Abstract: An articulating assembly for an adjustable bed has side supports received on side rails of a bed frame. A first axle extends between the side supports and a second axle extending between the side supports defining a fixed center section. An upper body support frame has a first torque tube concentrically received on the first axle. A thigh support frame has a second torque tube concentrically received on the second axle. A first actuator assembly supported in the center section is operably attached to rotate the first torque tube to articulate the upper body support frame over a range of positions from a horizontal unarticulated position to a fully articulated position. A second actuator assembly supported in the center section is operably attached to rotate the second torque tube to articulate the thigh support frame over a range of positions from a horizontal unarticulated position to a fully articulated position.

Abstract: A motor stop mechanism serves as a stop limit for a motor including an output shaft. The motor stop mechanism includes a motor mounting surface to which the motor is attachable, where the motor output shaft is positionable through the motor mounting surface. A coupler is fixable to and rotatable with the output shaft, and a threaded drive shaft is fixed to and rotatable with the coupler. A trunnion threaded on the threaded drive shaft is displaceable on the threaded drive shaft with rotation of the threaded drive shaft. The trunnion is displaceable between a retracted position and an extended position by forward and reverse rotation of the threaded drive shaft. A stop limit defines the extended position of the trunnion. In use, when the trunnion reaches the stop limit, the motor is stopped.

Abstract: Clutch-based adjustment mechanism for motorized multi-way seat adjustment An adjustment mechanism comprises multiple screw shafts (111, 112, 113) and a motor (150) for driving the screw shafts. Further, the adjustment mechanism comprises a clutch mechanism (160) for selectively engaging the motor (150) with one or more of the screw shafts (111, 112, 113). A rotation of one or more of the screw shafts (111, 12, 113) caused by the motor (150) translates into adjustment of the seat according to a first degree of freedom. A rotation of one or more others of the screw shafts (111, 12, 113) caused by the motor (150) translates into adjustment of the seat according to a second degree of freedom.

Abstract: This locking device for an electromechanical actuator comprises a rod that is movable relative to a cylinder under the action of a motor actuating the rod, an assembly of at least one hook that can be moved between a locked position in which said hooks engage in an indentation and an unlocked position in which said set of hooks is released from the indentation, one of said set of hooks and the indentation being provided on the cylinder and the other on the rod. It comprises a sliding lock that can slide relative to said hooks and to the indentation between a holding position in which said hooks are held in the locked position a released position in which said hooks are released under the action of the motor actuating the rod.

Abstract: A steering actuator comprising a shaft having an input coaxial with an output, wherein the output is in drivable communication with one or more wheels of a vehicle, and a locking mechanism configured to enable the shaft to rotate in both a first direction and a second direction in response to torque provided at the input, and prevent the shaft from rotating in both the first direction and the second direction in response to torque provided at the output.

Abstract: A safety device for a lock mechanism may have a housing that encapsulates the lock mechanism. The housing may have at least one opening, through which at least one adjustment element coupled to the lock mechanism is guidable. The at least one opening may have a sealing element. A seat track for a seat is also disclosed. The seat track may have a first track assembly with at least one track member, a second track assembly with at least one further track member, and a lock mechanism configured to lock an adjustment of the seat.

Abstract: A damper and spring unit includes a damper having a cylinder and a rod extending along a first axis (z), a spring plate arranged around the cylinder and slidable with respect to the cylinder along the first axis (z), a spring resting at its bottom on the spring plate, and an electro-mechanical adjustment device interposed between the cylinder and the spring plate for adjusting in a continuous and controlled manner the vertical position of the bottom end of the spring and the height of the vehicle from the ground. The adjustment device includes an electric motor generating a rotary motion and a motion conversion mechanism having one screw extending along a second axis (z?) parallel to the first axis (z), but spaced therefrom, and driven into rotation by the electric motor about the second axis (z?), and a nut meshing with the screw and drivingly connected for translation with the spring plate.

Abstract: The invention relates to a spindle drive, comprising a drive unit, a spindle, and a spindle nut in threaded engagement with the spindle, the spindle nut being driven by the drive unit by means of a drive element, and wherein the spindle nut is mounted on the drive element in such a way that the spindle nut and the spindle in threaded engagement with it are pivotable relative to the drive element.

Abstract: A steering system with an actuating device (1), in particular a rear axle steering system, having a spindle drive (3) with a spindle (5) and a spindle nut (4) which is fitted into the housing (2) of the steering system in a positionally fixed but rotatable manner and is driven by an electric motor (9). The electric motor (9) is a vernier motor that drives the spindle drive (3) and is integrated in the spindle drive (3). The actuating device (1) is used for a rear axle steering system of a motor vehicle.

Abstract: A linear actuator, for controlling movement of a control surface of an aircraft, includes a screw, a primary load path and secondary nut engaged with the screw, and an engagement member. The engagement member moves from an ambush position, maintained by the primary load path or the secondary nut, to an engaged position, restricting relative movement between the primary load path and the secondary nut. The restricted relative movement may occur in response to free relative axial movement of the primary load path and the secondary nut caused by a failure of the primary load path of the linear actuator. A sensor of the linear actuator is configured to sense the failure of the primary load path and the free relative axial movement of the primary load path and the secondary nut.

Abstract: A self-locking nut and screw assembly may include a screw and a first nut rotatable and linearly translatable with respect to each other. The assembly may also include a first motor configured to provide torque to one of the screw and the first nut. The assembly may further include a locking mechanism configured to lock the screw to prevent backdrive when the motor is not providing torque to the one of the screw and the first nut.

Abstract: Provided is a ball screw device (31), including: a ball screw shaft (33); and a ball screw nut (32) which is rotatably fitted to an outer periphery of the ball screw shaft (33) through intermediation of a plurality of balls (34), wherein the ball screw shaft (33) performs a linear motion in an axial direction along with rotation of the ball screw nut (32), wherein the ball screw shaft (33) has a hollow shape having a hole portion (33b) extending in the axial direction, and wherein a stroke detection sensor (55) configured to detect an amount of displacement of the ball screw shaft (33) in the axial direction is arranged in the hole portion (33b).

Abstract: A torque limiter (120) includes a coil spring (124), an inner shaft which is connected to a drive shaft (58) and is disposed to be inserted into a coil portion of the coil spring (124) so that the coil portion of the coil spring (124) is configured to come into close contact with an outer peripheral surface, a bottomed cylindrical outer member (122) which is disposed at the outside of the coil portion with a gap interposed therebetween and is provided relatively rotatable with respect to the inner shaft so that both end portions of a wire forming the coil spring (124) are locked thereto, and a drive gear (123) which is integrally formed with a plate portion (122a) of the outer member (122) and is configured to transmit a rotational force to the screw shaft.

Abstract: A screw actuator, includes: a screw comprising a first helical contact surface and a first helical raceway surface; a nut comprising a second helical contact surface and a second helical raceway surface; and a plurality of ball bearings in a helical raceway formed by the first helical raceway surface and the second helical raceway surface. When the screw is loaded relative to the nut in a first axial direction, the first helical contact surface is compressed against the second helical contact surface. When the screw is loaded relative to the nut in a second axial direction, the plurality of ball bearings are compressed between the first helical raceway surface and the second helical raceway surface.

Abstract: A spool valve includes a spool in a spool insertion hole defined in a valve body. The spool is configured to be moved by an electric motor via a ball-screw to a first position where an input port is in communication with an output port, while the output port is not in communication with a drain port, and to a second position where the input port is not in communication with the output port, while the output port is in communication with the drain port.

Abstract: A selectively self-locking actuator includes a threaded shaft having a first threaded portion and a second threaded portion. The first threaded portion includes a semicircular ball screw threadform and the second threaded portion includes a power screw threadform. The actuator further includes a ball nut mated to the first threaded portion, a split nut selectively mated with the second threaded portion, and a nut coupler plate configured to secure the ball nut and split nut at a fixed distance from each other. The split nut includes at least a first split nut portion and a second split portion each mated to a spring and a driver. The spring is configured to bias the first split nut portion and the second split nut portion either radially inward or radially outward with respect to the threaded shaft, and wherein the driver is configured to selectively oppose the bias of the spring.

Abstract: There is provided an actuator for use in a thrust reverser of an aircraft, comprising a screw shaft and a nut translatable along the shaft between a retracted position and an extended position, a tine component comprising tine fingers formed with projections that are configured to engage formations on the nut when the nut occupies its retracted position to secure the nut against axial movement, and a movable lock member engageable with the tine fingers to restrict radial movement of the tine fingers in a first position, the lock member movable between the first position and a second position in which the lock member does not restrict radial movement of the tine fingers. The lock member is movable between the first position and the second position by means of an electromagnetic actuator.

Abstract: The invention relates to a ball screw including a spindle nut arranged on a lead screw, and balls, which roll on ball grooves of the spindle nut and of the lead screw, and a circumferential stop on the screw side and a circumferential stop on the nut side, the spindle nut being arranged in a sleeve surrounding the ball nut, the sleeve is formed from sheet metal by shaping and the nut-side circumferential stop is formed integrally on the sleeve.

Abstract: Embodiments of reduced pressure systems and methods for operating the systems are disclosed. In some embodiments, a system can include a source of negative pressure and a controller configured to present GUI screens for controlling and monitoring operation of the system. The controller can be configured to receive, via the GUI, an adjustment of a negative pressure therapy parameter and adjust (or cause adjustment) of the operation of the negative pressure source based on received adjustment. The controller can be further configured to record historical data parameters associated with negative pressure therapy parameters. The controller can also be configured to transmit (or cause transmission) over a communication channel at least some of recorded historical data. The system can be configured to provide external connectivity for accomplishing various activities, such as location tracking, compliance monitoring, tracking of operational data, remote selection and adjustment of therapy settings, etc.

Abstract: An apparatus and method for forming a releasable lockable lap bar assembly that optimizes the resistance against lap bar axle and lap bar connecting arm slippage. The invention involves the use of a plurality of splines on the end of the lap bar axle that is coupled within a stop sleeve in the distal end of the lap bar connecting arm. The stop sleeve also includes a plurality of splines aligned with an axis of the sleeve. The plurality of splines on the lap bar axle are aligned with a lap bar axis. When the splined end of the axle is inserted into the stop sleeve, the respective plurality of splines interdigitate to form a tight engagement of the lap bar axle and the connecting arm. Bolts in apertures of the stop sleeve can also be used to further prevent the lap bar axle from backing out of the sleeve.

Abstract: It is the intention for a linear unit (7) for imparting an axially acting force, having a rotational-translational gear (8), in particular a ball screw, which has a threaded spindle (1) and a threaded nut (2), and having a force transmission element (3), which is in particular in the form of a thrust rod or thrust tube, to be improved such that fewer components are required and the assembly of the linear unit is kept as simple as possible. For this purpose, the threaded nut (2) and the force transmission element (3) are connected to one another by means of a positively locking, in particular play-free connection, in particular by means of clinching.

Abstract: A ram air turbine system includes an actuator having a threaded portion, a rod having a threaded region at or near one end and an eyelet at an opposite end, and a bushing. The bushing has a first thread engaged with the threaded portion of the actuator, and a second thread engaged with the threaded region of the rod, such that an actuation force can be transmitted between the actuator and the rod through the bushing. The first and second threads of the bushing have different pitches.

Abstract: A fixation member is circularly formed to surround a wheel turning shaft and includes an abutment surface in abutment with an end surface of a bearing on one axial side. The fixation member fixes the bearing to a housing by being fixed in the housing with the abutment surface in abutment with the end surface of the bearing. When being mounted, the fixation member is provided by being moved from an opposite axial end side to one axial end side of the nut. The abutment surface of the fixation member is formed on at least a radially inner side of the fixation member. The fixation member includes a cutout portion provided on the radially inner side of the fixation member and formed to prevent interference with a circulation member when the fixation member is inserted in the housing.

Abstract: A disk brake system includes a disk, brake pads, and a linear motion actuator including an electric motor, a rotary shaft coupled to the motor through a reduction gear mechanism, planetary rollers formed with helical grooves in their outer surfaces, and an outer ring member having a helical rib engaged in the helical grooves. The outer ring is coupled to one of the brake pads. When the rotary shaft is rotated by the motor, the outer ring member is moved axially through the planetary rollers, and the brake pads are pressed against the disk. The linear motion actuator further includes a locking mechanism including engaging holes formed in an intermediate gear of the reduction gear mechanism at equal intervals, a locking pin, and a linear solenoid for moving the locking pin until the pin engages in one of the engaging holes, thus locking the motor.

Abstract: A driving device for a hatch in a vehicle with a first housing part connectable to a stationary base part or a movable structural component part, a second housing part connectable to the other, of the movable structural component part and the stationary base part, a spindle drive by which the first and second housing parts are movable axially relative to one another, a rotary drive that drives the spindle drive in rotation including a motor and a gear unit accommodated in a gear unit housing, and a braking device. The spindle drive includes a threaded spindle that has a first spindle portion and a braking spindle nut that is axially movable on the first spindle portion and a second spindle portion and a working spindle nut axially movable on the second spindle portion. The braking spindle nut cooperates with the braking device for applying a holding force to the spindle drive.

Abstract: An actuator arrangement comprises a rotatable shaft, a nut mounted upon the shaft and translatable along the shaft upon rotation of the shaft relative to the nut, and a lock arrangement operable to lock the shaft and nut against relative rotation, the lock arrangement comprising a lock component mounted upon one of the shaft and the nut for axial movement relative thereto but held against angular movement relative thereto, the lock component being co-operable with an abutment provided on the other of the shaft and the nut, or a component associated therewith, to lock the shaft and nut to one another against relative rotation.

Abstract: An actuator for driving a release mechanism of a clutch includes a motor, an output member, a ball screw mechanism, a trapezoidal screw mechanism and a power transmission mechanism. The output member is coupled to the release mechanism, and is movable in an actuation direction of the release mechanism. The ball screw mechanism is configured to convert rotation of the motor in one direction into movement of the output member in a first axial direction. The trapezoidal screw mechanism has a self-lock function against a reverse driving force from the release mechanism, and is configured to convert rotation of the motor in the other direction into movement of the output member in a second axial direction. The power transmission mechanism is configured to selectively transmit rotation of the motor to the ball screw mechanism or the trapezoidal screw mechanism.

Abstract: The invention relates to an actuating device (1) for moving a mobile cap of a thrust reverser, comprising: —an actuator comprising a first element (3), such as a screw, and a second element (4), such as a nut, collaborating with the first element in such a way that turning the first element causes the second element to move in a translational movement, —a locking piece (18) rotationally mobile between a locked position in which the locking piece prevents the first element (3) from turning, and an unlocked position in which the locking piece (18) allows the first element (3) to turn, and —an unlocking piece (25) rotationally mobile between an active position in which the unlocking piece (25) urges the locking piece (18) towards the unlocked position and a passive position in which the unlocking piece (25) allows the locking piece (18) to return to the locked position.

Abstract: A fine adjustment mechanism includes a connecting unit and a fine-tuning bolt having a bolt shaft and a bolt head. The bolt shaft has a threaded section rotatably engaged with the connecting unit, a non-threaded section between the threaded section and the bolt head, and an annular protrusion projecting outwardly and radially from an outer surface of the non-threaded section and spaced apart from the bolt head. A retaining unit is molded over the fine-tuning bolt and covers the annular protrusion and portions of the non-threaded section which are proximate to two opposite annular end surfaces of the annular protrusion. The fine-tuning bolt is rotatable relative to the retaining unit. The connecting unit is movable along the threaded section when the fine-tuning bolt is rotated.

Abstract: A chassis actuator adjusting a movably mounted component of a chassis, which has a first actuator component connected to the movably mounted component and a second actuator component connected to a fixed chassis component. The actuator components are adjustable axially by a ball screw that has a threaded spindle and a nut which runs on spindle. The nut is driveable by a drive motor that has a rotor coupled to the nut and a fixed stator arranged axially symmetrically with respect to the nut. The rotor is coupled to the nut by a wrap spring which radially surrounds the nut and via which the nut is rotated during rotation of the rotor and which forms a brake device. The brake device can be actuated by an external chassis force which acts on and rotates the nut and builds up a friction moment that counteracts the rotation of the nut.

Abstract: In one arrangement, a motor assembly includes a housing defining a housing chamber, a stator disposed within the housing chamber, and a rotor assembly disposed within the housing chamber. The rotor assembly includes a spindle housing defining a spindle housing chamber extending along a longitudinal axis of the spindle housing and a set of magnets disposed about an outer periphery of the spindle housing and in proximity to the stator. The rotor assembly includes a ball nut cartridge disposed within the spindle housing chamber of the spindle housing and a securing mechanism configured to secure the ball nut cartridge to the spindle housing.

Abstract: A method of locking a linear output member in a retracted position within a linear actuator, where the linear output member is capable of axial motion within a housing of the linear actuator, includes rotating a generally tubular rotor disposed within a rotary lock assembly of the actuator to a first rotor position, and shifting a lock capable of radial displacement within the rotary lock assembly based on rotating the rotor to the first position. The lock engages a radial groove of the linear output member when the linear output member is in a retracted position. The rotary lock assembly is constrained from axial motion. The radial groove of the linear output member includes an axially angled, substantially planar surface. The lock is configured to include an axially angled surface shaped complimentary to the axially angled, substantially planar surface of the radial groove.

Abstract: A moving device is disclosed. A moving device includes a driving unit comprising a rotary shaft that is rotatable in a forward direction and a reverse direction by air pressure, a power delivery unit connected to the rotary shaft and adapted and configured to convert rotary motion of the rotary shaft to linear motion.

Abstract: A spindle drive having a threaded spindle driveable in a rotational fashion, a carriage adjustable via the threaded spindle along a guide rail, and several guide carriages arranged in front and behind the carriage in the feed direction to support the spindle, with the guide carriages arranged in front of the carriage in an accumulating motion being pushed together successively by the carriage towards the spindle end, and with the guide carriages arranged behind the carriage being entrained by a coupling mechanism and moved into allocated support positions. Coupling elements are provided on the guide carriages and the carriage, that cooperate together and can be operated by switching elements fixed on the guide rail, by which the guide carriages arranged in front of the carriage are automatically coupled during the successive displacement motion, and by which the entrained guide carriages upon reaching their support position are automatically decoupled and fixed.

Abstract: A linear actuator with a reversible electric motor (3,11,26,27,34), which over a transmission (4,12,24,25,35) drives a non-self locking spindle (5,14,22,23,36), by which a tube-shaped positioning element can be moved axially, in that it with one end is connected to a spindle nut (6,15) on a spindle (5,14,22,23,36). The actuator comprises a quick release (9,13) for releasing the tube-shaped positioning element (7,16,28,29,37) from the electric motor (3,11,26,27,34) and the part of the transmission (4,12,24,25,35) that lies from the motor (3,11,26,27,34) to the quick release (9,13) such that the spindle (5,14,22,23,36) is set to rotate by the load on the tube-shaped positioning element (7,16,28,29,37). The actuator further comprises braking means for controlling the speed of the tube-shaped positioning element (7,16,28,29,37) during the outer load, when the quick release (9,13) is activated.

Abstract: An automatically locking actuator includes a first end connector, a rotatable drive screw operably coupled to the first end connector, a nut assembly threadably mounted on the drive screw, a second end connector operably coupled to the nut assembly and a rotary lock having a rotor and where the actuator moves between extended and retracted positions in response to rotation of the rotor.

Abstract: An apparatus has a first motor for moving an actuator, a first brake for selectively braking the motor, a second brake that is engaged, the second brake dissipating torque spikes in the system, and a gear attaching the first motor to the actuator to cause the actuator to move and to the second brake whereby the torque spikes overcome stiction in the engaged brake so that the torque spike is dissipated in the engaged brake.

Abstract: An actuating assembly for an aircraft engine thrust reverser includes a drive shaft bearing a master pinion; a ball screw bearing a slave pinion engaging with the master pinion; a nut capable of translating over the ball screw as a result of the rotation of the ball screw; an extension tube rigidly secured to the nut and a lock assembly to block the rotation of the drive shaft in a so-called direct jet position of the reverser. The extension tube includes, at its free end, a member for connecting to a portion of the reverser prior to being actuated. In particular, the lock assembly includes an abutment secured to the drive shaft, and a cotter moveable between a locking position and an unlocking position. The reduction ratio (R) between the slave and master pinions is even.

Abstract: The invention relates to a telescopic actuator comprising a body (1) defining a cylindrical cavity of longitudinal axis (X); a rod (3) mounted to slide telescopically in the cylinder along the said axis; a nut (7) secured to the rod; a lead screw (4) mounted on the cylinder to extend along and rotate about the said axis (X) and collaborate with the nut in such a way that a rotation of the lead screw causes a telescopic movement of the rod in the cylinder; means (8, 9, 10) for driving the rotation of the lead screw. According to the invention, the nut is mounted on the rod to be axially retained thereon by retaining means (12, 13, 14; 30 to 38) which can be made to release the nut axially from the rod.

Abstract: A linear actuator (1) includes an electrical driving mechanism (10), a lead screw (20), an outer tube (30), a telescopic tube (40) and an arm driven mechanism (50). The arm driven mechanism (50) comprises an arm (51), a driving nut (52), a telescopic sleeve (53), a first washer (54), a nut-tube (55) and a second washer (56). The arm (51) is provided with a handle (511) and a sleeve (512), and the sleeve (512) links with the lead screw (20). An outer peripheral of the telescopic sleeve (53) provided with a plural of screws for screwing with the telescopic tube (40). The nut-tube (55) links with the driving nut (52) for moving together. When the handle (511) rotates, the linear actuator (1) can be operated.

Abstract: In a device for releasing a securing screw for a unit in a housing, in particular a pinion unit in a steering gear of a motor vehicle, the securing screw is connected via an external thread to an internal thread in the housing, wherein the securing screw is provided with a latching device, which has latching levers disposed distributed on the circumference of the securing screw, each of which said latching levers is provided with latching lugs disposed on the free ends of the latching levers. The latching lugs latch into toothing gaps of a toothing geometry of the housing. The latching device can be connected to a tool in order to release the latching levers having the latching lugs from the latched position by means of a radially inwardly directed movement of the latching levers.

Abstract: A high-load linear actuator includes a driving mechanism, a worm shaft, a worm wheel assembly, a lead screw, a telescopic pipe and an outer pipe. The driving mechanism includes a base and a motor. The base has a supporting portion and an accommodating portion. The motor is fixed to the supporting portion. The worm shaft extends from the motor into the supporting portion. The worm wheel assembly includes a worm wheel and two bearings for supporting the worm wheel in the accommodating portion. The worm wheel is drivingly engaged with the worm shaft. The lead screw is disposed through the worm wheel and driven by the motor for rotation. The telescopic pipe slips on the lead screw to be threadedly connected therewith. The outer pipe slips on the telescopic pipe. The rotation of the lead screw drives the telescopic pipe to linearly extend or retract relative to the outer pipe.

Abstract: A linear actuator is disclosed. The linear actuator includes a housing, a linear output member, and a rotary lock assembly. The linear output member includes a radial groove and is axially movable from a retracted position within the housing. The rotary lock assembly is constrained from axial motion within the housing and includes a rotor and a lock. The rotor is capable of rotation from a first to a second position. When the linear output member is in the retracted position, the rotor surrounds the radial groove. When the rotor rotates to the first position, the lock engages the radial groove and prevents axial motion of the output member from the retracted position.

Abstract: A grease composition includes: a poly-?-olefin having a kinematic viscosity at 40 degrees C. of 60 to 320 mm2/s, the poly-?-olefin being contained in an amount of 50 mass % or more relative to a whole composition; a thickener that is a lithium salt of a hydroxyl-free fatty acid having 10 to 22 carbon atoms; and an ashless dithiocarbamate and/or zinc dithiocarbamate that are contained in an amount of 0.1 to 1.5 mass % in terms of sulfur relative to a whole composition. In the grease composition, a phosphorous content is 0.05 mass % or less relative to the whole composition, and a worked penetration is in a range from 265 to 310.

Abstract: An actuator for a ram air turbine system includes a lock bolt having a multiple circumferentially arranged lateral supports. A piston rod supports multiple up-lock wedges. Multiple rollers are supported by the lateral supports with chamfers on the rollers engaging one another and are configured to radially support the up-lock wedges in a retracted position.

Abstract: A thrust reverser drive arrangement for driving a thrust reverser cowl for movement relative to first and second guide tracks is described which comprises a first actuator located, in use, close to the first guide track, a second actuator located, in use, close to the second guide track, and a third actuator, the actuators being arranged to be driven in synchronism and at the same speed by a drive motor to drive the cowl for movement, the third actuator being of smaller size and/or weight than the first and second actuators, and wherein the third actuator is provided with a load limiter to limit the transmission of loads through the third actuator in the event that the third actuator is subject to a compressive loading greater than a predetermined level. The invention further relates to a load limiter device suitable for use in such an arrangement.

Abstract: The invention concerns a safety device (1) for an actuator comprising a connection means (2) allowing a connection to a releasable holding means (5). The connection means (2) is fixed via a sacrificing means (3) to a supporting means (4), and a resilient means (7) is acting between the supporting means (4) and a supporting portion (8). An extension means (9) is fixed to the supporting means (4) via the connection means (2). The sacrificing means (3) has a mechanical strength such that the sacrificing means (3) breaks when subjected to a force exceeding a predetermined force, such that the extension means is no longer fixed to the supporting means and that a re-connection of the supporting means (4) and the releasable holding means (5) is made impossible. The predetermined force is lower than the mechanical strength of the extension means (9) and the supporting means (4). A linear actuator (13) comprising the safety device (1) is also provided.

Abstract: The invention relates to a drive device (20) for entrance/exit devices for public transit vehicles, comprising a drive unit (22) disposed in and driving a column (24) that rotates about an axis of rotation Z-Z during opening and closing operations, said column opening and closing an entrance/exit device. The drive unit (22) is supported in the vehicle by way of a support component (40) and the support component (40) acts as a counterbearing for a torque of the drive unit (22). A coupling device (72) is disposed between the drive unit (22) and the support component (40), said coupling device facilitating a rotation of the drive unit (22) about the axis of rotation Z-Z when a limit of the torque acting on the drive unit is exceeded.

Abstract: A driving device having a housing tube connected to a stationary base part or a movable structural component part a protective tube connected to the other respective part a spindle drive which has a threaded spindle and a spindle nut arranged on the threaded spindle by which the housing tube and protective tube are movable axially relative to one another, and a rotary drive that drives the spindle drive via a clutch, a rotationally rigid interconnection thereof can be canceled when a determined torque is exceeded. A magnetic ring having a plurality of north and south poles is rotationally arranged near a stationary sensor element. The magnetic ring is arranged at the clutch that is connected to the threaded spindle, fixed with respect to rotation relative to it.

Abstract: A ram air turbine system includes an actuator having a threaded portion, a rod having a threaded region at or near one end and an eyelet at an opposite end, and a bushing. The bushing has a first thread engaged with the threaded portion of the actuator, and a second thread engaged with the threaded region of the rod, such that an actuation force can be transmitted between the actuator and the rod through the bushing. The first and second threads of the bushing have different pitches.