Abstract: The invention relates to a stand for a medical device. The stand includes a first support arm and a second support arm, which is connected to the first support arm via a first joint connection having a first degree of freedom of motion and on which the medical device can be held. The first joint connection has a first switching device, which can be put into a first switching state and into a second switching state, wherein, in the first switching state, the first degree of freedom of motion is blocked or disabled and wherein, in the second switching state, the first degree of freedom of motion is open or enabled.

Abstract: A parking device includes a drive cam disposed around an MG shaft that transmits a drive force of a second motor generator by being coupled with a parking gear, a driven cam disposed around an MG shaft so as to be able to rotate integrally with the MG shaft and capable of moving in the axial direction of the MG shaft by a relative rotation generated between the driven cam and the drive cam when the parking gear is locked by a pilot clutch, and a dog type brake that engages the parking gear with the MG shaft and a transaxle case accommodating the parking device by the movement of the driven cam. With the configuration, a shock load at the time of operation can be suppressed and the parking device can be reduced in size.

Abstract: A hand-detecting brake system for baby stroller is equipped on a stroller frame, including a handle holder, a brake mechanism, an electric motor, and a battery. The handle holder is connected to one end of the stroller frame equipped with a hand-detecting device for creating a signal when user's hand being held or touched on the handle holder. The brake mechanism is operatively mounted on one side of a first wheel of the stroller frame for braking and un-braking the first wheel. The electric motor is capable of driving the brake mechanism to brake the first wheel when being received the signal from the hand-detecting device, and un-brake the first wheel when the signal from the hand-detecting device being disappeared. The battery electrically connected to the hand-detecting device and the electric motor for supplying needed power thereto.

Abstract: An elevator installation braking device is actuated and reset by an electromechanical actuator including an energy store, a retaining device, a resetting device and at least one connecting element for connecting the actuator to the elevator brake. The resetting device retains the connecting element, via the retaining device and counter to the action of the energy store, in a first operating position, corresponding to a standby position of the brake, or guides the actuator back into this position. The energy store acts as required, upon release of the retaining device, on the connecting element to actuate the brake and to bring it into a corresponding engagement position. The resetting device has a recoil-prevention device to relieve recoil forces. The energy store can have a stop buffer to reduce the force impact when the energy store strikes an end position.

Abstract: A brake system for a rail-guided tractive vehicle includes electronic, pneumatic, and mechanical components, as well as vehicle interfaces for connecting the brake system to the tractive vehicle. The invention provides a brake system that can be adapted easily and economically to different requirements of the customers, and in particular to different locomotives. For that purpose, the components are housed in modules respectively having predetermined spatial measurements and each module has at least one predetermined electric or pneumatic vehicle interface, with respect to their spatial position within the module and also with respect to their operational variables.

Abstract: A brake release device attached to a door machine comprises a ring plate provided with a plurality of openings and fixed on a pull chain disc, a base plate located at the outside of the door machine, a passive plate provided with a plurality of plug pins that correspond to the openings of the ring plate and slides together with the sliding pin, a guiding member fixed together with the base plate, a sliding pin corresponding to a brake release bar for releasing brake of the door machine and slidably guided by the guiding member, a spring element and a fusible link device that curbs the sliding pin from leaving the brake release bar. By the spring element, the guiding member stores potential energy for sliding.

Abstract: A blocking device, and a gear-drive unit containing such a blocking device, and a method for producing such a gear-drive unit for blocking a rotary motion of a shaft (14) relative to a housing (16) of the gear-drive unit (10), having a first, rotatable blocking element (32) and a second blocking element (34) which is displaceable relative to the first blocking element (32) by means of at least one electromagnet (44) and at least one restoring element (42), in which the blocking elements (32, 34) in the blocked state mesh in the axial direction with one another by form-locking, and the blocking device (30) is embodied as a separate, independent structural unit (31), which can be mounted as a unit (31) on the one hand onto the housing (16) and on the other onto the shaft (14).

Abstract: A door machine having an electric motor and a chain disk locking mechanism. The chain disk locking mechanism includes a chain disk, an engaging rotary block, a stationary shaft and a plurality of moving pins. When the chain disk is pulled to rotate, the fixed pins of the chain disk press the moving pins so as to push the engaging rotary block to rotate with the stationary shaft together. When the stationary shaft is pulled to rotate, the engaging rotary block prohibits the moving pins from rotation. When the chain disk is pulled manually, the rolling door can be rolled upward or downward; when cease pulling the chain disk, braking is immediately effected so as to prevent the rolling door from moving upward or downward. Hence, the clutch mechanism can be omitted for cost saving and the structure of the mechanism can be simplified.

Abstract: An electromagnetic brake contains a coil seat including plural receiving holes disposed on a front end thereof to receive plural compression springs respectively and an electromagnetic coil mounted on the front end thereof; a movable friction piece fitted on the front end thereof; a brake member fixed in a front end of the friction piece and including a transmitting shaft fitted thereon; a fixed member secured on a front end of the brake member, wherein the electromagnetic coil includes a first silicon steel ring, a plurality of slots and a number of elongate grooves, and each slot includes an isolation holder fitted therein, and the isolation holder includes a recess formed on one side thereof to correspond to the groove of the first silicon steel ring, and between two abutting isolation holders is provided with a coil set formed by an enameled copper wire.

Abstract: A safety stop is provided for stopping a movable member having at least one set of opposed wheels for gripping a rail. The stop has a track on each of opposite sides forming a wedge shape of a narrow end progressively widening to a wide end in a direction of travel of the movable member. With the opposed wheels of the movable member respectively at opposite sides of the wedge shape member, the tracks of the wedge shape member engage and impart a spreading strain to the opposed wheels as the movable member moves in the direction of travel. The opposed wheels of the movable member comprise a deformable material to absorb the kinetic energy of the movable member. The tracks of the stop additionally may have undulating features comprising concave and convex surfaces in the direction of motion.

Abstract: A mechanical brake for arresting movement of the armature of a linear electric motor in the absence of electrical power comprising a pivotably mounted plate (17) having an aperture (19) for receiving a member (10) attached to the armature of the motor, and an electrically operated holding device (23) contacting a free end (21) of the plate and arranged to hold the plate in a condition to permit movement of the member while electrical power is present and to permit the plate to pivot around its second end (20) to a jamming position in the absence of electrical power.

Abstract: A safety stop is provided for stopping a movable member having at least one set of opposed wheels for gripping a rail. The stop has a track on each of opposite sides forming a wedge shape of a narrow end progressively widening to a wide end in a direction of travel of the movable member. With the opposed wheels of the movable member respectively at opposite sides of the wedge shape member, the tracks of the wedge shape member engage and impart a spreading strain to the opposed wheels as the movable member moves in the direction of travel. The opposed wheels of the movable member comprise a deformable material to absorb the kinetic energy of the movable member. The tracks of the stop additionally may have undulating features comprising concave and convex surfaces in the direction of motion.

Abstract: An output shaft of a motor is divided into a front shaft (first or second front shaft) and a rear shaft. The first front shaft is to be rotatably supported by a first shaft support plate connected directly to a motor housing. The second front shaft is to be rotatably supported by a second shaft support plate connected to the motor housing with a spacer provided between the second shaft support plate and the motor housing. A braking mechanism including a flange plate, a braking member and a biasing member is mounted to the second shaft support plate and the second front shaft. The first front shaft is used with the first shaft support plate to realize a power tool without the braking mechanism. The second front shaft is used with the second shaft support plate and the spacer to realize a power tool without the braking mechanism.

Abstract: Disclosed is an electromagnetically released spring pressure brake that is to be mounted on a machine wall or similar. Said brake comprises a uniform rectangular coil support (1) with two preferably oval, adjacent coils (7, 7.1), to which two separately movable rectangular armature disks are assigned. Said armature disks apply pressure to a joint rotor encompassing two friction linings that are mounted on each side when the coils (7, 7.1) are de-energized. The rotor is axially movable on an axially toothed hub. Two respective fastening screws (9) are used for guiding each of the armature disks parallel along the central longitudinal axis (13, 13.1) thereof, on the radially largest possible diameter of the rotor. A manual lever (10) featuring manual releasing bolts is provided for each armature disk.

Abstract: A braking mechanism is provided for a hydraulic motor driven wheel utilizing a two-piece design of a hub that rotates by means of a drive shaft. A hydraulic chamber is created on the hub in which a piston resides. The piston is grounded (i.e., non-rotatable relative to the motor housing) in the sealed chamber. The piston face inside of the chamber has a radial set of face teeth. These face teeth are similar to the face teeth inside of the hydraulic chamber. When the chamber is pressurized, the piston face teeth are pushed away from the hub face teeth allowing the hub to freely rotate. When pressure is released from the chamber, a spring, or a number of springs, push the piston into the hub causing it to stop rotating relative to the piston.

Abstract: Disclosed is a disc brake for a vehicle, such as an electronic wedge brake, capable of preventing a disc from being subject to the moment due to misalignment of inner and outer friction members with respect to a disc. The disc brake includes a disc rotating together with a vehicle wheel, inner and outer friction pads disposed at both sides of the disc, respectively, a wedge unit installed at rear sides of the inner and outer friction pads to press the inner and outer friction pads against the disc, a driving device that operates the wedge unit for a braking operation, and a sync member for synchronizing braking positions of the inner and outer friction pads with respect to the disc. Since the disc is prevented from being subject to the moment, uneven wear does not occur in the friction member and/or the disc and deformation of the disc is prevented.

Abstract: An elevator rope braking system including a base portion and a top portion affixed by at least one mounting structure; an outer housing and a magnetic core arranged on and affixed to the base portion; an armature plate intermediate the top portion and the base portion having an armature extending toward the base portion; and an electromagnetic coil positioned between the outer housing and the magnetic core and operative to provide an electromagnetic force sufficient to move the armature from a first braking position to a second non-braking position.

Abstract: A rolling bearing with a brake mechanism, in particular a rotary connection, which has an outer bearing ring and an inner bearing ring, between which rolling bodies roll on assigned tracks. A brake element, which is connected displaceably to one of the bearing rings, is pressed against an opposite surface connected to the associated other bearing ring in order to produce a braking effect by frictional engagement and the frictional engagement can be cancelled by means of an electromagnet. The brake element is arranged as an integral bearing component inside one of the bearing rings and is pressed against the opposite surface by means of a spring force. The spring force is variably settable and the electromagnet includes one of the bearing rings as a soft-iron core and a coil enclosing the latter.

Abstract: Disclosed is a supplementary braking thrust apparatus for a brake, comprising a thruster. A push lever of the thruster acts on a brake unit. The supplementary braking thrust apparatus of the brake further comprises a supplementary braking mechanism, and the supplementary braking mechanism acts on a brake arm to realize supplementary braking. Also, disclosed is a supplementary braking method of a brake, comprising the following steps: applying a braking action to the brake arm using the thruster; and applying a further braking action to the brake arm using the supplementary braking mechanism to obtain supplementary braking of the brake.

Abstract: A brake release device attached to a door machine comprises a ring plate provided with a plurality of openings and fixed on a pull chain disc, a base plate located at the outside of the door machine, a passive plate provided with a plurality of plug pins that correspond to the openings of the ring plate and slides together with the sliding pin, a guiding member fixed together with the base plate, a sliding pin corresponding to a brake release bar for releasing brake of the door machine and slidably guided by the guiding member, a spring element and a fusible link device that curbs the sliding pin from leaving the brake release bar. By the spring element, the guiding member stores potential energy for sliding.

Abstract: A roller bearing, which has a brake device made of outer and inner bearing rings, between which rollers roll on corresponding rings, a displaceable braking element connected to one of the bearing rings pressed against an associated opposite surface connected to the other bearing ring to generate a braking effect due to a frictional fit, which can be neutralized by an electromagnet. The electromagnet is made of one of the hearing rings as a soft iron core, and a coil encompassing the ring. A ferromagnetic armature plate is connected to one of the bearing rings and is pressed towards a pressure plate, which is connected to the other bearing ring. At least one disc is disposed between the armature plate and pressure plate. The disc is operationally connected to brake linings on both sides, and each have a form-fit connection to one of the bearing rings by guide pins.

Abstract: A rolling bearing which has a braking device, particularly a rotational connection, with an outer hearing race and an inner bearing race between which rolling bodies are in rolling motion on associated tracks. In order to produce a braking effect using frictional engagement, a displaceable braking element connected to one of the bearing races is pressed against a counter surface connected to the associated other bearing race and the frictional engagement may be removed with the aid of an electromagnet. The braking element is disposed as an integral bearing component inside one of the bearing races and is pressed against the counter surface by spring force, and the electromagnet encompasses one of the bearing races as the soft iron core and a coil surrounding the soft iron core.

Abstract: A rotating electrical machine apparatus comprising a motor generator 10 having a stator (11) to which a plurality of coil groups are provided and a rotor (12), and a control apparatus (30) which controls a current supplied to the coil groups of the stator (11), wherein the stator (11) is provided with a stator friction portion (21) and the rotor (12) is provided with a rotor friction part (19), and the rotor (12) is movable between a connection position, in which the stator friction portion (21) and the rotor friction portion (19) are in contact with each other and the rotor (12) and the stator (11) are connected with each other, and a separation position, in which the stator friction portion (21) and the rotor friction portion (19) are separated from each other, and is constituted to move to the connection position when at least two coil groups among the plurality of coil groups are simultaneously excited, and the control apparatus (30) controls a current supplied to the coil groups so that at least two coil

Abstract: The present embodiments relate to a braking apparatus, in particular for slowing down a carriage, with a brake pad, which is formed using a magnetic material, at least one first spring to press the brake pad onto a surface for the purposes of braking and an electromagnet. The brake pad, the at least one first spring and the electromagnet are disposed and embodied in such a manner that when current flows through the electromagnet a force acts on the brake pad by way of the magnetic material, compensating for the action of the at least one first spring on the brake pad in such a manner that the brake pad assumes a position, in which braking cannot take place due to the pressure of the brake pad. The braking apparatus allows braking independently of the material characteristics of the environment in which the braking apparatus is deployed.

Abstract: Brake equipment, for an elevator installation, includes: a static element; a movable element movable relative to the static element in a first degree of freedom, wherein selectably a first frictional contact is produced in a first contact surface between the static element and the movable element by a controllable normal force acting in a second degree of freedom, and a first friction force opposes movement of the movable element relative to the static element; and a relative element, wherein a second frictional contact is produced in a second contact surface between the movable element and the relative element by the normal force, and a second friction force opposes movement of the movable element relative to the relative element. The relative element is movable in the first degree of freedom relative to the static element between a normal position and a braking position and is resiliently biased into the normal position.

Abstract: A brake includes a frame part; an armature part supported by the frame part in a manner that allows movement; an electromagnet for opening the brake; and also a damping arrangement for damping the noise of the brake. The damping arrangement is made to be conductive to magnetic flux, and the damping arrangement is fitted on the pathway of the magnetic flux of the electromagnet of the brake.

Abstract: A disk brake comprising: a brake disk, a moving disk, a fixed disk, a mounting base, a guide rod, a fixed rod, first and second levers, a fixed plate, and first and second spring clamps. Here, one end of the fixed rod is fixed to a plane of the moving disk, the other end of the fixed rod passes through the fixed disk and is fixed to one end of the first/second lever, and the other end of the first/second lever is fixed to the circumferential surface of the fixed disk on the center line of the fixed disk; the fixed plate is fixed to either the guide rod or the mounting base; one end of the first/second spring clamp is connected to the fixed plate, and the other end of the first/second spring clamp is clamped at the middle position between the first and second levers.

Abstract: An electromagnetic brake (20), in particular for an electric drive is provided, having a brake body (3), which is provided with a sleeve-shaped permanent magnet (4), an electromagnet (5) with an exciting coil (6), an external ring in the form of an external pole and an internal ring (8) in the form of an internal pole, wherein an armature disc (12) rotatably connected to a shaft is attractable against the brake body (3) or the external or internal ring surfaces by the permanent magnet (4) force acting against a return spring force. When the exciting coil is powered, the permanent magnet (4) magnetic field is compensated in such a way that the armature disc (12) is lifted up from the brake body (3) by the spring force, thereby allowing the brake to be released.

Abstract: In some examples, a system includes a brake rotor, a brake armature configured to engage with the brake rotor to substantially fix a rotational position of the brake rotor relative to the brake armature, and a mechanism mechanically coupled to the brake armature. The brake armature may be configured to rotate in a first rotational direction and a second rotational direction substantially opposite the first rotational direction. The mechanism may be configured to maintain the brake armature in a fixed rotational position when a torque applied to the brake armature in a second rotational direction is less than or equal to a threshold torque value. The mechanism also may be configured to permit rotation of the brake armature in the second rotational direction when torque on the brake armature in the second rotational direction exceeds the threshold torque value.

Abstract: An inertia brake assembly is disclosed. In an embodiment, the inertia brake includes a rotor hub subassembly and an inertia brake subassembly. The inertia brake subassembly includes a first reaction plate arranged opposite a first side of the rotor hub assembly, a second reaction plate arranged opposite a second side of the rotor hub assembly, and one or more connector subassemblies connecting the first reaction plate to the second reaction plate. The one or more connector subassemblies include at least one or more resilient straps, and a spacer disposed between the one or more resilient straps and one of the first and second reaction plates. The spacer is arranged about a diameter of the rotor hub subassembly. In an embodiment, the inertia brake assembly includes a sleeve. An inertia brake subassembly is also disclosed.

Abstract: A quiescent-current-actuated electromagnetic spring pressure brake including torque transmission sleeves disposed between a machine wall and the brake, and an axially movable armature plate having bores along its periphery to receive the torque transmission sleeves. At least one piston guide ring is provided in the area of torque transmission sleeves on the outer periphery of the latter adjacent an O-ring disposed in a groove, said piston guide ring being placed in the groove of said O-ring or in a separate groove and acting to provide a damping action in the circumferential direction and a sliding displacement of the armature plate in the axial direction.

Abstract: Method of detecting a braking state of a braking device of a robot drive, having a frame device which, if required, applies braking forces to a rotating component of the robot drive by means of a first movable frame element. As a result, the braking device is shifted into at least two operating states, in particular a closed state or an open state. In the process, during the transition of the braking device from one state into the other, at least one measuring signal is recorded and a braking state is determined by comparing the at least one measuring signal with reference values established beforehand. The invention also relates to a braking device on which the above method can be carried out.

Abstract: A brake assembly (18) includes a permanent magnet (36) that generates a first magnetic field (52) in a direction that causes application of a clamping force on a brake disk (22). An electromagnet (38) is energized with current of a proper polarity to generate a second magnetic field (54) opposite the first magnetic field (52). The rate and magnitude at which current is applied produces a controlled repulsive force between the two magnetic fields (52, 54) to disengage the brake disk (22). As a distance between the permanent magnet (36) and the electromagnet (38) increases, the difference in field strength decreases until an equilibrium position is obtained. The brake is applied and released in a controlled manner by varying the strength of the second magnetic field (54) relative to the first magnetic field generated by the permanent magnet (36).

Abstract: The translation apparatus comprises an elongate track, an elongate fixed member and a stage. The fixed member extends parallel to the track in a fixed lengthwise position relative to the track. The stage is mounted on the track and is capable of movement along the track. The stage comprises a motive force generator, a rotatable member and a rotary brake. The motive force generator is operable to move the stage along the track. The rotatable member is coupled with the fixed member in a manner that converts motion of the stage along the track into rotation of the rotatable member. The rotary brake is selectively operable to apply a braking torque to the rotatable member. The coupling between the rotatable member and the fixed member converts the braking torque applied to the rotatable member into a braking force applied to the stage.

Abstract: A main drive shaft brake for a passenger conveyor includes a braking element, an actuator, and a counter-actuator. The actuator is de-energized to release the braking element and halt operation of the passenger conveyor during an abnormal or emergency condition. An energized counter-actuator permits release of the braking element but, when de-energized, inhibits release of the braking element by the actuator to prevent unintentional release of the braking element caused by, for example, an accidental loss of power to the actuator.

Abstract: An electromagnetic brake contains a coil seat including plural receiving holes disposed on a front end thereof to receive plural compression springs respectively and an electromagnetic coil mounted on the front end thereof; a movable friction piece fitted on the front end thereof; a brake member fixed in a front end of the friction piece and including a transmitting shaft fitted thereon; a fixed member secured on a front end of the brake member, wherein the electromagnetic coil includes a first silicon steel ring, a plurality of slots and a number of elongate grooves, and each slot includes an isolation holder fitted therein, and the isolation holder includes a recess formed on one side thereof to correspond to the groove of the first silicon steel ring, and between two abutting isolation holders is provided with a coil set formed by an enameled copper wire.

Abstract: An arm is pivotally coupled to a support structure at one end and a patient care equipment support, such as a service head, is pivotally coupled to the arm at the other end. The arm has a first portion and a second portion coupled to the first portion for extension and retraction relative to the first portion. Brakes are provided to brake the extension and retraction of the portions of the arm, to brake the pivoting movement of the arm relative to the support structure, and to brake the pivoting movement of the patient care equipment support relative to the arm. Each of the brakes is releasable.

Abstract: A braking mechanism is provided for a hydraulic motor driven wheel utilizing a two-piece design of a hub that rotates by means of a drive shaft. A hydraulic chamber is created on the hub in which a piston resides. The piston is grounded (i.e., non-rotatable relative to the motor housing) in the sealed chamber. The piston face inside of the chamber has a radial set of face teeth. These face teeth are similar to the face teeth inside of the hydraulic chamber. When the chamber is pressurized, the piston face teeth are pushed away from the hub face teeth allowing the hub to freely rotate. When pressure is released from the chamber, a spring, or a number of springs, push the piston into the hub causing it to stop rotating relative to the piston.

Abstract: A disk brake for a traction machine having a damping height of a damping mechanism that can be adjusted integrally. According to one embodiment, a disk brake includes: a static iron core; a spring and a coil assembly in the static iron core; a dynamic iron core assembly including a dynamic iron core, a dynamic disk, and first and second friction rotors configured to fit with the dynamic iron core and the dynamic disk; a plurality of connecting bolts; a plurality of spacers; a damping mechanism on the dynamic iron core assembly, the damping mechanism including a plurality of damping components on the dynamic iron core; an adjusting toothed belt assembly coupled to the damping components and banded to a circumferential outer surface of the dynamic iron core; and an adjusting bracket on the dynamic iron core and coupled to the adjusting toothed belt assembly.

Abstract: An electric motor (102) with passive integral brake (104) includes a stator (204) with one or more magnetic field controllable coils (206) and a rotor (208) with a rotor shaft (210) positioned within an inner diameter (212) of the stator (204). The rotor (208) is operable to rotate about a longitudinal axis (214) of the rotor shaft (210). The electric motor (102) with passive integral brake (104) also includes a brake shoe (302) positioned within the inner diameter (212) of the stator (204) along the longitudinal axis (214) of the rotor shaft (210). The brake shoe (302) is operable to apply a braking force to the rotor shaft (210) and remove the braking force from the rotor shaft (210) responsive to a magnetic field strength produced by the one or more magnetic field controllable coils (206). One or more springs (220) passively apply the braking force.

Abstract: A transmission for coupling a starter-generator electrical machine to an internal combustion engine and having a transmission ratio that is a function of the rotational speed of the internal combustion engine. The ratio of the rotational speed of the electrical machine to that of the internal combustion engine can be increased at a lower rotational speed of the internal combustion engine than at a higher rotational speed of the internal combustion engine. A control device is provided for switching the transmission ratio, which is held by means of spring force in a condition in which the ratio of rotational speeds is high, and as the rotational speed of the internal combustion engine rises increases the transmission ratio is switched to a condition in which the ratio of rotational speeds is lower.

Abstract: An elevator machine (10) includes a motor (12) that rotationally drives a machine shaft (14). An elevator machine brake (20) applies braking force to a disk (22) that is coupled to the machine shaft (14) to slow or stop the rotation of the machine shaft (14). In one example, the elevator machine brake (20) includes a bias member (38) that applies a bias force to a caliper arrangement (32) to provide a braking force on the disk (22). A brake actuator (48) having a shape-changing material moves against the bias force to control engagement between the caliper arrangement (32) and the disk (22). A controller (26) selectively varies the braking force applied to the disk (22) by controlling an electric input to the shape-changing material of the brake actuator (48).

Abstract: An arrangement and a method for supervising the operation of a brake includes a controllable electromechanical brake, including a magnetic circuit with at least two ferromagnetic parts fitted to move in relation to each other. A thrusting force is exerted between the ferromagnetic parts via a spring. The brake includes a magnetizing coil fitted into the magnetic circuit, for forming magnetic attraction between the parts of the brake. The arrangement includes a control of the brake, which includes at least one controllable switch, for adjusting the electricity supply of the magnetizing coil. The control of the brake comprises a supervision of the movement of the magnetic circuit of the brake.

Abstract: An industrial truck with at least one driven wheel, which is adapted to being braked during traveling operation by means of a service brake and which is adapted to being immobilized by a parking brake, comprises a braking force generation and braking force transmission apparatus, which is adapted to generating a braking force and to transmitting it to at least one wheel, preferably a driven wheel, the service brake being actuatable mechanically and/or pneumatically and/or hydraulically, wherein the parking brake is actuatable electromagnetically, and the industrial truck comprises a first armature disk, which is associated with the parking brake, has ferromagnetic material and is movable between an active position, in which it activates the braking force generation and braking force transmission apparatus for generating and transmitting a braking force to the at least one wheel, and an inactive position, in which it does not activate the braking force generation and braking force transmission apparatus.

Abstract: The power-off electromagnetic brake (2) attracts an armature that is pressed by a spring force to a rotating member by a magnetic attraction force that is generated by energizing an exciting coil, and brake force that is acting on the rotating member is released. A voltage control circuit (12) continuously energizes the exciting coil for a fixed length of time and generates a considerable magnetic attraction force in order to attract the armature to a yoke when a brake power source (14) is switched on during brake release. After the armature has been attracted to the yoke, the voltage control circuit (12) intermittently energizes the exciting coil at a set cycle and a set on/off duty ratio to hold the armature in an attracted state to the yoke, thereby reducing power consumption and heat generation.

Abstract: The invention relates to a mounting of one or more electromagnetically bleeding spring-loaded brakes (a, b) on a machine wall or the like. The invention is characterized in that the brakes are, while distributed over the periphery on the face, act upon an axially moving brake rotor (5) with continuous friction linings (6) on both sides (i.e. left and right), whereby braking (left) surface of the friction lining (6) and on the opposite side with the armature discs of the brakes on the second (right) friction lining (6).

Abstract: A control circuit selectively energizes a load, such as an elevator or escalator brake (28). The circuit includes a transformer (12) with a primary-winding connected to a series with a semiconductor switch (40) that is driven by a pulse width modulation (PWM) controller. Power to the PWM controller is supplied through safety relay contacts (52A, 52B). When the load is to be energized, the safety relay contacts are closed and the PWM controller drives the semiconductor switch to supply energy through the transformer to the secondary circuit. A command signal to secondary circuitry (64) causes power in the secondary to be applied to the load (12). If the safety relay contacts open, the PWM controller turns off and power is no longer delivered to the secondary circuit and the load.

Abstract: An electromagnetic brake includes a housing, a pin, brake springs urged against the pin, a handle pivotably secured to the pin, a coil, a moveable armature plate, a moveable friction disc, a trigger switch on the housing and including a projecting contact and a pivotal trigger, steel balls in the half holes of the housing and the handle, and a rod fixedly projecting out of a slot of the handle. In a brake released position, the rod is at one end of the slot with the coil being energized. The handle is adapted to pivot to move the other end of the slot to engage with the rod, the handle contacts and pivots the trigger to enable the trigger switch so as to de-energize the coil, and the springs apply an expansion force to urge against the pin for causing the friction disc to apply brake to a shaft.

Abstract: A control arrangement (100) for an elevator brake, comprises a control circuit (110) adapted to generate, according to a demand for releasing a first braking member of the elevator brake, a first actuating signal and to generate, according to a demand for releasing a second braking member of the elevator brake, a second actuating signal; a first terminal (112) for outputting the first actuating signal to a first electromagnetic actuating means (26) of the elevator brake, a second terminal for outputting the second actuating signal to a second electromagnetic actuating means (30) of the elevator brake; the control arrangement (100) being adapted to allow at least the following modes of operation: A) a normal operation mode in which the first and the second actuating signals are supplied synchronously to the first and second electromagnetic actuation means (26, 30), respectively, and B) a single braking member test operation mode, in which one of the first and second actuating signals is supplied to the respect

Abstract: An electromagnetic brake system and brake for controlling motion between a first machine body (32) and a second machine body (34) is provided. The electromagnetic brake system and brake include an interior core member (36), the interior core member coupling with the first body (32). The electromagnetic brake includes an outer exterior member (38), the outer exterior member enclosing the interior core member, the outer exterior member coupling with the second body.