate is apposed to the braking surface of the brake rotor. Disposed between the armature plate and the magnetic body or between the armature plate and the brake rotor are first and second dampers to attenuate oscillations of the brake. The first and second damper are located adjacent one another in the axial direction of the shaft and each comprises a material different from that of the other.

Abstract: A mechanism is designed to effect a resistance and is formed of a support frame on which a braking wheel, an excited magnetic disk and an excited magnetic coil are mounted by a fastening shaft. The excited magnetic disk has an induction surface and a shaft seat over which the excited magnetic coil is fitted. The induction surface of the excited magnetic disk is provided along the fringe thereof with a plurality of magnetic poles serving as eddy current induction areas at the time when the excited magnetic disk and the braking wheel interact. The eddy current and the magnetic flux interact to effect a reverse rotation moment opposite in direction to the rotation of the braking wheel.

Abstract: A spring-set, electromagnetically released brake that requires a relatively small amount of current to release is provided. The brake includes a magnet shell disposed about a first axis. The shell includes a radially outwardly extending pole. The brake also includes an armature disposed radially outwardly of the pole and pivotable at a first axial end and a first engagement element, such as a brake shoe, coupled to the armature proximate a second axial end of the armature. The brake further includes a spring disposed about the pole. The spring biases the armature radially outwardly to urge the first engagement element towards a second engagement element such as a friction surface in a brake drum. Finally, the brake includes a coil disposed about the pole and means for selectively energizing the coil to urge the armature radially inwardly and the first engagement element away from the second engagement element. A bobbin for use in the brake is also provided.

Abstract: A permanent magnet brake mechanism comprised of a permanent magnet, a guide ring, bearings inside a neck, a single-direction flywheel assembly of a rotatable outer hub disposed adjacent to the neck, a main shaft inserted through the bearings mounted in the rotatable outer hub, a sliding seat sleeved onto the main shaft and that is situated within the interior spatial confines at one side of the outer hub, a return spring installed at the exterior side of the sliding seat and on the main shaft that is also situated between the main shaft and the sliding seat, a brake line that is connected to the sliding seat and, furthermore, controls the movement of the sliding seat, and a guide key at interior side of the brake line that provides for the positioning of a mounting frame when the sliding seat slides along the main shaft.

Abstract: A method for the controlled power activation of an electromechanical braking system in a motor vehicle where the maximum power available is less than the nominal capacity includes the step of activating brake force-generating units of the braking system individually or in subgroups in succession to one another. The brake force-generating units are in each case activated with a power level corresponding to a portion of the maximum power available. The portion of the maximum power available is sufficient for the individual unit to function at least partially.

Abstract: A device for effecting resistance is incorporated into an exercise or rehabilitation machine and is formed of an excited magnetic cylinder, an excited magnetic coil, a rotary cylinder, and two support frames. As the excited magnetic coil is connected to the alternating current power source in conjunction with a control switch, the exercise or rehabilitation machine is provided with a magnetic resistance of a predetermined magnitude. The excited magnetic cylinder is provided in one side with an annular wavy magnetic interstice for guiding the magnetic line toward the rotary cylinder, thereby resulting in a magnetic resistance causing the fixed excited magnetic cylinder and the rotary cylinder to attract each other. The rotary cylinder is connected to a link device of the exercise or rehabilitation machine, so as to provide the exercise or rehabilitation machine with a resistance.

Abstract: For an electromagnetically actuated brake, in particular a stopping brake, having a high stopping moment and short braking paths and consisting of a cam disc (3) which is guided in a torsion-proof manner, a spring (4) which presses the cam disc axially into the locking position, and an electromagnet (5, 6, 7) which unlocks the cam disc against the spring (4), it is proposed that the axially movable cam disc (3) be of ferromagnetic construction and that a number of cams (31) be provided which engage, in a form-locking manner, in the recesses (11) in the rotatable part (1) to be braked, the cams (31) and recesses having flanks standing perpendicularly to the direction of rotation and the spring being constructed as a leaf spring (4) with three bending arms which act upon the face of the cam disc (3) at an equal distance from one another.

Abstract: An electromechanically actuatable brake, in which a brake lining is pressed by an electric motor against a brake disk via a threaded roller drive. To enable releasing the brake in the event of a malfunction, a nut of the threaded roller drive is braced axially via a self-locking-free spindle, which is blocked against relative rotation by a permanent magnet brake, the permanent magnet brake is releasable by supplying current to the permanent magnet brake. When the permanent magnet brake is releasable by having current supplied to it, the brake lining pressed against the brake disk sets the spindle, forming the bracing means, into rotation and presses the entire threaded roller drive away from the brake disk and as a result the brake is released.

Abstract: The electromagnetic hysteresis brake, especially a yarn brake for textile machines, comprises a stationary brake magnet (1), which consists of inner and outer pole ring parts (2, 3) and a magnet winding (4), and a rotating armature (8), which is connected to a hysteresis ring (7) of permanent magnetic material. The hysteresis ring (7) projects into an annular air-gap (6) of the brake magnet (1), which is formed between the inner and outer pole ring parts (2, 3). At least one permanent magnet (5) is so arranged adjacent the magnet winding (4) that the magnetic field in the air-gap (6) is formed by cooperation of the magnetic fluxes of the electromagnet (4) and the permanent magnet (5). The magnetic flux of the electromagnet (4) can be adjusted in magnitude and direction in the gap by corresponding poling that it assists or counteracts the magnetic flux of the permanent magnet.

Abstract: A movable magnet support tube and a stationary magnet support tube are aligned coaxially within a brake drum coupled to a rotational shaft. An array of magnets are supported at equal intervals on the outer surfaces of the magnet support tubes and proximal surfaces of ferromagnetic pole pieces are fixed to magnetic pole surfaces at ends of the magnets which are aligned annularly. Extreme end surfaces of the ferromagnetic members are juxtaposed to an inner peripheral surface of the brake drum and an actuator reversibly rotates the movable magnet support tube.

Abstract: A magnetic device intended for use in an exercise bicycle or the like comprises a main body, a spindle mounted on the main body, two disks mounted on the spindle at an interval and provided with a plurality of magnets, and a threaded rod for adjusting the distance between the two disks so as to adjust the magnitude of resistance force by controlling the magnetic flux density between the two disks.

Abstract: The present invention discloses an electromechanically operable disc brake for automotive vehicles which comprises a floating caliper as well as an actuating unit arranged on the caliper. The actuating unit includes an electric motor which, by the intermediary of a reduction gear, readjusts an actuating element which is used to move one of two friction linings that are slidable in the brake caliper into engagement with a brake disc. To permit an individual adjustment of the desired brake force, especially for use of the disc brake in an automotive vehicle, according to the present invention, a force-measuring device (23) is interposed in the flux of force between the caliper (1) and the actuating unit (2), and the output signals of device (23) are adapted to be sent to a control circuit (26) that influences the current supplied to the electric motor (6), and/or the voltage.

Abstract: An improved braking apparatus having a jaw type clutch coupled to an electrical solenoid through a ball spline mechanism provides significantly greater braking capacity in a given volume than other types of braking devices. The ball spline is configured to significantly reduce the internal friction load which the electrical solenoid must overcome to apply or release the brake, resulting in a smaller physical size and current draw of the solenoid. The jaw clutch and ball spline are also configured to reduce or absorb shock loads on various internal components of the braking apparatus when the brake is engaged. By configuring the ball spline and jaw clutch to function as shock absorbers in addition to performing their primary functions, the need for separate elastomeric shock absorbers, etc., is eliminated.

Abstract: A magnetorheological brake includes an outer, rotating flywheel member having a hollow interior space, and an inner fixed member disposed in the hollow interior space. The inner fixed member is sized so that a working space is provide between the surfaces of the fixed member and the inner wall of the rotating member. A controllable medium of magnetically permeable metal particles is disposed in the working space. A field generator is mounted in the interior space to the fixed member to selectably generate a field acting on the outer and inner members and the controllable medium in the working space. The rheology change in the medium produced by the field generates resistance to rotation of the outer member about the inner member. A device according to the invention may be used as a flywheel/brake or resistance-generating device in exercise equipment, rotating equipment, such as conveyors, and vehicles.

Abstract: A spring-actuated electromagnetic brake includes a noise-suppressing device for suppressing a striking noise emitted when an armature is attracted onto a field to release the brake when an electromagnetic coil is excited to magnetize the field. The noise-suppressing device is comprised of a plurality of hemispherical elastic members each disposed in one of recesses formed in one of two opposed surfaces of the field and the armature. When the brake is in the engaged state, a hemispherical surface of each elastic member partially projects from the recess and is in contact with the other of the two opposed surface. When subjected to a compressive force or pressure applied from the armature, the hemispherical elastic member undergoes elastic deformation as a whole and does not produce any locally concentrated elastic deformation. The hemispherical elastic member is highly durable and is able to greatly suppress the striking noise generated when the brake is released.

Abstract: A vehicle braking system including a magnetically permeable rotatably mounted brake drum; an annularly distributed magnetic source generates a magnetic field within the brake drum; a control for selectively applying the magnetic field to the brake drum; a drive shaft rotatable during movement of the vehicle; and a rotational speed enhancing coupling between the brake drum and the drive shaft.

Abstract: An electromagnetic brake includes an improved friction disk that has at least one friction surface formed entirely from a rubber material such as a styrene butadiene rubber material. The rubber material 1) has a high coefficient of friction, 2) conforms to the shape of the mating braking surfaces, 3) is dimensionally stable so as not to unnecessarily widen the air gap of the brake when the brake is applied, and 4) exhibits acceptable wear characteristics. The rubber material also preferably does not exhibit a sharp reduction in coefficient of static friction when it is heated, e.g., due to friction from its mating surfaces and/or due to heat transfer from the electric motor or other braked element. The resultant brake is relatively light-weight, compact, and inexpensive. It is particularly well-suited for use as a static, park-and-hold brake for an electric motor or the like.

Abstract: A spring-actuated electromagnetic brake includes an adjustment plate attached a rotating shaft and having an annular recess in one end face thereof facing a boss of a brake plate slidably mounted on the rotating plate. An annular elastic member is disposed in the annular recess in such a manner that when the brake is in the released state, the elastic member partially projects from the recess and is in contact with an end face of the boss. A slide-distance adjustment bolt having an enlarged head and a thread-free shank of a length larger than the thickness of the adjustment plate extends through an opening of the adjustment plate and is threaded on the end face of the boss. The brake plate is slidable in one direction by the force of the brake spring and in the opposite direction by the recovery force of the elastic member. The range of sliding movement of the brake plate is determined by the difference between the length of the shank of the bolt and the thickness of the adjustment plate.

Abstract: A brake mechanism includes an inner assembly secured to a motor shaft and an outer assembly surrounding the inner assembly. The outer assembly includes a permanent magnet or an electromagnet between a pair of ferromagnetic pole structures. The inner assembly also includes a pair of ferromagnetic pole structures. During operation of the brake mechanism, the inner assembly is rotated relative to the outer assembly, and the pole structures cause a magnetic field within the inner assembly to pulsate. The pulsating magnetic field causes the inner assembly to apply a braking torque to the shaft.

Abstract: A motor brake apparatus includes an improved torque adjustment mechanism. The adjustment mechanism includes an adjusting nut having a outer ring groove aligned with an inner ring groove defined in a receiving bore of the brake housing structure. A snap ring is located in the aligned grooves to connect the housing structure and adjusting ring while allowing free rotation therebetween. Inner threads of the adjusting nut engage outer threads of a spring pushing element such that rotation of the adjusting nut causes axial movement of the pushing element. The pushing element engages one or more springs which are thereby compressed or released, depending on which axial direction the pushing element is moved. The spring force varied in this manner results in varying levels of braking torque.

Abstract: A powered system which would include a motor, a shaft rotated by the electrical motor, and a work piece on the end of the shaft which would impart rotation or movement to a part. There is then provided a bushing, which would rotate in unison with the rotating shaft, and an armature plate engaged around the rotating bushing which would impart rotation to the armature plate in normal working conditions. Secured adjacent the rotating bushing and armature plate, there would be further included a bearing-mounted and field magnet assembly, known in the art, so that when the bearing mounted assembly is electrically engaged, the magnet portion of the magnet assembly would be energized, thus moving the rotating armature plate to engage against the stationary magnet face, which would immediately stop rotation of the armature plate. Because the bushing is engaged in the armature plate, the bushing would likewise be halted in its rotation as would the shaft of the motor.

Abstract: The present invention relates to a brake device with a combination of power-generating and eddy-current magnetic resistance having an outer ]-shaped fly wheel fastened on a central axle of a frame and fitted with a permanent magnet on the inner circular edge to form a rotor type, and the fly wheel is connected with a stator core fastened on the frame; moreover, one end of the central axle is stretching out of the frame and fitted with a belt wheel; the front end of the frame is fitted with a brake core adjacent to the outer edge of the fly wheel to supply a planned eddy current magnetic resistance to the fly wheel; in accordance with such design, the device generates power by means of the exercise force of users to drive the fly wheel to rotate, after passing through a DC power supply, it provides display & controlling gage with power source so that the power-generating and the eddy current magnetic resistance are integrated to reach the effect of reducing the volume and the producing cost.

Abstract: The invention concerns an amusement device (1) with one or several passenger carriers (2) and a framework (3). It is preferably designed as dropping framework. To brake down the movable passenger carriers is provided an eddy current brake (4). It is preferably designed as linear brake. It is so designed that by influence of the different brake factors it develops basically a constant braking effect by compensating the declining drop speed.

Abstract: A magnetic resistive device that is suitable for use with a bicycle trainer including a rotatable shaft having a magnetic resistive force member engaged to an end thereof. In the preferred embodiment the magnetic resistive force member includes a cylindrical outer surface. A plurality of magnets are disposed on one side of said magnetic resistive force member, preferably in alternating polarity. Magnetic fields generated between adjacent magnets create eddy currents within the magnetic resistive force member to create a resistive force against the rotation of the magnetic resistive force member. In the preferred embodiment, the magnets are disposed outside of the cylindrical magnetic resistive force member, and the magnets are movable away from the magnetic resistive force member to reduce the force induced therewithin.

Abstract: A magnetic brake, particularly a linear eddy-current brake for rail vehicles, having a magnet yoke which extends substantially along the whole eddy-current brake, has a concave shape with respect to a plane rail in its installed position.

Abstract: A vehicle braking system including a brake drum connected to a rotational shaft; an annular member formed of a ferromagnetic material; a guide frame for supporting the annular member in a position within said spaced from an inner surface of the brake drum; and a cylindrical body defining an uninterrupted wall between the inner surface of the brake drum and the annular member; at least portions of the cylindrical body disposed directly between the inner surface of the brake drum and outer surfaces of the permanent magnets being formed from a magnetically permeable material.

Abstract: A brake for a hoist gear is provided with a pair of brake shoes for braking a disk to be braked arranged on a winding drum side by pressing both sides of the disk. Floating pin fitting piece portions protrude integrally from a body of a bearing supporting the winding drum. A caliper is attached to the fitting piece portions through floating pins. Axis points of the floating pins are arranged in point symmetry of approximately 180.degree. in respect of an axis point of a push rod inserted into the caliper in order to uniformly contact the disk face.

Abstract: The alternator on an engine has a set of stator coils which are connected to supply current to power accessories and current for a battery charger when the engine is running. When the ignition is turned off, a braking switch is closed which short circuits the stator coils. The resulting high current in the stator coils produces a braking torque on the engine shaft that brings it and any attached implement to a rapid halt.

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 vehicle transmission system comprising a gear box having an outlet shaft which drives a universal joint associated with an eddy current electrical retarder having an annular inductor stator cantilevered-out from the case of the gear box together with a rotor constituting a magnetic core and which includes two wheels on either side of the stator. The wheels are fixed to two ends of an intermediate tube surrounding the universal joint, one of its ends also being fixed to a slab that is secured to the outlet from the gear box.

Abstract: The vehicle transmission system comprises a gear box having a case with a closure plate screwed thereto and an outlet shaft passing through the closure plate and associated with a fork of a universal joint, in association with an electrical eddy current retarder including a stationary inductor and a rotary core, which inductor is cantilevered out from the case by means of a framework. The framework is fixed to the case by screws that also serve to fix the closure plate thereto, and the rotor has a support member which is fixed to the rear face of the fork of the universal joint. The structure and the disposition of the gear box and of the fork of the universal joint are thus independent of whether or not the electrical retarder is present.

Abstract: A magnetostrictive brake is provided with an electrically-driven actuator for moving friction materials back and forth toward a rotary member by utilizing a magnetostrictive element which extends and contracts by means of magnetostriction, a fluid-type displacement enlarging mechanism which is provided between the magnetostrictive element and the friction materials and used for enlarging the displacement of the magnetostrictive element and transmitting the enlarged displacement to the friction materials, and bias magnetic field applying means for applying a bias magnetic field to the magnetostrictive element.

Abstract: Latching mono-stable brakes which are held disengaged from braking surfaces by the energization of electromagnets, and are engaged with the braking surfaces by deenergization of the electromagnets and the magnetic forces of permanent magnets. The brakes are particularly applicable to linear braking in such vehicles as elevators, trains, trams, cable cars and the like. They may also be applicable to vehicle brakes which act on rotating braking surfaces. They may be actuated in response to excessive speed, particularly when installed in vehicles such as elevators. They may be unlatched as needed by reenergization of the electromagnets.

Abstract: An electromagnetic brake system includes a motor having a rotor with a rotatable disk fixed to the rotor and an electromagnetic brake disposed about the disk to selectively prevent rotation of the rotor. The electromagnetic brake is carried on a resilient element so that it is suspended relative to the disk and isolated from the remainder of the system reducing the propagation of structural and airborne noise generated by actuation of the electromagnetic brake.

Abstract: A magnet section is constructed by installing a coil (2) on a yoke (1), and an armature (3) is placed facing the attracting surface of this magnet section. Indentations and projections are formed to confer the characteristics of both an opposing type electromagnet and a plunger type electromagnet on the magnetic path portion that faces yoke (1) and armature (3). By doing this, the attractive force characteristics will be uniform, and the operating speed and the holding position of the armature can be set as desired by adjusting the magnetization. Thus, the force of impact can be lessened by deceleration control of the armature, and the impact noise can be reduced. In a further aspect, a thin, single sheet annular, noise-damping waveform spring (6) is attached to the outer edge of the attracting surface of the magnet's yoke (1) or armature (3).

Abstract: A method to fabricate an integrated elevator drive machine and brake assembly is disclosed. In the method, an outer wall segment of a drive machine housing is cast to form a base of a brake assembly. In casting the outer wall segment to form the base of the brake assembly, a metal blank of higher magnetic permeability is cast or embedded into the casing of the outer wall segment and is machined to form the base. Alternately, the casting of the outer wall segment may be dimensioned and configured so that the casting of the outer wall segment itself forms the base. The outer wall segment is secured for machining a bearing assembly counterbore and, without unsecuring the wall segment from the machining operation, the base of the disc brake assembly is machined to form the groove for housing a magnetic coil, a plurality of bores to house the brake springs, and a plurality of bolt bores.

Abstract: A mono-stable brake system having a mono-stable magnetic array composed of one or more permanent magnets and one or more electromagnets, the stable brake system condition being the brake applied mode in which the magnetic array is magnetically latched by permanent magnet power, without any electromagnet power, to a rotatable member being braked. To release the brake, the permanent magnet field strength is neutralized or at least decreased by appropriate energization of the one or more electromagnets until the magnetic array is moved by magnetic force away from the rotatable member being braked. The brake is preferably in a vehicle braking system, and particularly a trailer braking system, in which the electromagnets are kept energized at all times when the brake is released for trailer movements. The amount of brake application in the service braking mode is controlled by decreasing the magnetic field strength of the one or more electromagnets in accordance with the braking action demand placed on the system.

Abstract: The disclosure relates to an electromagnetic brake mounted to and used with electric motors. Such brakes have an "E" shaped electromagnet mounted on a magnet support. An armature block is mounted on a plate and both the block and the plate move when the electromagnet is energized or de-energized. The improvement involves a magnet support of the cantilever type. Such support bends slightly when the electromagnet is energized so that the faces of the "E" magnet legs can self-align and be maintained substantially parallel with the armature block. The preferred structure also includes a resilient pad interposed between the block and the plate and at least one stop limiting compression of the pad. A special bolt securing plate hold the armature block bolts in place.

Abstract: A brake device comprises a stack of friction plates (6,7) compressible to have a braking effect between an armature (9) and a magnet structure (10,) the structure including a permanent magnet (11) urging the armature towards the magnet structure to effect braking, and an electromagnet (12) energizable to augment the effect of the permanent magnet, or to oppose it either partially or completely so as to release the braking effect.

Abstract: A magnetic latching mechanism and method having permanent magnets and electromagnets arranged to alternately magnetically latch one member to either of two other members using the magnetic flux of the permanent magnets. The magnetic flux of the electromagnets is used to modify the permanent magnetic flux to cancel its magnetic latching to one of the other members and attract the one member to the other of the other members so that the one member is moved to disengage from the one member and engage that other member. The electromagnets are then deenergized and only the permanent magnets' magnetic flux magnetically latches the one member to that other member. The process is reversed to move the one member back into latching engagement with the member with which it in disengaged, magnetically released, relation. The mechanism is disclosed as being used to actuate and release parking brakes by acting on a parking brake actuating arm to move, latch and release that arm.

Abstract: A magnet 34 is mounted to a linkage 30 which passes vertically over a conductive vane 32 which extends the entire length of the elevator hoistway 46. Eddy currents induced in the conductive vane 32 as the magnet 34 passes over the conductive vane 32 cause a reaction force on the magnet 34 and the linkage 30. The reaction force causes the safety 26 or 28 to contact a guide rail 22 on which an elevator car 10 is riding, thereby braking the elevator car 10 at any point in the hoistway between the terminals and eliminating the need for a governor. The vane width 50 is large at the terminals as compared to the middle of the hoistway 46 which increases the reaction force at the terminals. The invention eliminates the need for a governor.

Abstract: An eddy current retarder for an automotive vehicle braking system including an annular fixed frame defining a hollow chamber is disposed internally of a brake drum, a pair of transversely adjacent parallel support rings disposed in the chamber of the fixed frame, one of the support rings being fixed to the frame and the other being rotatable to permit relative angular movement therebetween. Each support ring supports a plurality of permanent magnets circumferentially spaced apart at a given pitch and having outwardly facing alternating polarities. Ferromagnetic plates circumferentially spaced apart at the given pitch are embedded in an outer wall of the fixed frame between the magnets and the brake drum. The ferromagnetic plates have central portions thicker than transversely projecting end portions.

Abstract: A vehicle brake system includes a wheel shaft to which a rotor is fixedly mounted for rotation relative to a stator. Rotor coils are mounted to the rotor in close running relation with stator coils mounted by the stator. The stator also mounts a disc brake caliper and an electric actuator for pressing brake pads against surfaces of the rotor. A control circuit selectively, electrically energizes the rotor coils to produce electromagnetic braking and/or the electric actuator to produce frictional braking by the disc brake in accordance with input signals indicating the magnitude of the depression force exerted on a brake pedal, vehicle speed, and braking torque in a manner to harmonize braking action with the braking demands of the driver.

Abstract: An electromagnetically operated brake with an armature plate (7) axially movable between a magnet body (2) of an electromagnet (1) and a brake disk (8) is proposed. For reducing operating noise, a metallic damping disk (9) with a plurality of elevations (10) is positioned between the armature plate (7) and the magnet body (2).

Abstract: A pump (P) including a stationary pump housing (1) and a rotating pump housing (10, 10a) mounted on the stationary pump housing (1) and defining a fluid receiving chamber (11). A pitot probe (5) freely rotatably mounted in the stationary pump housing (1) and terminating in a tip portion (5a) disposed in the fluid receiving chamber (11). A brake arrangement (20, 21) is provided for braking a rotational speed of the probe (5) so as to enable a controlling of the rotational speed of the probe (5) independent of the rotational speed of the rotating pump housing (10, 10a) thereby producing variable pump pressures and fluid flow rates for the pump (P).

Abstract: An emergency braking system for a vehicle driven by an electric motor. The vehicle includes a manually operable accelerator lever, a displacement detector for detecting displacement of the accelerator lever, an emergency detector disposed in a region of the accelerator lever for detecting an operating force applied to the accelerator lever, a braking device, and a control unit for receiving detection signals from the displacement detector and emergency detector, and outputting control signals to the electric motor and braking device. The control unit outputs the control signal to the braking device to brake the vehicle when the operating force detected by the emergency detector exceeds a predetermined value. In addition or as alternative to the emergency detector, the vehicle may include an emergency detector disposed in a driver's foot rest region for detecting a treading force of the driver.

Abstract: A plurality of eccentric rotors are rotatably fitted between a fixed base and an output shaft on which an object to be vibrationproofed is mounted, the output shaft being supported movably in 3 to 6 Degree-of-Freedom, magnet spring mechanisms are provided on fitted wall surfaces between the fixed base and the eccentric rotor, a composite vibrationproof adjusting spring is provided between the fixed base and the output shaft, the magnet spring mechanism responding to a fine displacement of the output shaft, and in a case where the output shaft is greatly displaced, the output shaft is braked so as to be restored to a predetermined position by the composite vibrationproof adjusting spring mechanism. The magnet spring mechanism produces a large braking force since a rotational angle is large and a rotational-angle speed is high due to eccentricity of eccentric rotors.