Abstract: A hybrid linear actuator features a central load shaft on which a plurality of solid-state magnetostrictive thrusters are positioned in operative relation to electric motors of a permanent magnet synchronous type to impart linear thrust force to the load shaft through clutch units also positioned thereon and under control of force and stroke amplification of output force from motor shafts projecting from the motors.

Abstract: A braking device for a dual bearing reel includes a spool braking unit and a spool control unit. The spool braking unit includes a rotor element that rotates in association with the spool and includes a plurality of magnets sequentially arranged in the rotational direction, a plurality of serially connected coils that are disposed around a periphery of the rotor element in a circumferential direction, and a switch element that is connected to both ends of the plurality of the serially connected plurality of coils. The spool control unit electrically controls the spool braking unit, and includes a circuit board on which the plurality of coils are installed and which is mounted on the reel unit, and a controller that is mounted on the circuit board. This way, insulation on the coil and on a circuit board and secured. It is also easier to assemble a braking device.

Abstract: A differential assembly includes a case, a pair of pinion gears, a pair of side gears and an electrically operable coupling including an electromagnet. The coupling selectively drivingly interconnects one of the side gears and the case. The electromagnet of the coupling is axially moveable within the case to selectively place the differential assembly in an open or a locked condition.

Abstract: A braking assembly with a manageable self-generating power energy is disclosed. A pair of curved braking plates are disposed between the stator and the rotor. A pulling mechanism is provided on the stator for pulling two free ends of two curved braking plates. A plurality of first permanent magnets are fixed to the outer circumferential surface of each the curved braking plates. Moreover, at least one power-generating coil is provided on a stator of the braking assembly nearby the permanent magnets for generating an AC voltage when the rotary central shaft rotates. A control circuit receives the AC voltage and rectifies and stabilizes the AC voltage to generate a DC voltages to drive the motor of the pulling mechanism to rotate, and by means of the pulling mechanism, the braking force of the braking assembly is controlled.

Abstract: An eddy current deceleration device includes a rotor mounted on a rotary shaft; a first magnet ring arranged facing this rotor and including permanent magnets that are arranged at prescribed intervals in the circumferential direction and such that the poles thereof facing each other in the circumferential direction are of a same polarity, and magnetic members interposed between these permanent magnets; and a second magnet ring arranged between this first magnet ring and the rotor and including permanent magnets and magnetic members which are similar to those of the first magnet ring; at least one of the first and second magnet rings being freely rotatable. The permanent magnets of the first and second magnet rings can be magnetized separately between the first and second magnet rings.

Abstract: The invention relates to an electromechanical brake comprising a stack of disks and at least one electromechanical actuator having a pusher for applying pressure to the stack of disks in controlled manner, the brake being equipped with a parking device for maintaining pressure on the disks at least while the brake is not fed with electrical current. In the invention, the parking device comprises a resilient member and a selector which is mounted to move between a first position in which the resilient member is mechanically decoupled from the pusher and is maintained in an elastically deformed state to form a potential energy reserve, and a second position in which the resilient member is mechanically coupled to the pusher so that the pusher exerts pressure on the stack of disks under drive from the resilient member.

Abstract: A linear actuator comprises a piston and a rotary electric motor together with means which are interposed between the electric motor and the piston to define a mechanical system for transforming rotary movement of the motor into linear displacement of said piston, the actuator is characterized in that the electric motor is a vibration type motor comprising at least a stator and a rotor together with excitation means for deforming said stator and/or said rotor in modes of vibration combining tangential vibration and normal vibration for driving said rotor in rotation, and in that the means interposed between the electric motor and the piston include means for mechanically decoupling said piston from said electric motor in the event of the electrical power supply to the elector motor being interrupted.

Abstract: An energy management device has a plurality of electromagnets positioned between a shaft and a seatbelt spool. When energized, the electromagnets move radially outwardly to engage the inside surface of a hub of the seatbelt spool. By adjusting the amount of current supplied to the electromagnets, the amount of friction, and thus the amount of energy dissipated, can be controlled. A D-ring can be supported on the cable which goes to a spool so that during a crash the ring moves forward as cable is pulled out of the spool which in turn is braked by the energy management device.

Abstract: An electromagnetic brake interposed between a fixed housing and a rotating member. The electromagnetic brake includes a multiplate brake mechanism, a ringlike core member fixed in the fixed housing, an annular exciting coil accommodated in an annular groove formed on the core member, and a ringlike armature member opposed to the annular groove of the core member and having an outer diameter larger than the outer diameter of the core member. The electromagnetic brake further includes an annular pressure plate axially and movably mounted on the fixed housing at one end portion of the multiplate brake mechanism adjacent to the core member, and a cylindrical pressure member provided so as to surround the outer circumferential surface of the core member and be movable in a direction of pressing the multiplate brake mechanism as being guided by the core member.

Abstract: A controllable brake includes a rotor supported on one shaft end. The rotor is housed within a chamber containing a field controllable material which is acted upon by a magnetic field generator to change the rheology of the material and thereby impede movement of the rotor. The shaft is supported by two bearings which, in combination with the housing define a second housing chamber adapted to enclose means for monitoring and/or controlling the brake and in this way, an integrated, compact controllable brake is provided.

Abstract: A brake structure of a traction machine includes a brake drum which is made rotatable about a shaft disposed on a rotary axis of the traction machine, and an electromagnetic brake unit built in an inner space of the brake drum. The electromagnetic brake unit includes a plurality of movable iron cores, a plurality of brake shoes located on the outside of the individual movable iron cores and joined thereto by connecting members, the brake shoes having curved outer surfaces facing a curved inner surface of the brake drum, and a one-piece formed stationary iron core block. The one-piece formed stationary iron core block has a plurality of stationary iron core portions joined to the individual movable iron cores via compression springs for forcing the individual brake shoes against the curved inner surface of the brake drum via the movable iron cores and the connecting members.

Abstract: The invention comprises a retarder system for use with road vehicles. The retarder system discloses an improved vehicular retarder which incorporates the use of a PMG Gear ratio which permits use of a permanent magnet generator on a secondary shaft that is coupled by the gear ratio to a drive train.

Abstract: An electromagnetic brake, interposed between a stationary housing and a rotational member, includes a multi-plate brake mechanism, a ring-like core member fixed within the housing, an exciting coil accommodated in a groove in the core member, and a ring-like armature disposed so as to confront the annular groove in the core member. The electromagnetic brake includes a cylindrical press member which having one end fixed to an outer circumferential portion of the armature and the other end engaged with the multi-plate brake mechanism and fitted on the core member, and also a cylindrical guide member having one end fixed to an inner circumferential portion of the armature and the other end fitted in the core member so that the armature is guided by the core member so as to move in the direction in which the multi-plate brake mechanism is pressed.

Abstract: A braking device that can be released electromagnetically exhibits at least one brake shoe (20), which is pressed against a braking area by the force of a brake spring (14) in order to brake a linear or rotary motion. A magnet system exhibits a coil (1) and an armature (4), while current fed to the coil (1) causes the armature (4) to move against the force exerted by the brake spring (14), with the result that the brake shoes (10) is able to rise from the braking area (13) and thus release the brake. To achieve a high braking force with a magnet system of small structural dimensions the brake force of the brake spring (14) is transmitted from the armature (4) to the brake shoes (10) by at least one pressure element (5) with diagonal wedge areas (7, 8).

Abstract: An actuating unit for use on an electromechanically actuated disc brake for automotive vehicles including a drive unit or an electric motor, an actuating element for actuating one of two friction linings displaceably arranged in a brake caliper, and a first and a second reducing gear. The first reducing gear is comprised as a ball screw, while a planetary gear is used as the second reducing gear. To increase the efficiency, the present invention discloses a coupling shaft used to transmit forces from the planet cage of the planetary gear to the threaded spindle of the ball screw. The ends of the coupling shaft form universal joints with the planet cage and the threaded spindle.

Abstract: An electromagnetic coupling apparatus interposed between a fixed housing and a rotating member. The electromagnetic coupling apparatus includes a multiplate brake mechanism, a ringlike core member fixed in the housing, an annular exciting coil accommodated in an annular groove of the core member, and a ringlike armature member opposed to the annular groove of the core member. The armature member has an outer diameter larger than the outer diameter of the core member. The electromagnetic brake further includes a cylindrical pressure member having one end fixed to an outer circumferential portion of the armature member and the other end engaged with the multiplate brake mechanism. The cylindrical pressure member surrounds the core member so as to be movable in a direction of applying a pressure to the multiplate brake mechanism as being guided by the core member. The opposed portion between the core member and the armature member is formed by tapered end surfaces each having a predetermined tapered angle.

Abstract: An electromagnetic brake, interposed between a stationary housing and a rotational member, includes a multi-plate brake mechanism, a ring-like core member fixed within the housing, an exciting coil accommodated in a groove in the core member, and a ring-like armature disposed so as to confront the annular groove in the core member. The electromagnetic brake includes a cylindrical press member which having one end fixed to an outer circumferential portion of the armature and the other end engaged with the multi-plate brake mechanism and fitted on the core member, and also a cylindrical guide member having one end fixed to an inner circumferential portion of the armature and the other end fitted in the core member so that the armature is guided by the core member so as to move in the direction in which the multi-plate brake mechanism is pressed.

Abstract: A safety locking device for electromechanical equipment provided with a rotating shaft, particularly an aircraft wheel brake with a safety locking device. The device comprises a first friction element connected rotationally to the shaft, and a second friction element immobile rotationally and extending opposite the first friction element. One of the two friction elements is able to move in translation, under the action of a controllable actuator, between a locking position and a release position. The locking and release positions correspond to successive angular positions of a selector able to move in rotation and connected in translation to the friction element able to move in translation. The selector is maintained in any one of its angular positions by a resilient member, while the actuator provides solely the passage of the selector from one angular position to the following one, and consequently passage from the locking position to the release position or vice-versa.

Abstract: An electromagnetic brake assembly has a brake shoe) movable between a first position at which it is located in a braking engagement with a movable surface and a second position at which it is located out of braking engagement with the movable surface. An electromagnet is energizable to bias the shoe to one or other of the first and the second positions and a power supply is provided having a direct current source for supplying a direct current flow to energize the electromagnet. The power supply further has an alternating current source that provides an alternating current flow through the electromagnet with a successively decreasing amplitude characteristic, after interruption of the direct current flow.

Abstract: In an electric motor, in at least one of its pole shoes (15) belonging to the stator (11), there is a brake element (23), which is movable in the direction of the rotor (12) and which at its point that can be placed on the rotor (12) is provided with a brake lining (31). Because the brake lining (31) has approximately the same magnetic conductivity as the pole shoe (15) and the brake element (23) inserted into it, this brake lining (31) forms a slight magnetic resistance, thus preventing an exaggeration of the idling rpm of the electric motor.

Abstract: Systems and methods for providing passive haptic feedback are described. Embodiments of the present invention comprise an actuator for bringing a manipulandum and braking surface into contact and thereby providing a resistance. The manipulandum includes scroll wheels, scroll drums, linear sliders and similar user input devices. The actuator may be, for example, electromagnetic or piezo-electric. An embodiment of the present invention may include a processor in communication with the actuator for providing the haptic effects.

Abstract: An electromagnetic brake interposed between a fixed housing and a rotating member. The electromagnetic brake includes a multiplate brake mechanism, a ringlike core member fixed through an annular brake guide inside the fixed housing, an exciting coil accommodated in an annular groove formed on the core member, and a ringlike armature member arranged radially outside of the core member. Each of the core member and the armature member has a plurality of tapering surfaces. The tapering surfaces of the core member are respectively complementary in shape to the tapering surfaces of the armature member. The electromagnetic brake further includes a cylindrical pressure member movable in a direction of pressing the multiplate brake mechanism. The cylindrical pressure member has one end fixed to the armature member and another end engaged with the multiplate brake mechanism.

Abstract: An electrically operated disc brake includes a ball/ramp mechanism operable to convert rotary motion of an electric motor to linear motion and transmit the linear motion to a piston so that the piston is advanced to urge a pair of friction pads against opposite sides of a disc rotor to produce a barking force. The disc brake also includes a pad wear adjusting mechanism operable to threadably move the piston relative to an axially movable member of the ball/ramp mechanism in response to the amount of pad wear. The axially movable member has a female thread along its full length. The piston includes a piston head and a piston rod joined to the piston head. The piston rod has a male thread or threaded section. The threaded section has a length such that the piston can safely be moved together and relative to the axially movable member. The piston also has a smooth section extending-from the threaded section toward the disc rotor.

Abstract: A vehicle braking system and method of control is disclosed which includes electromagnetic and friction braking functionality. The electromagnetic braking system includes a generator which supplies power to eddy current devices. Accordingly, the eddy current devices apply a retarding torque on the wheels of the vehicle. In the event the generator produces an amount of power greater than that needed by the electromagnetic braking system, the generator will supply power to a supplemental power source such as a battery.

Abstract: A retarder (16), as a braking device or auxiliary braking device for vehicles or the like, in particular rail vehicles, is described, having a stator (3), comprising at least two axially spaced-apart stator halves (3a, 3b), which each have magnetic field coils, and a rotor which is disposed between the at least two stator halves (3a, 3b), the rotor being coupled in a manner fixed against relative rotation to an axle (5) or shaft of the vehicle and the stator being coupled with the vehicle, or a undercarriage (19) of the vehicle. The rotor is formed by at least one rotor disk (1) divided into two parts, comprising two adjacent rotor halves (1a, 1b), which are joined to one another in a radially inner annular region, oriented toward the axle (5) or shaft, and are disposed in a radially outer annular section (7a, 7b), with axial clearance from one another (FIG. 4).

Abstract: The brake includes a housing for mounting and a disc assembly. The disc assembly engages a drive shaft for rotation therewith. A flange on the disc assembly receives a first ring and a second ring, each ring is slideably engaged to the flange for axial motion. Release plates adjacent to the second ring are free to move in an axial direction. A field cup has springs to bias the release plates against the second ring and o-rings to facilitate quiet operation of the elevator car brake. When no current flows through the coil, the release plates are biased against the second ring. Thus, the second ring engages the friction surface of the housing to park and hold the drive shaft. When current flows through the coil, the first and second release plates are drawn to the field cup, overcome the bias force of the springs and compress the o-rings.

Abstract: The present invention relates to an electromagnetic brake. In an electromagnetic brake (11) comprising an electromagnetic brake body (13) having yoke members (15a and 15b) with a coil winding (14) and a brake movable member (16) formed of a magnetic material, which is disposed via an air gap (18) in a magnetic path formed by the electromagnetic brake body (13) and is fixed to a motor rotating shaft (2b), a magnetic fluid (20)is filled in the air gap (18), and a sealing member (19) for rotatably sealing the motor rotating shaft (2b) is disposed between the electromagnetic brake body (13) and the motor rotating shaft (2b) to prevent the magnetic fluid (20) from leaking, whereby the electromagnetic brake (11)is applied when the coil winding (14) is excited.

Abstract: A lightweight regenerative brake having a large braking force is provided. A regenerative brake 1 comprises a brake disc (10) and a pair of stators (20) to perform regenerative braking. This regenerative brake (1) reduces the heat generated in the brake disc (10), because a part of the kinetic energy of a railway car is regenerated by generation of electricity in a tertiary circuit of the power source side when the brake is applied, and consequently the amount of energy converted into heat energy is decreased. Compared to a conventional regenerative brake, this regenerative brake (1) enables the disc (10) to be made thinner and dispenses with a cooling device such as a fan. Accordingly, a small-sizes and lightweight brake having a large braking force can be constituted using this regenerative brake (1).

Abstract: A method and system for controlling an eddy current braking system in a motor vehicle is provided. The motor vehicle includes a prime mover linked to the eddy current braking system to provide torque thereto, and the eddy current braking system has a retarder assembly including at least a rotor and a stator. The method includes the steps of detecting a feedback current from the retarder assembly, detecting a rotor speed of the rotor, providing a signal indicative of a desired retarding torque, and determining a command current for the retarder as a function of the feedback current, rotor speed and desired retarding torque using a closed-loop sliding-mode control algorithm. The command current is provided to the retarder to control application of torque to the prime mover.

Abstract: A magnetic flux detector comprises a core member 12 and an armature member 11, and the core member 12 generates a magnetic flux by an exciting coil 13 when the exciting coil receives an excitation current controlled by an excitation current controller 30. The magnetic flux detector further comprises a search coil 14, which is provided in a magnetic path for the magnetic flux, and a magnetic flux calculator 40, which determines the magnitude of the magnetic flux by measuring an electromotive force induced in the search coil 14 by a change in the magnetic flux. The magnetic flux calculator 40 has a potential setup resistor 43, whose resistance B is sufficiently larger than the internal resistance A of the search coil 14 (approximately A=B/3˜B/30).

Abstract: The invention comprises a retarder system for use with road vehicles. The retarder system discloses two improvements. The first is a system incorporating a self-excited electromagnetic and hydraulic retarder combination. The second is a retarder system incorporating the use of a PMG Gear ratio which permits use of a permanent magnet generator on a secondary shaft which is coupled by the gear ratio to a drive train.

Abstract: A powdered metal electromagnetic is provided that has much less variance between units, increased frictional drag, reduced wear of itself and the brake drum disk during use and an increased resistance to moisture due to the use of a donor material that increases performance and reliability. In addition it can withstand much higher surface speeds while producing higher frictional drag.

Abstract: An electromagnetic brake interposed between a fixed housing and a rotating member. The electromagnetic brake includes a multiplate brake mechanism, a ringlike core member fixed in the fixed housing, an annular exciting coil accommodated in an annular groove formed on the core member, and a ringlike armature member opposed to the annular groove of the core member and having an outer diameter larger than the outer diameter of the core member. The electromagnetic brake further includes an annular pressure plate axially and movably mounted on the fixed housing at one end portion of the multiplate brake mechanism adjacent to the core member, and a cylindrical pressure member provided so as to surround the outer circumferential surface of the core member and be movable in a direction of pressing the multiplate brake mechanism as being guided by the core member.

Abstract: The installation enables the downhill transportation of passengers from a higher station to a lower station along a rail. Cars that are guided along the rail are equipped with the first of two interacting elements of an electromagnetic braking device, in particular with one or more permanent magnets, and the guide rail being equipped with the second elements, in particular braking strips made from an electrically conductive nonmagnetizable material, such as copper or aluminum, which interact with said first elements of the braking device. Each car is equipped with one or more first elements with an operating brake that is adjustable as a function of its load, and with one or more first elements of a safety brake that is activatable during downhill travel.

Abstract: The invention comprises a retarder system for use with road vehicles. The retarder system can combine an electromagnetic retarder with up to four functions: 1) a brushless DC alternator; 2) a brushless DC starter; 3) an active damper that replaces the vehicle's flywheel and smooths out residual torque pulsations; and, 4) a transmission-synchronizing inertia brake; and, 5) a transient engine booster to offset the lag associated with turbo-charged engines. The device may be integrated within the engine or within the transmission, preferably using the vehicle heat exchanger for its cooling system.

Abstract: A brake apparatus has a base plate and a first brake disk movable in an axial direction. The apparatus also has a second brake disk positioned remote from the base plate relative to the first brake disk. A brake operating device is connected essentially torsion-proof with the first and second brake disks and is positioned between the base plate and the first and second brake disks. A friction lining is positioned between the first and second brake disks and is carried on an input shaft in a torsion-proof manner relative to the shaft. The input shaft is rotatable relative to the base plate. A sleeve type spacer has a fastener passing through the sleeve. The sleeve is adjustable in the axial direction to keep a distance between the first and second brake disks. The sleeve and the fastener axially retain the second brake disk at the selected distance from the first brake disk during operation of the brake apparatus.

Abstract: A braking device that can be released electromagnetically exhibits at least one brake shoe (20), which is pressed against a braking area by the force of a brake spring (14) in order to brake a linear or rotary motion. A magnet system exhibits a coil (1) and an armature (4), while current fed to the coil (1) causes the armature (4) to move against the force exerted by the brake spring (14), with the result that the brake shoes (10) is able to rise from the braking area (13) and thus release the brake. To achieve a high braking force with a magnet system of small structural dimensions the brake force of the brake spring (14) is transmitted from the armature (4) to the brake shoes (10) by at least one pressure element (5) with diagonal wedge areas (7, 8).

Abstract: An electromagnetically actuated mechanical brake 12 for an electric motor, for a geared motor, with an excitation coil 5 for the electromagnetic actuation of the brake 12, in particular for releasing the brake 12, and with a circuit arrangement 9 to supply an excitation current to the excitation coil 5, in which the excitation coil 5 and the circuit arrangement 9 are together integrated into a structural unit 13.

Abstract: An adjustable magnetic damping device formed of a left cover shell, a plurality of adjustment members, a plurality of magnets, a cam wheel, and a right cover shell, and installed in the flywheel of a stationary bicycle adjacent to a metal lining of the flywheel to impart a damping resistance to the flywheel. The cam wheel is connected to a pull cable of which the tension can be adjusted for enabling the angular position of the cam wheel to be changed, so as to further adjust the radial position of the magnets in changing the strength of the magnetic resistance.

Abstract: The invention relates to an electric motor (1) with a rotor (2) and a housing (3) that has at one end a brake-mounting end shield (4) to support a shaft (5) of the rotor (2) that passes through the brake-mounting end shield (4). The electric motor (1) further comprises an electromagnetically actuated brake (10), which comprises a magnet body (17) with a brake coil (11). An armature plate (13), which can be pulled by the magnet body (17) against a braking pressure force exerted by springs (12), is substantially nonrotatably mounted in a guide mechanism (15) but can be axially displaced in the direction of the shaft (5). A brake rotor (20), against which the armature plate (13) is apposed with the braking pressure when no current is flowing through the brake coil (11), is fixed to the shaft (5), preferably by way of a drive element (28).

Abstract: An electromagnetic brake system is disclosed for controlling motion of a component that is movable relative to the brake system. The system includes a magnet body mounted to a support and having at least one electrically controlled magnetic device on it for generating a magnetic force when activated. A back plate is mounted adjacent to the magnet body on one side of a movable component. An armature plate is located between the magnet body and the movable component. At least one spring is located on the magnet body between the magnet body and the armature plate for biasing the armature plate away from the magnet body. The spring has a spring force that is less than the magnetic force of the magnetic device such that activation of the magnetic device urges the armature plate toward the magnet body, overcoming the spring force.

Abstract: The present invention provides a rotary holding device for an electrically actuated brake system in a vehicle including a rotor assembly including a plurality of teeth and a stator assembly including a plurality of teeth. The stator assembly teeth are positioned adjacent the rotor assembly teeth and a coil is positioned to allow a magnetic flux to align the rotor assembly teeth and the stator assembly teeth when the coil is energized to hold a motor shaft coupled to the device.

Abstract: The brake includes a housing for mounting and a disc assembly. The disc assembly engages a drive shaft for rotation therewith. A flange on the disc assembly receives a first ring and a second ring, each ring is slideably engaged to the flange for axial motion. Release plates adjacent to the second ring are free to move in an axial direction. A field cup has springs to bias the release plates against the second ring and o-rings to facilitate quiet operation of the elevator car brake. When no current flows through the coil, the release plates are biased against the second ring. Thus, the second ring engages the friction surface of the housing to park and hold the drive shaft. When current flows through the coil, the first and second release plates are drawn to the field cup, overcome the bias force of the springs and compress the o-rings.

Abstract: An electric motor brake has a printed circuit board which circumferentially locates and. Returns a plurality of electromagnetic coil assemblies within a coil housing. The circuit board simplifies both the assembly and wiring associated with the electric motor brake. The circuit board is located within the coil housing and a stand off located between the printed circuit, board and the coil housing electrically connects the coil stators of each coil assembly with the coil housing. The circuit board connects each third coil assembly in a circular pattern to the same phase of a three-phase AC power source.

Abstract: An electromagnetic brake system is disclosed for controlling motion of a component that is movable relative to the brake system. The system includes a magnet body mounted to a support and having at least one electrically controlled magnetic device on it for generating a magnetic force when activated. A back plate is mounted adjacent to the magnet body on one side of a movable component. An armature plate is located between the magnet body and the movable component. At least one spring is located on the magnet body between the magnet body and the armature plate for biasing the armature plate away from the magnet body. The spring has a spring force that is less than the magnetic force of the magnetic device such that activation of the magnetic device urges the armature plate toward the magnet body, overcoming the spring force.

Abstract: In a roller with a built-in motor, which is powered by a brushless motor and stopped by an electromagnetic brake, when an electric current is supplied to the brushless motor, an electric current is supplied at a certain voltage to the electromagnetic coil to release the electromagnetic brake. The rpm of the brushless motor is detected; and when it reaches a certain predetermined level, the supply of the electric current to the electromagnetic coil is turned off and on in a short period of time, thus maintaining the released condition of the electromagnetic brake. By turning off and on the supply of the electric current to the electromagnetic coil, the average voltage can be maintained low, and the heat generation can be reduced.

Abstract: Holding brake for a traction sheave elevator, comprising a brake body (1), a movable frame (2) movably mounted in the brake body, a brake pad (3) attached to the movable frame, a pulling element (4) mounted on the brake body for pulling the movable frame toward the brake body and a compressing element (5) mounted between the brake body and the movable frame and serving to move the movable frame away from the brake body and press the brake pad attached to the movable frame against the brake surface (6). A gap (9) is provided between the movable frame surface (7) oriented in the direction of motion of the movable frame (2) and a counter surface (8) oriented in a corresponding direction, in which gap (9) is fitted a damping element (10) which is in contact with both surfaces to damp the motion of the movable frame.

Abstract: A wheel for a stationary bicycle includes a first disk and a second disk with an axle extending through the two disks. A plurality of rods and rollers are connected between the two disks so as to obtain a gap between the two disks. Two plates are respectively pivotally connected between the two disks at one end thereof and the other end of each plate is connected by a wire which extends through one of the disks. The axle is located between the two plates. Each plate has a plurality of magnets connected thereon so that when pulling the wire, the magnets together with the plates are moved relative to a periphery of the disks and this changes a distance between the magnets and a magnetic field damping device of the stationary bicycle.

Abstract: An eletromagnetic 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: A vehicle brake assembly for improving the brake system on vehicle without using wearable brake pads. The vehicle brake assembly includes a drum having spaced openings a bore extending through the drum. A securing means is provided for securing the drum in a vehicle. A shaft is rotatably extended through the drum. A disc brake member has a pair of sides and a centrally-disposed opening therethrough and is mounted about the shaft for rotation therewith and is disposed within the drum and has a plurality of holes extending therethrough. A braking means is provided for braking the disc brake member.