Abstract: A height adjusting and leveling worksurface cantilever can comprise a leveling mechanism comprising a turnbuckle rod that can adjust an angle of a horizontal frame member relative to a vertical frame member. An assembler can adjust the angle of the horizontal frame member from a pivot point located on a proximal corner of the height adjusting and leveling worksurface cantilever. The height adjusting and leveling worksurface cantilever can also include a height adjusting mechanism comprising a threaded rod that can adjust a height of the height adjusting and leveling worksurface cantilever, relative to a hanger bracket.

Abstract: An adjustable refrigeration rack system may include a pair of parallel shafts arranged on a rear interior cabinet side of a refrigerator, a plurality of pairs of attachment mechanisms, each attachment mechanisms having one attachment mechanism arranged on one rail, and another arranged at equal height on the other rail, the attachment mechanisms configured to hold a shelf and selectively engage the respective shafts, and a drive mechanism configured to drive the shafts vertically, wherein movement of the shafts causes movement of the shelf arranged on the attachment mechanisms selectively engaged with the shafts, but not movement of a shelf arranged on the attachment mechanisms unattached to the shafts.

Abstract: Apparatus and associated methods relate to fence bracing apparatus having a tension adjusting module(s) to diagonally brace a fence post(s) and/or adaptive fence bracket(s) for flexibly bracing the fence post(s) for various fence configurations. In an illustrative example, a fence tensioning module may include a tension regulation module coupled to a tension adjusting link. For example, the fence tensioning module may adjust a position of the tension adjusting link relative to the fence tensioning module so that a tension of the tension adjusting link is adjusted. The adaptive fence bracket, for example, may include a butterfly clamp and an adaptive C-bracket having two sidearms configured to couple, for example, to fence rails and/or other tension members to form various fence bracing configurations. The butterfly clamp, for example, may include a ridge portion to engage a blade of the fence post. Various implementations may advantageously provide adaptive and secure fence construction.

Abstract: The invention relates to an operating device for a table, having a table panel with an adjustable height and/or inclination and having an internal collision detection device for detecting a collision between the table panel and an object or a person, comprising: a control unit and a hand-held switch that is connected to the control unit and has a display element, on which an element can be displayed for menu navigation, and one or more command buttons, by means of which the height and/or inclination of the table can be adjusted using the menu navigation, wherein at least one of the command buttons is assigned multiple times, and parameters of the table can be adjusted using the command buttons with multiple assignments, said parameters comprising a sensitivity level of the collision detection device.

Abstract: A frame for sit-stand-tables comprising a longitudinal member, two height-adjustable legs with at least two telescopic profiles, namely an outer and an inner profile, and with a driving mechanism, driven by a motor unit, comprising an electric motor and a gear. According to the invention the motor unit is arranged in the longitudinal member and connected to the driving mechanism in the height-adjustable legs. Thus, a frame with a simplified construction is achieved. The construction of the legs can be simplified and at the same time the dimensions can be reduced, as it is not necessary to take the building-in of a motor into the legs into consideration. As both legs are driven by a joint motor unit, the electric control can also be simplified as it will not have to drive the two legs synchronously.

Abstract: A workstation including a height-adjustable work surface is described. The workstation includes a frame, and the work surface is configured to translate relative to the frame to vary a height of the work surface. A lift assembly configured to assist translation of the work surface relative to the frame. The lift assembly includes a moveable component and translation of the moveable component results in a translation of the work surface relative to the frame. A translation sensor is coupled to one of the frame or the movable component, and it is configured to measure translation of the moveable component relative to the frame. A control circuit is in communication with the translation sensor to determine an amount of translation of the work surface relative to the frame.

Abstract: In a method for managing human waste collection for a bed-ridden user, a pelvic support member with an aperture and another opening is suspended over a mattress. A bag fitting the aperture is removably attached to the pelvic support member below the aperture. The pelvic support member is adjusted to change a geometric parameter of the aperture and/or the opening. The pelvic support member includes longitudinally extending flexible elongate elements each slidably attached to transverse edge elements of the pelvic support member and further includes transversely extending flexible elongate elements each slidably attached to longitudinal edge elements of the pelvic support member. The adjusting of the pelvic support member includes sliding at least one of the flexible elongate elements along respective ones of the transverse edge elements and the longitudinal edge elements.

Abstract: A lifting table stand includes a pair of telescopic columns, a carrier, an actuation module, and a passive mechanism. Each telescopic column includes multiple tubes adapted to sheathe with each other and move telescopically relative to each other. The carrier includes a beam straddling the telescopic columns and a pair of support members perpendicularly connected to two ends of the beam. The actuation module includes a receiving member detachably installed to the beam and a driver connected to the receiving member. The passive mechanism includes a transmission shaft and a pair of gear sets installed in the tubes. The transmission shaft passes the driver and is connected to each gear set. Since the receiving member is detachably installed to beam, the actuation module may be changed to different types to control the elevation of the lifting table stand.

Abstract: The present invention relates to an adjustment profile (11) comprising an elongated means, substantially square of its cross section which means is provided with evenly spaced fastening openings (13) on at least one of its surfaces for receiving fastening means. In the cross section of this adjustment profile, one of its four sides is open for the whole length dimension of the adjustment profile comprising two opposite edge profiles (12) shaped substantially symmetrical to form a linear guide. Between the two opposite edge profiles (12) forming this linear guide is here arranged a moving carriage (16), whereby the motion of the carriage is supported by at least two bearing units (18) supported on opposite edge profiles.

Abstract: A convertible table is disclosed. The convertible table may comprise a tabletop, a plurality of supporting legs, a plurality of leg mounting tracks, and a table converting mechanism.

Abstract: A lifting apparatus (100) is disclosed. The lifting apparatus (100) includes a power driving module (1) for providing a driving force, a plurality of lifting modules (21, 22, 23) for raising and lowering a supporting module (4) upon action of the driving force, and a transmission module (3) located under the supporting module (4) for transmitting the driving force to at least one of the plurality of lifting modules (21, 22, 23). An ultrasonic inspection system is also disclosed, which includes at least one ultrasonic probe and the lifting apparatus (100) for raising and lowering a workpiece (200) at least partly immersed in a liquid to a suitable position for inspection of the workpiece (200) by the at least one ultrasonic probe.

Abstract: A user module for a patient support is provided. The user module is coupled to a patient support barrier, such as a siderail or a footboard.

Abstract: A lifting table stand includes a pair of telescopic columns, a carrier, an actuation module and a passive mechanism. Each telescopic column includes multiple tubes adapted to sheathe with each other and move telescopically relative to each other. The carrier includes a beam straddling the telescopic columns and a pair of support members perpendicularly connected to two ends of the beam. The actuation module includes a receiving member detachably installed to the beam and a driver connected to the receiving member. The passive mechanism includes a transmission shaft and a pair of gear sets installed in the tubes. The transmission shaft passes the driver and is connected to each gear set. Since the receiving member is detachably installed to beam, the actuation module may be changed to different types to control the elevation of the lifting table stand.

Abstract: A mobile workstation can include a head unit assembly. A worksurface can be coupled to the head unit assembly and configured to translate with respect to the head unit assembly between an open configuration and a closed configuration. A glide can be rotatably coupled to the head unit assembly and engaged with the worksurface. The glide can include a latch configured to translate with respect to a glide body of the glide. The mobile workstation can include a worksurface opening mechanism having a locking configuration and an unlocking configuration. The worksurface opening mechanism can include a latch release handle moveably coupled to the head unit assembly. Movement of the latch release handle can transition the worksurface opening mechanism between the locked configuration and the unlocked configuration. A release assembly can selectively engage with the first latch. A lift system can bias the worksurface away from the head unit assembly.

Abstract: A lift force of a height adjustable assembly can be estimated using a potentiometer or other position sensor coupled to a counterbalance mechanism. The estimated lift force can be communicated to the user, e.g., presented on an electronic display, and the user can continue adjustment of the lift force, if needed, to substantially balance the lift force with the weight of the components coupled to the assembly.

Abstract: A variable height workstation system includes a base, a variable height platform, a lift mechanism, and a sensor arrangement. The lift mechanism is configured to move the variable height platform within a range of motion between a fully lowered position and a raised position. The sensor arrangement is operatively connected to the variable height platform. The sensor arrangement is configured to sense the position and movement of a user on, above and around the variable height platform for outputting data to determine how the user is positioned on, above and around the variable height platform in comparison to a predetermined target position.

Abstract: A shelf system may have a shelf member, and a biasing bracket attached to the shelf member having a rear portion and a forward portion. The system may also have a biasing member having a first end connected to the rear portion of the biasing bracket and a second end connected to the shelf member. The forward portion of the biasing bracket may have a lower stop adapted to prevent the shelf member from extending below a horizontal orientation. And, a pivot bracket may be located behind the lower stop through which a pivot extends and into the biasing bracket to permit selective movement of the shelf member.

Abstract: Concepts and technologies are disclosed herein for a galley lift. In one embodiment, the galley lift includes an upper portion and a lower portion. The upper portion can have a lift platform and a lift platform ram extension. The lower portion can have a lift mechanism and a ram. In some embodiments, the lift platform ram extension is attached to the ram.

Abstract: A system for replenishing a self-service pick-up cabinet, a self-service pick-up cabinet system, an apparatus, and a method are provided. The system for replenishing self-service pick-up cabinet controls, by means of a control system, an goods transport device to acquire replenishing goods at an inlet of a self-service pick-up cabinet, and transports the replenishing goods to a goods locker, which is designated by the control system, of the self-service pick-up cabinet. The self-service pick-up cabinet system comprises the system for replenishing a self-service pick-up cabinet, the self-service pick-up cabinet and an unmanned delivery vehicle. The unmanned delivery vehicle transports and unload the replenishing goods to the inlet of the self-service pick-up cabinet. The replenishing efficiency of the self-service pick-up cabinet is improved and the labor cost is reduced.

Abstract: A configurable interior fixture for a vehicle includes a base assembly, a table assembly and an ottoman cushion. The base assembly is positionable between a lowered position and a raised position. The table assembly includes a center leaf section supported on the base assembly and a side leaf section that is moveable between a stowed position and a use position. The ottoman cushion includes a base frame with a cavity for receiving the table assembly and a cushion assembly attached to the base frame. The interior fixture may be configured as a foot rest by lowering the base assembly, folding the table assembly and attaching the ottoman cushion to the table assembly. The interior fixture may be configured as a table by raising the base assembly, detaching the ottoman cushion from the table assembly and the unfolding the table assembly into the use position.

Abstract: A method of charging a battery system of an electrically powered aircraft that is at a location on the ground. The method moves an Aircraft Charging Unit (ACU) to a position proximate to the location, the ACU having a set of storage batteries, a charge controller, and a connection system. The method further couples the set of storage batteries to the battery system through the connection system of the ACU and causes transfer of energy from the set of storage batteries to the battery system under control of the charge controller. The method then decouples the set of storage batteries from the battery system of the aircraft.

Abstract: A display stand has two spaced apart legs connected by a horizontal support bar that is attachable to multiple displays. Carriage assemblies allow the stand to adjust the vertical position of the displays, shuttles and rails allow the stand to adjust the horizontal positions of the displays, and a central joint on the support bar allows the stand to adjust the angle between the displays. The carriage assemblies can convert rotational movement of adjustment handles into vertical movement of the support bar that is synchronized at both legs whether the support bar is in a straight or angled configuration. Wheels on the shuttles can provide smooth, consistent contact with rails in the support bar despite changes in the nominal dimensions of the rails. The display stand provides improved smoothness, rigidity, and comfort for the user to support and use multiple displays on a single stand.

Abstract: A frame for sit-stand-tables comprising a longitudinal member (3), two height-adjustable legs (6, 7) with at least two telescopic profiles, namely an outer and an inner profile, and with a driving mechanism, driven by a motor unit (39), comprising an electric motor (46) and a gear. According to the invention the motor unit (39) is arranged in the longitudinal member (3) and connected to the driving mechanism in the height-adjustable legs (6, 7). Thus, a frame with a simplified construction is achieved. The construction of the legs (6, 7) can be simplified and at the same time the dimensions can be reduced, as it is not necessary to take the building-in of a motor into the legs into consideration. As both legs (6, 7) are driven by a joint motor unit (39), the electric control can also be simplified as it will not have to drive the two legs synchronously.

Abstract: The invention relates to a pick-up device with a height-adjustable pick-up unit and at least one gas pressure spring designed to compensate for forces acting on the holding unit.

Abstract: A refrigerator includes a cabinet defining a storage chamber, a drawer door, a rail that slidably couples the drawer door to the cabinet, a driving device provided in the door part, an elevation device provided in the drawer part to vertically ascend or descend at least a portion of the drawer part, and an elevation detection device. The drawer door includes a drawer part configured to be inserted into and withdrawn out of the storage chamber and a door part coupled to the drawer part and configured to open and close the storage chamber. The driving device includes a motor assembly, a screw assembly having a screw and a screw holder, and a lever that couples the screw holder to the elevation device and is configured to be rotated based on the movement of the screw holder along the screw.

Abstract: An automatic door opening system suitable for use in an electrical device having a body with an inner chamber, a door hinged to the body from one side, and a processing unit, the automatic door opening system having a rod that allows the door to open by applying a pushing force to the door while moving in a forward direction, and allows the door to be released when the rod brings into the backward position by moving in the backward direction.

Abstract: An ambulance cot loading and unloading system for an emergency vehicle includes a base for mounting in the emergency vehicle and an arm mounted for linear movement along the base, wherein the arm configured to support a cot while the cot is being loaded into or unloaded from the emergency vehicle. The ambulance cot loading and unloading system further includes an indicator mounted relative to the arm and a control system, which is in communication with the indicator and configured to generate a status indication of the cot loading and unloading system at the indicator.

Abstract: A lifting device includes a guide unit, a support unit and a lifting unit. The guide unit is extendable and retractable along a direction. The support unit is disposed in the guide unit and includes a securing connector fixed to a seat body and made of elastic material, a support tube connected to the securing connector, and a support member disposed on the support tube. The lifting unit includes a first rod-actuating screw member disposed on the support member and having a first threaded hole, and a threaded rod unit including a first threaded rod extending into the support tube and being threadedly engaged with the first threaded hole, such that the first threaded rod is rotatable by an external force and movable in the direction.

Abstract: An electric lifting platform retractable upon hitting an obstruction includes a lifting column, a platform, a controller, and a manipulator. The controller comprises a main control unit and a motor driving circuit. An output end of the main control unit is connected to the motor driving circuit. The electric lifting platform further includes a multi-axis sensor module for acquiring obstruction-hitting data of the platform. As the multi-axis sensor module is connected to an input end of the main control unit, the main control unit transmits a control signal to the motor driving circuit after processing the obstruction-hitting data, and the motor driving circuit controls the lifting column to execute a corresponding retracting movement.

Abstract: A position adjustment mechanism for a lifting balance device contains: a first cover and an adjustment device. The first cover includes at least one lifting balance device, and each of the at least one lifting balance device includes a first support, a second support intersected with the first support, and a first shaft configured to connected the first and second supports. The first support includes a first roller arranged on a first end thereof adjacent to the first cover and accommodated in a first track groove on the first cover. The first track groove has the adjustment device arranged therein opposite to the first roller, such that the adjustment device is adjustable to limit a highest lifting position of each of the first support and the second support.

Abstract: Various aspects of the present disclosure are directed toward apparatuses, systems, and methods for controlling movement of a desk or table. The apparatuses, systems, and methods may include a housing arranged with the desk or table and a lever configured to initiate raising or lowering of the desk in response to a force applied by a user.

Abstract: A functional wall module for at least partially forming an individual space in a building and for positioning and selectively repositioning one or more objects within the individual space. In one implementation, the functional wall module includes a frame having a plurality of frame supports that define an interior space of the frame. The functional wall module additionally includes a bracket configured to support or couple to moveable platforms, the bracket comprising one or more bracket arms extending away from the interior space and from the frame. The functional wall module additionally includes a positioning mechanism within the interior space and connected to the bracket such that the positioning mechanism is operable to reposition the bracket.

Abstract: An adjustable lifting column for adjusting a piece of furniture comprises a drive assembly, a threaded spindle assembly comprising at least two concentrically arranged threaded spindles, of which an outer threaded spindle concentrically surrounds at least one further threaded spindle, a telescopic tube assembly comprising three concentrically arranged telescopic tubes, and a driver mechanism having an internal thread. The threaded spindle assembly is located within the telescopic tube assembly. Two adjacent threaded spindles of the threaded assembly have a common threaded connection. One of the at least two threaded spindles in the threaded spindle assembly is connected to the drive assembly for driving this one threaded spindle. The outer threaded spindle also has an external thread in which the internal thread of the driver mechanism engages. The driver mechanism is connected to a middle telescopic tube of the three telescopic tubes.

Abstract: Electrical operating unit comprising a first and a second part, where the two parts can be mutually adjusted. The Operating unit (1) comprises a first part constructed as a housing (2), which contains the electric equipment with at least one electric switch and a second part constructed as a mounting unit (3) for the first part. The two parts are interconnected about a shaft (17), so they can rotate mutually. When the operating unit is mounted the housing (2) will assume a first position, an initial position. By pressing the housing (2) it rotates about the shaft (17) and is brought into a second position, an activation position, where the switch(es) is/are activated in that they are pressed against the second part (3). With this embodiment of the operating unit the piece of furniture can be adjusted in either direction by pressing the housing (2). The housing (2), besides from functioning as a switch, can also be equipped with other switches and displays.

Abstract: A drive mechanism for adjusting a position of a vehicle closure, with respect to a vehicle body, is provided. The drive mechanism may include a linear drive and a telescoping arrangement. The linear drive may include a spindle and a spindle nut and the telescoping arrangement may be coupled to the spindle nut and include a pair of gears coupled to one another. As the spindle rotates, the pair of gears may rotate to extend and retract translating portions of the telescoping arrangement in a telescoping manner such that the position of the vehicle closure may be adjusted.

Abstract: A height adjustable desk includes a work surface, a first telescoping leg, a second telescoping leg, a driving device, and a switch device. The first telescoping leg and the second telescoping leg are connected to the work surface, and are driven by the driving device to lift or low the work surface to any desired height. The switch device is mounted on the first telescoping leg to be activated when the work surface is moved to a predetermined position. The switch device will turn the motor off to stop the work surface when the switch device is activated.

Abstract: A synchronizing lifter and a lifting table are disclosed that can ensure components supported on the synchronizing lifter cannot be in an inclined state. This has advantages in that by releasing the locking of one of power output portions of a linear driver, a first flexible traction component, a second flexible traction component, a first bracket and a second bracket through a locking mechanism, the driver works and a flexible connection component connected to the output end of the driver can move. The power is transferred to a corresponding bracket that drives a power transfer component to move up or down. The power transfer component drives the other bracket to move up or down, and another bracket drives the other flexible traction component to move. One driver drives the two ends of a synchronizing mechanism to move up and down, so that the structure is simple and costs are kept low.

Abstract: The present invention relates to a system iron. The system iron of the present invention includes a body including therein a steam generator for generating steam; an ironing plate disposed on the body so as to spray the steam generated by the steam generator to an outside; a height adjustment box, which is retracted into the body and extended outwards from the body so as to adjust a height of the ironing plate; a lock including a first bar, which projects outwards from the height adjustment box so as to limit the movement of the height adjustment box; a lock holder, which is connected to two side surfaces of an end of the lock so as to change the position of the first bar, thereby allowing the height adjustment box to be moved; and a height adjustment lever for moving the lock holder via a wire.

Abstract: A table arrangement includes a height adjustment mechanisms for movement of one or more height adjustable tabletops. When more than one tabletop is present, each of the tabletops can be independently moveable. Embodiments of the table arrangement can be configured so that a user can manipulate an actuation mechanism to have the tabletop automatically moved to a pre-selected position without the user having to manually control the actuation mechanism to cause the tabletop to move to that pre-selected position.

Abstract: A display device includes a display panel including first and second expansion portions, and a center portion between the first and second expansion portions; a first outer frame connected to the first expansion portion; a second outer frame connected to the second expansion portion; an intermediate frame disposed between the first and second outer frames, and overlapping the center portion of the display panel; a first guide shaft on the intermediate frame; a first motor connected to the first guide shaft; a first slide connected to the first guide shaft and configured to move along the first guide shaft; a first connection portion rotatably connected to one side of the first slide and one end portion of the first outer frame; and a second connection portion rotatably connected to another side of the first slide and one end portion of the second outer frame.

Abstract: An add-on device for a slicing machine for inserting a separation sheet in between food slices comprises a container containing (a) a sheet tray, (b) a pack of separation sheets positioned on the sheet tray, the pack of separation sheets comprises at least two types of separation sheets, each having a cut-out portion at a different location to allow contacting a second in-line sheet through a top sheet, the separation sheets are organized in said container in an alternating manner, (c) a mechanic/electro-mechanic mechanism for pushing the sheet tray upwards, (d) a three-position lever, the three-position lever comprises a left wing, a right wing and a lever actuator, the lever actuator rotates clockwise and counterclockwise across its longitudinal axis in an alternating manner, and (e) an electronic system to monitor, control, and operate the operation of the add-on device.

Abstract: A height adjustable table is disclosed, comprising at least one electrically height adjustable table column and a control device, wherein the height adjustable table comprises an operating element with at least one fingerprint sensor. Furthermore, a method is disclosed by which the height adjustable table can be controlled using the fingerprint of a user.

Abstract: A variable height workstation system includes a base, a variable height platform, a lift mechanism, and a sensor arrangement. The lift mechanism is configured to move the variable height platform within a range of motion between a fully lowered position and a raised position. The sensor arrangement is operatively connected to the variable height platform. The sensor arrangement is configured to sense the position and movement of a user on, above and around the variable height platform for outputting data to determine how the user is positioned on, above and around the variable height platform in comparison to a predetermined target position.

Abstract: The present disclosure relates to the field of office furniture, and more particularly to an electric lift table control system and method that realize a resistance back-off. The system comprises a controller, a table (1) and a lifting column (2) for driving the table to move vertically, the lifting column (2) is connected with the controller signal, and further comprises at least one arranged under the table (1) a safety grating (3) for detecting obstacles, each set of safety gratings comprising a transmitting end assembly and a receiving end assembly, and a gap is provided between the safety grating (3) and the lower surface of the table (1), and said The safety light barrier (3) is connected to the controller signal. This will control the lifting column to stop working before encountering obstacles.

Abstract: An apparatus, system, and method for calibrating an electromagnetic sensor of a vehicle. Calibration is performed by positioning a calibration apparatus at known positions relative to the electromagnetic sensor of the vehicle, and taking measurements with respect to each known position. The calibration apparatus disclosed herein further comprises adjustable components.

Abstract: A table assembly includes tiltable board, an inclination-monitoring module and an attaching apparatus. The inclination-monitor device includes an electronic module and a power supply. The electronic module includes a sensor for detecting the inclination of the tiltable board and a display for showing the inclination. The power supply includes a battery, a holder and a cover. The battery is located in the holder and electrically connected to the electronic module. The cover is engaged with the holder to keep the battery in the holder. The attaching apparatus includes a shell, an upper frame and a lower frame. The shell is located in a bore made in the tiltable board, and receives the inclination-monitoring device. The upper frame extends on the shell, contacts an upper face of the tiltable table, and includes a window to expose the display. The lower frame covers the holder.

Abstract: A damping device for structure includes a base frame installed on a target place, an air floating mass disposed on the base frame to blow off air, a TMD mass disposed above the base frame to float with an air pressure, one pair of guiderail units disposed on X-direction both sides of the base frame along the X direction respectively, slider units disposed to be slidable in the X direction relative to the guiderail units, coupled to each X-direction side face of the TMD mass and each including a slider moving up/down mechanism part which moves down a slider when the TMD mass floats, an oil damper attached to the base frame to exert an attenuation action on the TMD mass and a coil spring attached to the base frame to exert a restoration action on the TMD mass.

Abstract: An electric lifting frame includes a lifting pedestal and a remote control. The lifting pedestal includes a supporting base, a lifting rod detachably connected to the supporting base, and a transmission mechanism, a motor, a controller, and a power supply provided at the lifting rod. The motor is configured to effect extension and retraction of the lifting rod via the transmission mechanism. The controller is configured to control starting and stopping and a rotation direction of the motor. The power supply is configured to supply electric energy to the motor and the controller. The controller is further configured to determine a remaining capacity of the power supply and calculate a number of remaining available times of use according to the remaining capacity, a power of the motor, and a stroke of the transmission mechanism.

Abstract: A height-adjustable table with a stop control system includes a tabletop, a table leg, a power supply, a lifting module, a sensing module, a sound module, a main control unit, and a manual controller. Through the design of the sensing module and the main control unit, when a person or an object is approaching during the descent of the tabletop, the sensing module feeds back the received signal to the main control unit and controls the lifting module to stop running. The structural design is clever and reasonable, easy to use, practical, and can be widely used.

Abstract: The invention relates to an actuating device for an approximately horizontal mobile platform that is able to be set in movement in a vertical direction between a high position and a low position, and having a frame supporting the platform, said actuating device having at least one rigid chain actuated by at least one motor secured to the frame, and a guide member for guiding the rigid chain between a position substantially extended in the direction of the ground and a position substantially stowed parallel to the frame.