Abstract: An electromechanical actuator (100) is provided. The actuator comprises an electrical motor (110) controlling a ball ramp mechanism. The ball ramp mechanism is configured to allow for mutual rotation of a first and second rotational member (120, 30) up to a first torque of the electrical motor (110), and to allow for axial separation of the first and second rotational members (120, 130) at a second torque of the electrical motor (110).

Abstract: An actuation transmission apparatus for actuating a component of a switchable valve train device of an internal combustion engine includes: a shaft rotatable by an actuation source; a contacting element for contacting the component of the switchable valve train device; and a biasing device for biasing the contacting element rotationally with respect to the shaft; wherein, in use, the biasing device becomes biased by the shaft when the actuation source rotates the shaft when the actuation source attempts to actuate the component of the switchable valve train device, via the contacting element, when the component of the switchable valve train device is not able to be actuated, whereby the biasing device is configured to cause the contacting element to actuate the component of the switchable valve train device when the component of the switchable valve train device becomes actuatable again.

Abstract: Systems and methods of non-contact tensioning of a metal strip during metal processing include passing the metal strip adjacent a magnetic rotor. The magnetic rotor is spaced apart from the metal strip by a first distance. The systems and methods also include tensioning the metal strip through the magnetic rotor by rotating the magnetic rotor. Rotating the magnetic rotor induces a magnetic field into the metal strip such that the metal strip is tensioned in an upstream direction or a downstream direction. In other aspects, rotating the magnetic rotor induces a magnetic field into the metal strip such that a force normal to a surface of the metal strip is applied to the metal strip.

Abstract: An angle adjustment device of an embodiment includes a first rotational unit and a spring member. The first rotational unit is supported by a frame body, and rotationally moves around a first rotating shaft that passes through the frame body and that is disposed along an opening surface of the frame body, by a driving force of a driving source with an object to be operated. The spring member urges the first rotational unit in a single direction of a rotational direction.

Abstract: A non-contact steering device includes one or more magnetic rotors positioned near a metal strip. Each rotor includes one or more permanent magnets and rotates to impart a changing magnetic field on the metal strip passing nearby. The magnetic rotors can rotate around an axis of rotation that is parallel to the longitudinal direction of travel of the metal strip. The magnetic rotors can be positioned to impart forces on the strip in any combination of laterally, vertically, or longitudinally. A control mechanism can control the rotor speed, rotor direction, vertical position of the rotors, vertical spacing between rotors, and/or lateral position of the rotors. In some cases, the control mechanism can be coupled to sensors, such as a light curtain and a laser distance sensor, in order to provide closed loop feedback control of a metal strip passing through the non-contact magnetic rotor steering device.

Abstract: Methods and systems are provided for a park lock system for an automatic transmission. In one example, a park lock system may include a slideable element coupled to a park rod, a lock slot formed by the slideable element, a cam coupled to an end of a shaft, the shaft positioned within a solenoid and moveable by energization of the solenoid, and a pivotable pawl adapted to couple with the lock slot. In one example, the pivotable pawl is coupled to the lock slot by energization of the solenoid, and a position of the slideable element is locked.

Abstract: An elevator brake braking and holding an elevator car in an elevator system includes a first brake lining having a first actuating device and a second brake lining, which brake linings cause braking in interaction with a braking strip or brake disk. A second actuating device is associated with the second brake lining, and the second actuating device moves the second brake lining toward the first brake lining, if necessary, thus clamping and braking the braking strip or the brake disk between the second and first brake linings. The first actuating device moves the first brake lining toward the second brake lining to clamp and brake the braking strip or the brake disk between the first and second brake linings. The first and the second actuating device operate according to different principles of operation.

Abstract: A product may include a pair of rotating elements. A coupling may be connected between the pair of rotating elements. An actuator may be connected to the coupling and may engage and disengage the pair of rotating elements from each other. A valve may be connected with the actuator and may effect a supply lubrication to the coupling when the pair of rotating elements are engaged through the coupling.

Abstract: An actuator for activating a parking lock, in particular for automatic transmissions in motor vehicles, includes a hydraulic piston which is guided in a cylinder and which activates a locking pawl for a parking lock wheel in the transmission by way of an actuating rod. The piston disengages the parking lock against the force of a preload spring which engages the parking lock in the pressureless state. An electromagnetically activated locking device can positively secure the piston in the disengaged position, with the locking device securing the piston relative to a guide sleeve attached to the cylinder with radially extendable locking elements. To improve system protection, the piston can also be secured in a positively locking fashion by the locking device in the position corresponding to the engaged state of the parking lock.

Abstract: A transaxle and a parking actuator assembly are provided. The parking actuator assembly may include an actuator, a rack, and the biasing member. The actuator may include a pin biased towards an extended position. The rack may be configured to carry a parking rod and may define first and second ramped recesses each configured to receive the pin. The biasing member may be coupled with the rack and may be configured to bias the parking rod towards engagement with a parking mechanism.

Abstract: An electromagnetic active brake which is de-energized in the brake standby state, including—a brake body (1), —a brake device with at least two opposing brake shoes (9, 12) which are spaced from a component to be braked in the de-energized state of the active brake, —and an electromagnet (5) which is arranged in the brake body (1) and the armature (6) of which interacts with a brake lever (2). The armature (6) of the electromagnet (5) is rigidly connected to a spring compressor (3) which is guided in the brake body (1) and which is moved by the armature (6) in the axial direction of the armature (6) when the electromagnet (5) is energized and in this manner clamps a spring (16) against an abutment (20) that interacts with the brake lever (2) and is arranged in an axially adjustable manner in the direction of the path of the spring compressor (3). The active brake according to the invention is highly energy-saving and thus economical.

Abstract: A power generating element includes a magnetostrictive rod through which lines of magnetic force pass in an axial direction thereof, the magnetostrictive rod formed of a magnetostrictive material; a magnetic rod arranged in parallel with the magnetostrictive rod, the magnetic rod formed of a magnetic material; a first coupling mechanism for coupling one end portion of the magnetostrictive rod and one end of the magnetic rod; a second coupling mechanism for coupling the other end portion of the magnetostrictive rod and the other end portion of the magnetic rod; and a coil provided so that the lines of magnetic force pass inside the coil in an axial direction thereof and in which a voltage is generated on the basis of a variation of density of the lines of magnetic force caused when the magnetostrictive rod is expanded or contracted. Further, at least one of the one end portion and the other end portion of the magnetostrictive rod is formed into a male screw portion.

Abstract: A method for operating a parking brake having an electromechanical braking device, which includes an electric brake motor, the electromechanical braking device being re-applied in order to generate a clamping force again in the case of a fault of the release process of the electromotive braking device.

Abstract: A parking brake is provided having the function of monitoring malfunction of the brake, thereby preventing accidents. The parking brake includes an electric motor (10) and a linear motion mechanism (11) which are connected together through a speed reduction mechanism (12). The parking brake further includes a locking pin (50) which can be brought into engagement with the speed reduction mechanism (12) by a solenoid (13). The parking brake further includes a monitoring means for detecting the change in reactance (L) of the solenoid (13). Since the change in reactance (L) as detected corresponds to the displacement of the plunger (53), it is possible to prevent accidents by monitoring deteriorated sliding properties of the locking pin (50) base on the displacement detected.

Abstract: A parking brake control device for a transport vehicle is attached to a vehicle body including a parking brake (17) of a negative control type for maintaining a state in which rotation of wheels is stopped, the parking brake control device including a control unit (32) for controlling movement of a spool (21) for magnetizing or demagnetizing a solenoid valve (25) to release or actuate the parking brake (17). The control unit (32) includes a stop determining section (33) that determines whether the vehicle body stops traveling, an actuation command section (34) that actuates the parking brake (17) when the stop determining section (33) determines that the vehicle body is stopped, and a release command section (35) that releases the parking brake (17) after elapse of a preset setting time after the actuation of the parking brake (17) is started by the actuation command section (34).

Abstract: What is presented is a mechanical arm assembly with a novel roller thrust bearing. The mechanical arm assembly comprises a first arm having a first end and a second end. A first roller thrust bearing is mounted to the first end and to a ceiling. A second roller thrust bearing mounted to the second end. Each roller thrust bearing comprises a first bearing body and a second bearing body able to rotate relative to each other. Each roller thrust bearing has a solenoid powered brake comprising two brake shoes each with a high friction brake pad mounted to a hinge body affixed to the first bearing body, a brake drum mounted to the second bearing body, a tension spring pushing the brake shoes against the brake drum, and a mechanism for disengaging the brake shoes from the brake drum. The mechanism comprises a slider body with space for two pins, two ball bearings, and a plunger with sloped surfaces on one end and a mounting provision on the other. A solenoid is attached to the mounting provision.

Abstract: A magnetic brake has an outer stator surrounding an inner stator with a circumferential slot between the outer stator and the inner stator. A coil is provided in the inner stator adjacent to the circumferential slot. A drag plate is attached to a rotatable shaft extending centrally through the inner stator. A drag ring joined to the drag plate extend into the circumferential slot. The drag ring may be an annular cylindrical ring section separate from the drag plate. Vent holes pass through the inner stator adjacent and parallel to the shaft. The magnetic brake uses both hysteresis and eddy current braking.

Abstract: An electromagnetic brake (10) including a plurality of elastic members (25) which are arranged between an engagement surface of a brake pad (13) and an engagement surface of a hub (12) symmetrically about a center of rotation of the shaft (11). The biasing directions of the plurality of elastic members are in a rotational direction of the shaft.

Abstract: A brake apparatus for restraining rotation of a wheel of a vehicle by application of a brake that is to be activated for causing a friction member, to be pressed against a brake rotor, through a piston that is movable in an axial direction of the piston. The brake apparatus includes: (a) a power drive device; (b) a driven member that is to be moved, by the power drive device, relative to the piston in the axial direction; and (c) an engaging portion that is provided in one of the driven member and the piston, such that the piston is held in engagement with the driven member through the engaging portion. The engaging portion is disposed such that, during release of the application of the brake, the piston is movable rearwardly while being held in engagement with the driven member through the engaging portion.

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 controllable brake includes a housing and a rotor supported on a shaft. The rotor is housed within a chamber containing a field controllable material which is acted upon by a magnetic field generator to impede movement of the rotor. The shaft is supported by bearings. The controllable brake housing defines 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: 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: An elevator assembly (20) includes braking devices (30) for controlling movement of an elevator car (22). A braking device (30) includes an electrical actuator (62) for controlling relative movement between a carriage (42) and a base (40) that is mountable on the elevator car (22). Relative movement between the carriage (42) and the base (40) results in at least one braking member (46) following a surface (60) on the base (40) for movement between a released position and a braking position.

Abstract: The invention refers to a locking unit, in particular a transmission locking unit. It consists of a coil encircling at least partly an armature space. The coil has a wire that can be flown through by electric current. An armature rod projecting out of the armature space and carrying an armature is provided, as well as an operating element locking unit interacting with the armature rod. This holds or releases, depending on the position of the armature rod, an operating element, wherein the armature rod or the armature is held in a first position by a permanent magnet, and a current flow through the wire of the coil compensates the holding force of the permanent magnet, and the armature rod gets in the second position.

Abstract: A disk brake for a vehicle, includes: an electric motor which has a motor shaft provided with an armature and which is attached to a caliper body so as to exhibit a power for urging a friction pad toward a disk rotor; and a Hall IC for detecting a rotational angle of the electric motor. The Hall IC is disposed within the electric motor so as to be located on an outer side of a pulser mounted on the motor shaft, and is retained by a motor case of the electric motor and a sensor cover made of a synthetic resin and detachably attached to the motor case. Thus, it is possible to reduce the number of parts by eliminating a special sealing measure.

Abstract: What is presented is a mechanical arm assembly with a novel roller thrust bearing. The mechanical arm assembly comprises a first arm having a first end and a second end. A first roller thrust bearing is mounted to the first end and to a ceiling. A second roller thrust bearing mounted to the second end. Each roller thrust bearing comprises a first bearing body and a second bearing body able to rotate relative to each other. Each roller thrust bearing has a solenoid powered brake comprising two brake shoes each with a high friction brake pad mounted to a hinge body affixed to the first bearing body, a brake drum mounted to the second bearing body, a tension spring pushing the brake shoes against the brake drum, and a mechanism for disengaging the brake shoes from the brake drum. The mechanism comprises a slider body with space for two pins, two ball bearings, and a plunger with sloped surfaces on one end and a mounting provision on the other. A solenoid is attached to the mounting provision.

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: An electromagnetically released spring-loaded brake for cooperation with a motor or similar, with the manual release of the brake being effected in a tangential direction by means of a manual release lever 9, and with actuation of the manual release lever 9 causing armature disc 3 to be urged towards coil carrier 1 via three or more transmission levers 10 mounting rolls 16 and camming surfaces 14 on armature disc 3. As a result, the width of the air gap between armature disc 3 and coil carrier 1 is reduced so that rotor 6 with its hub 4 will be free to rotate between friction linings 7 on armature disc 3 and flange plate 8. The object was to create a lockable manual release feature the actuation of which requires a low manual force on manual release lever 9, is very flat and compact in structure, has a relatively small diameter and is actuated in a tangentional direction (FIG. 1).

Abstract: An electric braking or clutching device includes a housing; an armature having an axis and disposed at the housing, the armature and the housing defining a radial air gap therebetween; and a coil configured to generate, when energized, a magnetic field at the housing and armature, a flux path of the field extending from the coil into the armature, from the armature into the housing, and from the housing back to the coil, with the direction of the flux path from the armature into the housing being substantially radial in orientation.

Abstract: The present invention is a live saving devise to quickly assist those involved in an imminent accident and panic to respond to apply the vehicle's brake pedal. This devise with the push of the button #2 applying a positive current #1A to activated the solenoid #5, for a quick action to stop the vehicle. This action function as follow: When Push-Pull switch #2, is push down, it electrically activate solenoid #5. A magnetic force is produced retracting piston and pull rod #9, at the same time brackets #6A and #6B, pull down the existing brake pedal #3, as result of these actions the existing brake pump #4 is push producing a hydraulic pressure to be transmitted to each wheel's brake cylinders expanding the brake fiber bands again the wheel's wall of the steel wheel's drum, or in a disk-brake system, getting the vehicle to stop, and stop stay until the push-pull switch is pulled up, releasing the magnetic action of the solenoid #5 making the vehicle's wheel free.

Abstract: In an electric brake of the present invention, a plunger of an actuator is connected through a pin to a pivot arm to which an engaging pawl engageable with a tooth portion of a ratchet is pivotably attached. A lower surface (a force-receiving portion) of the pin is adapted to receive an upward force which is applied by a tool inserted through a bolt hole threadably engaged with a watertight bolt. When the parking brake is operated (the engaging pawl is engaged with the tooth portion of the ratchet), if supply of current to the coil becomes impossible, the pin is moved upward by means of the tool, to thereby separate the engaging pawl from the tooth portion. Therefore, an emergency action to release the parking brake can be manually conducted.

Abstract: A method for the operation of a hydraulic vehicle brake is provided. The brake includes a brake housing in which a hydraulic working pressure chamber is delimited by a displaceable brake piston, which is movable into operative connection with a brake disc in order to achieve a braking effect. A parking brake device acts on the brake piston and, in a condition where the brake piston is in operative connection with the brake disc, is lockable by a locking device. The locking device is activated by a force-transmitting element, which is operable by an electromagnetic actuator with at least one coil, one yoke and one armature, wherein the position of the force-transmitting element connected to the armature is determined because the change in inductance of the coil is determined depending on the armature movement in such a way that the result of the determination is independent of the ambient temperature.

Abstract: An electro-hydraulic control system is provided that utilizes a shift solenoid and shift valve to multiplex a single pressure control solenoid to control both modulation of a main pressure regulator valve and retarder operation (fill and pressure).

Abstract: An electric actuator for an automatic transmission includes an adapter to transmit rotary motion between the adapter and the automatic transmission. An electric motor has an output shaft operably connected to the adapter by a gear set which includes a ring gear. The gear set reduces speed and increases torque supplied by the output shaft of the electric motor and applied to the adapter. A release mechanism is operably connected to the gear set and includes a lock member movable between a first position wherein the lock member is in engagement with the ring gear to lock the ring gear against rotary motion in both directions and a second position wherein the lock member is out of engagement with the ring gear to permit rotary motion of the ring gear in both directions.

Abstract: An actuator for an electro-mechanical-brake motor assembly includes a housing surrounding a rotatable motor shaft presenting a longitudinal axis. A spring is non-rotatably supported on the housing. A latching device is non-rotatably supported by the housing. The latching device has a plurality of teeth. A latch gear is non-rotatably supported on the rotatable motor shaft and circumscribes the longitudinal axis and presents a plurality of axially facing angled teeth presenting a meshing engagement with the teeth of the latching device. The latching device is axially movable relative to the housing in response to magnetic force generated by the electric coil.

Abstract: A brake structure for a roll-up door includes a brake drum fixed to a transmission shaft of a speed reducer. The brake drum receives a pair of brake shoes in opposite inner sides thereof. The brake shoes are pivotably connected to each other at an end of each brake shoe. A linking resilient member is connected between the free ends of the brake shoes. A brake pad is attached to a surface of each brake shoe facing the inner surface of the brake drum. A controlling lever is disposed at the top of the speed reducer corresponding to the free ends of the brake shoes. One end of the controlling lever is connected to an end of a fixing resilient member. The other end of the fixing resilient member is connected to a moving iron of a first solenoid. A clasping block is connected to the moving iron of the first solenoid. The other end of the controlling lever is connected to a moving iron of a second solenoid.

Abstract: An electric actuator for an automatic transmission includes an adapter to transmit rotary motion between the adapter and the transmission. An electric motor has an output shaft operably connected the adapter by a gear set which includes a ring gear. A release mechanism includes a solenoid which selectively moves a lock member. In a first position, the lock member engages the ring gear to lock the ring gear so that the adapter is rotated by rotary motion of the output shaft and the adapter rotates to a predetermined zone about a desired gear position. In a second position, the lock member is out of engagement with the ring gear to permit rotation of the ring gear so that the adapter is rotated by internal forces of the transmission and the adapter automatically self-aligns to the exact desired gear position when the adapter is within the predetermined zone.

Abstract: A brake transmission shift interlock actuator includes a bobbin that has an open end and a closed end. A plunger is slidably disposed within the bobbin and a plunger rod extends from the plunger. Moreover, a primary plate is installed within the open end of the bobbin. The plunger is movable between an unlocked position, wherein the plunger rod does not extend through the primary plate and a locked position, wherein a first end of the plunger rod extends through a bore formed by the primary plate. Further, a magnetic force of attraction between the plunger and the primary plate diminishes as the plunger approaches the primary plate.

Abstract: A torque transfer limiting arrangement for a rotational drive shaft. The arrangement includes a torque sensing device for sensing torque within the drive shaft and outputing a signal indicative of the sensed torque. A braking device of the arrangement is actuatable for stopping the drive shaft from rotating. The arrangement also includes a portion for electrically causing operation of the braking device responsive to the signal indicative of the sensed torque above a predetermined value. In one example, the portion for electrically causing operation of the braking device includes a processor. In one example, the rotational drive shaft is part of an aircraft flap actuator system.

Abstract: A brake caliper with an integral parking brake. The brake caliper includes a housing having a bore with tapered walls, a piston having a rod mounted within the bore, a wedge element positioned between the rod and the tapered walls and displaceable to a locking position and a release position, a resilient element positioned to displace the wedge element to the release position, and a locking element for selectively displacing the wedge element to the locking position. When the locking element is momentarily actuated while a hydraulic pressure is present, the wedge element is urged to the locking position, thereby holding the brake caliper in a braking position when the hydraulic pressure is removed and then the locking element is de-actuated. A hydraulic pressure sufficient to cause the resilient element to urge the wedge element to the release position is effective to release the caliper.

Abstract: An anti-theft vehicle system for a vehicle wheel having a rotational axis includes a linear actuator disposed within the vehicle wheel for operatively engaging and disengaging an interior surface of the vehicle wheel to resist and allow rotational movement of the vehicle wheel about the rotational axis. The anti-theft vehicle system further includes a receiver mounted within the vehicle wheel to receive a signal to activate the linear actuator.

Abstract: A remote brake release for elevator drive machine brakes includes a release lever attached to a shaft coupled by a clutch to a bellcrank. The clutch is normally engaged and can be a spring clutch or a friction type disc clutch. Movement of the lever to rotate the shaft moves the bellcrank which is coupled to a brake release mechanism. A solenoid is actuated to disengage the clutch preventing release of the brake. The solenoid can be connected to a control circuit responsive to a speed of rotation of the drive machine motor.

Abstract: A torque transfer limiting arrangement for a rotational drive shaft. The arrangement includes a torque sensing device for sensing torque within the drive shaft and outputing a signal indicative of the sensed torque. A braking device of the arrangement is actuatable for stopping the drive shaft from rotating. The arrangement also includes a portion for electrically causing operation of the braking device responsive to the signal indicative of the sensed torque above a predetermined value. In one example, the portion for electrically causing operation of the braking device includes a processor. In one example, the rotational drive shaft is part of an aircraft flap actuator system.

Abstract: A brake coupling combination for a motor, preferably an electric motor, consisting of a brake which can be attached to the motor, the brake having a flange (1) with which it is directly connected to a correspondingly shaped part of the motor, characterized in that the brake is mounted on the end of the shaft (9) of the motor by means of a hub (4) and that a flexible coupling (K) connects directly to the brake for connection to a second shaft.

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: To accurately detect a trouble of a magnetic brake (2) by eliminating any effect of a temperature of a location at which an elevator is installed, a temperature sensor (3) is arranged to measure a temperature of the magnetic brake (2). When an armature (2c) has been attracted responsive to a brake release command, the temperature of the magnetic brake is measured as a first temperature, and before the armature returns responsive to a brake actuation command, the temperature of the magnetic brake is measured as a second temperature. The first and second temperatures are compared with each other. When a result of the comparison between the first and second temperatures is determined to be greater than a predetermined value, the magnetic brake (2) is determined to have been locked and hence, to have developed a trouble.

Abstract: In a brake system for a linear actuator comprising: a pair of guide rail members (4), a table (3) including at least a pair of sliders (2a to 2d) which slide along the guide rail members, a linear motor (6 and 7) for actuating the table along the guide rail members, and a brake unit incorporated in one of the sliders, the one slider is provided with a moveable slide block (16) that is supported by the slider (2a) so as to be moveable toward and away from the guide rail surface and a power actuator (8a and 8b, 21 and 30) for selectively moving the slide block toward the guide rail surface. The sliders thus serve the dual purposes of guiding the motion of the table along the guide rail and braking the motion of the table.

Abstract: The present invention relates to a combined service and parking brake system, especially for automotive vehicles, which includes a hydraulically clampable combined service and parking brake with a mechanical locking device. The mechanical locking device is electrically operable and thus satisfies in a simple fashion the parking function of the hydraulically clamped combined service and parking brake.

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: A friction safety brake which is released by virtue of an electromagnet is disclosed. Extending from a machine wall is a shaft that is rotatable relative to the machine wall. The shaft is to be braked by the friction safety brake. The brake includes: a first assembly comprising a coil carrier, a coupling element, a flange plate, at least one first brake disk and an intermediate disk; and a second assembly comprising an armature disk, at least a second brake disk and the intermediate disk. The flange plate is coupled in an axial direction with the coil carrier by virtue of coupling elements and is independently movable relative to the armature disk in the axial direction such that two braking circuits are available. The first braking circuit includes the armature disk, the coil carrier and the flange plate (21) coupled to each other in the direction of rotation.