Abstract: A safety device used in conjunction with a vehicle wheelchair lift, having a mounting plate for securing to the floor of a vehicle, upright members disposed on opposite longitudinal ends of the mounting plate, a barrier plate in overlying relationship to the mounting plate and pivotally connected to the uprights for movement between a raised and lowered position, the barrier plate, when raised, acting as a physical barrier to prevent a wheelchair from rolling across the mounting plate, and an actuator operatively connected to the barrier plate. In one embodiment, the upright members are a housing and a support wall. In another embodiment, the uprights are elongated members and include a cross bar disposed horizontally and in spaced parallel relation to the mounting plate when the barrier plate is raised and is disposed vertically and transverse to the mounting plate when the barrier plate is in the lowered position.

Abstract: The disclosed embodiments relate to a photovoltaic mobile lab configured for performing on-site test in a photovoltaic module. The photovoltaic mobile lab includes a transport vehicle, a first container, a second container, and a light source. The first container is fixed on the transport vehicle. The second container is slidably sleeved on the first container. The second container and the first container together form a testing chamber. The light source is configured for providing illumination to the photovoltaic module. The light source and the photovoltaic module are respectively accommodated in the first container and the second container and are respectively located at two opposite ends of the testing chamber so that a distance between the light source and the photovoltaic module is changeable while the second container is sliding with respect to the first container.

Abstract: Portable lifting and transferring techniques for assisting in the mobility of disabled persons are disclosed. In one particular embodiment, the techniques may be realized as a portable lifting and transferring apparatus for assisting disabled persons that is compact, lightweight, and portable for use in different locations. Preferably, such an apparatus would provide multiple pivot points for providing multiple degrees of maneuvering freedom when lifting and transferring disabled persons and/or their mobility devices and for providing compatibility with a wide range of vehicles. The techniques may also be realized in other embodiments as disclosed herein.

Abstract: A hydraulic steering device hydraulically connects a steering cylinder to a supply system, wherein the supply system can be operatively connected hydraulically to the steering cylinder via a steering valve in order to configure a main flow connection, and the supply system can be operatively connected hydraulically to the steering cylinder via a flow control valve arrangement in order to configure an auxiliary flow connection which bypasses the main flow direction.

Abstract: A dual hinged, diamond-steel plate structured and arranged to swing to cover the gap between a truck or trailer's floor and its lift-gate thereby eliminating the gap in between the trailer floor and lift gate to make loading and unloading the truck trailer a much easier and smoother operation.

Abstract: A portable and foldable lift can be attached to a surface such as a tailgate of a truck. The lift can be slid off the gate and used to lift heavy objects from the ground to the bed of the truck. The portable and foldable lift is returned in a folded position to the tailgate for easy storage. The portable and foldable lift can also be attached to a work bench, either on top or underneath, and can be folded up and stored out of the way.

Abstract: A portable lift assembly that is temporarily mountable to the ends of standardized shipping containers, that allows cargo to be loaded and unloaded without a raised loading dock. The assembly includes a frame having pin members that engage standard corner castings on the access end of a shipping container so that the weight of the lift assembly and cargo are borne by the end of the container. Cargo is raised and lowered on a platform, with power being supplied from onboard the portable assembly. The portable assembly may be transported between containers and installed using a forklift or similar machine.

Abstract: A winch system includes a truck that has a bed and the bed has a pair of spaced lateral walls. A winching unit is coupled to the truck. The winching unit includes a bar that has a telescopically adjustable length and the bar extends between the spaced lateral walls. The winching unit may be coupled to an object. Thus, the winching unit may urge the object into the bed thereby facilitating the truck to transport the object.

Abstract: A vehicle lift for a load, such as a wheelchair. The whole lift is movable between a retracted position and an extended position that comprises a support pillar, a platform, and a lifting device. The platform is connected pivotably to the support pillar and has a horizontal pivot axis such that the platform is pivotable about the horizontal axis. The lifting device is hingedly connected to the support pillar and is configured for lifting and lowering the support pillar with the platform between the retracted position and the extended position. The support pillar is one piece and has a curved configuration along the longitudinal axis.

Abstract: The present invention provides a locking assembly for a ramp of a lift gate. The locking assembly comprises an elongated locking arm and a spring for spring loading the locking arm. The locking arm is pivotably disposed on a pivot point relative to the ramp. A biasing tension in the spring urges a proximal end of the locking arm to engage with a cam portion of the ramp to maintain the ramp in a selected position. The cam portion has multiple engagement surfaces for individually engaging with the locking arm, wherein selectively engaging the locking arm with each engagement surface of the cam portion maintains the ramp in a corresponding selected position.

Abstract: An apparatus for loading a wheelchair into a vehicle and automatically storing the wheelchair within an enclosure that protects the wheelchair and the mechanisms of the apparatus from exposure to weather during transportation is disclosed. The Wheelchair Transportation Loading and Storage Apparatus would primarily be used to automatically load into and store a wheelchair within an enclosure, which protects the wheelchair and the apparatus' mechanisms from exposure to weather during transportation, which is mounted in a portion of a pick-up truck bed as to allow for substantial use of the pickup bed for other purposes such as the transportation and storage of tools and materials, and which appears as an ordinary pick-up-truck-bed tool box when it is in the stowed position. The Wheelchair Transportation Loading and Storage Apparatus comprises a wheelchair hoist, a weather-resistant enclosure and a control module which may be operated remotely.

Abstract: A truck having a truck body with lift track and a battery electrically connected to the body and a platform for moving along the lift track. A box holding a hydraulic unit with solenoid valves for moving the platform is attached to the truck body. A movable wireless switch having an internal power source is on the platform. When a user operates a switch the movable wireless switch emits a movement signal from a movable antenna electrically connected to the truck body. A fixed wireless switch is on the truck body. When a user operates a switch the fixed wireless switch emits a movement signal from an antenna electrically connected to the body. A wireless receiver receives the movement signal and then applies control signals to the hydraulic unit. The wireless receiver also receives a sensor signal and emits an alert if the hydraulic unit has a problem.

Abstract: A wheelchair lift mounted on the rear of an automobile for transporting a wheelchair, scooter or other mobility device includes two or more sets of sensors. A first set of sensors is located at the distal ends of the wheelchair lift platform for use when the platform is horizontal. A 2nd set of sensors is located on the base of the wheelchair lift for use when the platform is folded vertically. The sensors alert a driver to the presence of objects in close proximity to the rear of the vehicle when driven in reverse. They switch automatically activates the base sensors when the platform is folded and the platform sensors when the platform is horizontal.

Abstract: A transport hitch apparatus which is attached to a standard semi-truck tractor via the truck's frame and fifth-wheel, and which is capable of lifting and towing agricultural implements using an array of different hitch connections. The transport hitch is customizable, and is capable of conforming to several semi-truck tractor frame types and implement hitch types. In the practice of an aspect of the present invention, an agricultural implement is attached to the transport apparatus via a two-point or drawbar hitch. The transport apparatus includes a self-contained electrically powered hydraulic lift system capable of lifting large agricultural implements for transport. The transport apparatus is mounted to a tandem axle semi-truck tractor fifth wheel and frame. The transport apparatus is designed to quickly attached to any standard semi-truck tractor. The hydraulic lift system allows implements of any shape or size to be raised or lowered to an ideal towing height.

Abstract: A mounting system for mounting a lift gate on a structure is provided, the lift gate having a lift platform supported between a pair of spaced support columns. The mounting system comprises a first mounting member configured for attachment onto said structure, wherein the first mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. The mounting system further comprises a second mounting member configured for attachment onto said structure, wherein the second mounting member includes a support protrusion for engaging an opening in a wall of a corresponding lift gate support column. When the mounting members are attached to the structure and the corresponding lift gate support columns are mounted on the support protrusions, the mounting members support the lift gate on the structure.

Abstract: A lifting assembly for use on vehicles of a variety of types, including recreational vehicles, vans, trucks and the like, and includes one or more lifting structures that will support a deck structure. The lifting assembly will be removably mounted to the vehicle frame so that the whole assembly can be removed from the vehicle, and the deck structure is pivotally mounted to the lift assembly so that it can be moved between a stored position when not in use, or a transport position when loads are to be carried. When in the transport position the deck will be movable between lowered and raised positions so that items can be placed on the deck in the lowered position and then transported once the deck is raised to a desired height.

Abstract: A battery container for battery temperature control comprises a housing including an enclosure for receiving a battery, wherein at least a portion of the housing comprises a thermal insulation material for insulating the interior of the enclosure against ambient temperature. The battery container further comprises a temperature control element disposed within the enclosure, wherein the temperature control element reduces the rate of heat transfer between the ambient and the interior of the enclosure. The temperature control element comprises an active temperature control element. The battery container further comprises a controller that in response to a signal indicating battery temperature, controls the active temperature control element for reducing the rate of heat transfer between the ambient and the interior of the enclosure.

Abstract: A hoist assembly having a winch with a motor, a boom that rotates upward and downward, and a boom support cable which prevents the boom from rotating downwards below a desired level. The boom support cable is connected to an adjustment bar which adjusts the length of the boom support cable to fix the boom position at a desired angle. Alternatively, a boom hook can be used to fix the boom position at a desired angle. The winch and boom are attached at a front end of a cargo receiving area of a vehicle and are constructed to retrieve a load to the vehicle, lift the load, and place the load into the cargo receiving area. The winch is constructed to lift both the load and the boom simultaneously.

Abstract: A portable and foldable lift can be attached to a surface such as a tailgate of a truck. The lift can be slid off the gate and used to lift heavy objects from the ground to the bed of the truck. The portable and foldable lift is returned in a folded position to the tailgate for easy storage. The portable and foldable lift can also be attached to a work bench, either on top or underneath, and can be folded up and stored out of the way.

Abstract: The present document describes a trailer for lifting a heavy load, the trailer comprising a base frame defining an opening for receiving the load upon displacement of the trailer toward the load; and a structural frame upwardly extending from the base frame, the structural frame including a lifting frame above the heavy load for removable attachment to the heavy load; and a lifting device for lifting the heavy load removably attached to the lifting frame and thereby to permit displacement of the heavy load with the trailer.

Abstract: An apparatus and method for lifting and transporting exercise equipment features use of a winch movably supported on a header spanning between a pair of wheeled side frames for adjustment of the winch position in two dimensions to account for varying center of gravity locations on different pieces of equipment to be lifted. The apparatus is rolled into a position straddling the equipment for lifting of same, at which time supports are laid across the space between the side frames for lowering of the equipment onto the supports for stable seated transport of the equipment on the supports by rolling of the wheeled apparatus. A single service technician can easily and safely remove a piece of equipment from the exercise floor to avoid disruption or hazard to gym members.

Abstract: This invention concerns an aircraft cargo loader comprising a deck platform; a front and a rear wheel assembly units; and a scissor assembly extending under the platform for supporting it and move it between an open and close position. The scissor comprises a first and a second elongated arm pivotally connected by a swivel joint. Each of the first and second elongated members have an upper end pivotally attached to the deck platform and a lower end pivotally connected to the rear and front wheel assembly unit respectively. One of the first and second elongated members is articulated and comprising an upper segment pivotally connected to a lower segment. The loader comprises a first controllable actuator to move the scissor assembly between the open and close positions and a second controllable actuator to actuate the upper segment relative to the lower segment so as to tilt the deck platform longitudinally.

Abstract: Portable vehicular hoist systems include a truss assembly having a joist member with forward and rearward ends, a pair of rafter members each having upper and lower ends, and a forward connection assembly for connecting the upper ends of the rafter members to the forward end of the joist member to allow for relative pivotal articulated movements therebetween. The rafter members may thus be pivotally moved between a stowed condition wherein the rafter members are oriented generally parallel to the joist member and an operative position wherein the rafter members extend downwardly and laterally outwardly from the joist member. A hoist assembly may be provided so as to be connectable to the joist member of the truss assembly to be supported thereby. The rearward end of the joist member and the lower ends of the rafter members may be removably attached to respective connection lugs rigidly fixed to a vehicle's structure, e.g., an aircraft fuselage at an opening therein.

Abstract: The present invention provides a locking assembly for a ramp of a lift gate. The locking assembly comprises an elongated locking arm and a spring for spring loading the locking arm. The locking arm is pivotably disposed on a pivot point relative to the ramp. A biasing tension in the spring urges a proximal end of the locking arm to engage with a cam portion of the ramp to maintain the ramp in a selected position. The cam portion has multiple engagement surfaces for individually engaging with the locking arm, wherein selectively engaging the locking arm with each engagement surface of the cam portion maintains the ramp in a corresponding selected position.

Abstract: A lift gate assembly for a vehicle that includes a platform assembly with a platform member. The assembly also includes a linkage assembly pivotally connected to the platform member and operably coupled to a vehicle, such that the platform member is pivotally moveable between a storage position and an in-use position. The assembly further includes a pedal opener coupled to the platform member at a location above the first pivot point when the platform member is in the storage position. The pedal opener also has a rearwardly disposed, upwardly facing surface configured to receive a generally downward applied force that assists pivotal movement of the platform member from the storage position to the in-use position.

Abstract: The present application provides an all terrain vehicle for load hauling. The all terrain vehicle may include a cargo box and a winch assembly positioned about the cargo box.

Abstract: A cargo lift system for loading cargo at or near ground level and raising it over a vehicle is described. The cargo lift system may be attached to a variety of vehicles, including but not limited to horse trailers, recreational vehicles, cars and trucks and other vehicles. The cargo lift system can be used to securely transport a wide variety of cargo over a vehicle and safely loading and unloading the cargo from the vehicle.

Abstract: A lifting system includes a vertically extending parallel pair of fixedly spaced apart guide surfaces, a linear actuator suspended vertically between said pair of guide surfaces, a vertically elongate runner member having a pivotal connection to a lower end of said linear actuator to be vertically reciprocated by said actuator, a load bearing member at a lower end of said runner member at a location spaced downwardly from said pivotal connection and a vertically spaced apart pair of sliding contact members on said runner member for relatively slidable contact with said pair of guide surfaces during vertical reciprocation of said runner member by said actuator. Each of said contact members comprises a projecting contact pad having a concave surface for slidable contact with one of said guide surfaces.

Abstract: A bin tunnel having collapsible sides is used with a truck box of a truck to load content into the truck box from a bin that is sized to fit within the bin tunnel when the bin tunnel is in an open position. When the bin tunnel is in a closed position a footprint of the bin tunnel is very small compared to the open position because the sides are retracted. The footprints can be less when the bin tunnel is in the closed position from thirty (30) percent of the footprint of the bin tunnel in the open position. When the bin tunnel is closed, the contents of the truck box are secure as the space inside of the closed bin tunnel is too small to allow access to the interior.

Abstract: Improvements in a vertical recreational vehicle ramp and lift that allows a recreational vehicle to be stored and transported in a vertical orientation. A cable from the lift mechanism connects to a recreational vehicle. The cable in then retracted to lift the recreational vehicle into a vertical orientation. This method of storage reduces the amount of space that is required to store a recreational vehicle. The storage method can be used in a garage, on the back or within a mobile transportation vehicle. The lifting device can be a powered or manual crank device that lifts the recreational vehicle. The ramp can be used to transport other vehicles into the truck and also provides protection of the wheels of the recreational vehicle against here the vehicle is stored.

Abstract: A wheel chair lift device includes a lift car selectively elevated above a base, along with protective skirting covering the region below the lift car. Exposed portions of the protective skirting subject to lateral inward deformation are provided with skirt deformation sensors for detecting abnormal inward deformation of such skirt portions. The skirt deformation sensors include a spring or other elongated deformable member that extends generally parallel and proximate to the portion of the skirt being sensed. A sensor detects that the elongated member has been laterally displaced from its usual longitudinal axis and generates an electrical signal. In response to such electrical signal, the lift device stops further movement of the lift car.

Abstract: A transfer device to assist a user in moving between vertically displaced locations has a storage enclosure mounted or mountable to the exterior of a motor vehicle. The storage enclosure protects components from external conditions, weather, etc., and typically is made of steel, plastic, etc. A user platform is supported on a drawer assembly that can be completely encased in the storage enclosure. Movement of the drawer assembly is controlled by a drawer extension mechanism that selectively extends and retracts the drawer assembly into and out of the storage enclosure between a stored position completely inside the storage enclosure and an operative position outside the storage enclosure. When the drawer assembly is in an operative position outside the storage enclosure, a platform elevating mechanism can raise and lower the user platform between a lower, compacted storage position and an elevated position using a scissors linkage that links the user platform to a drawer assembly support such as a tray.

Abstract: A motor vehicle collects paper. The motor vehicle includes a collection compartment configured to receive the paper. It also includes at least one of a bin lifting device configured to lift a bin to deposit the paper in the collection compartment and a moving floor configured to transport the paper within the collection compartment. The motor vehicle further includes at least one battery disposed within or attached to the collection compartment configured to power an actuator for at least one of the bin lifting device and the moving floor.

Abstract: A method and apparatus for positioning and supporting the work platform of a mobile workover rig is disclosed. The work platform of the preferred embodiment of the present invention utilizes a unique support structure and automated positioning system for positioning the work platform at the desired height above the wellhead equipment. The preferred embodiment of the present invention utilizes a specialized automated “pinning” system that secures the work platform at the desired height. Additionally, the present invention utilizes one or more support cylinders to position and support the work platform in the horizontal position over the wellhead equipment. The automated positioning and pinning system of the present invention is a unique system that significantly reduces the time required to position the work platform of a mobile workover rig in the operating position, as well as significantly reduces the risk of injury to rig personnel assisting in the positioning operations.

Abstract: A keg conveying trolley has a pair of wheels, a central post and a slide which carries a hook for grasping the keg rim. The slide is lockable at different keg heights. A foot plate assists in tipping the trolley to an inclined position for wheeling the keg from one place to another. The keg stacking version has a winch worked by hand or a cordless drill. The keg is supported by a rise and fall carriage. The carriage can be modified to be multitask. Variants can lift gas bottles on their side, truck tyres for placing on wheel studs and odd shaped loads.

Abstract: A dolly is particularly adapted to lift, support and maneuver a 20-foot shipping container. A shipping container support frame also supports a shipping container capture assembly. The capture assembly includes a pair of parallel, opposing shipping container capture slides. A pair of hydraulic jacks is attached to each capture slide. The jacks move shipping container engagements pins vertically. The slides move the shipping container laterally and the jacks move it vertically to pick it up and allow the support frame to move under the container. The support frame has steerable wheels for movement. Counterweights or auxiliary container stabilizers are unnecessary.

Abstract: Portable vehicular hoist systems include a truss assembly having a joist member with forward and rearward ends, a pair of rafter members each having upper and lower ends, and a forward connection assembly for connecting the upper ends of the rafter members to the forward end of the joist member to allow for relative pivotal articulated movements therebetween. The rafter members may thus be pivotally moved between a stowed condition wherein the rafter members are oriented generally parallel to the joist member and an operative position wherein the rafter members extend downwardly and laterally outwardly from the joist member. A hoist assembly may be provided so as to be connectable to the joist member of the truss assembly to be supported thereby. The rearward end of the joist member and the lower ends of the rafter members may be removably attached to respective connection lugs rigidly fixed to a vehicle's structure, e.g., an aircraft fuselage at an opening therein.

Abstract: A portable wheel chair lift device includes a lift car, a support base, and a lifting mechanism coupled thereto to selectively raise or lower the lift car while allowing the floor of the lift car to be fully-lowered to the ground surface. A scissors-like brace selectively locks the front door of the lift car to the support base when the lift car is elevated. The lift car floor can be folded and collapsed to a reduced width allowing transport through narrow. Transport casters are removably mounted to the bottom of the lift car to facilitate transport. The lift device includes a height adjustment control within the lift car to repeatably raise the lift car to the height of a stage.

Abstract: Apparatus and method for loading articles, such as wild game or the like, into an all terrain vehicle (ATV). The device provides a tripod-type support on the front upper part of the ATV having a pulley at its apex whereby the cable from a winch on the front of the ATV is passed over the pulley and then extends over the ATV to the rear of the ATV where a sled is placed on the rear of the ATV so that an article placed at the base of the sled can be pulled up the sled and loaded into the ATV.

Abstract: The vehicle is adapted for use in hospitals and nursing homes, and is provide with features and safety mechanisms that are needed as innovated support for medical caregivers. The transport vehicle consisting of a frame part that is generally attached to the chassis with nut, bolts, screws and sealant as part of a constructing process that includes welding and joining an instrument projecting from a main part to a frame plate. Left and right side running boards consist of clamps for inserting into metal brackets attached on both side of the vehicle in a manner that allows for removing the runner boards whenever they are not needed. The invention consisting of a multipurpose plastic folding chair is provided for lifting patients from their in-house bed and placing them into a passenger bed of the transparent passenger compartment for transporting the patient to a treatment location.

Abstract: A cart stop suitable for use with a lift platform is described. The cart stop has a closed position which allows a cart or other wheeled device to move over it. The cart stop also has an open position which prevents the cart or other wheeled device from rolling off of the lift platform.

Abstract: Multitask vehicles for military use, rescue, transport, and explosive detection and removal. In one embodiment, the multitask, motorized vehicle, includes: a vehicle body having a rigid frame with a pair of front wheels and a pair of rear wheels mounted thereon; and a rotary mounting platform disposed on top of the vehicle body and which has a mounting portion being configured to interchangeably mount and remove various secondary systems or components, thereby permitting the multitask, motorized vehicle to change functions. Other embodiments are disclosed.

Abstract: A retractable ramp system mounts a slideable ramp between lateral rail members which extend the length of a truck chassis and a container mounted thereon. The ramp is slideably suspended from a guide rail running parallel to the lateral rail members by means of a carriage component, itself slideably mounted within the guide rail. It is readily and easily extended and retracted by one person. When positioned directly on a truck chassis, the rail system is located above the hydraulic, electrical, and other mechanical systems positioned within the well of the truck chassis, such that the ramp is slideably moveable over these system components without interfering with them or any other part of the truck chassis. The ramp system is conveniently used for loading and off-loading containers which rest on the truck chassis or which are elevated above the chassis.

Abstract: A vehicle, configured to transport an object, said vehicle among other components, comprising: a load bearing member; a line; an actuator coupled to said vehicle and adapted for applying a tensile force to said line in response to an actuator command, and disposed and adapted for transmitting at least a portion of said tensile force to said load bearing member; an end-effector mechanically coupled to said line and adapted for transmitting said tensile force and an operator force to said object and for generating an operator input signal; and a controller adapted for generating said actuator command from said operator input signal.

Abstract: The present invention is directed to a wheelchair lift apparatus (1) for mounting to a vehicle, e.g.

Abstract: A controller, control system and method for controlling an auxiliary device comprising a wheelchair lift, ramp, or the like are provided. An exemplary embodiment of the auxiliary device controller is microprocessor-based and communicates with a vehicle's OEM controller for receiving a plurality of sensor inputs, which originate from OEM and auxiliary sensors, process the sensor inputs, and control various OEM and auxiliary systems relative to the sensor inputs to effect a number of safety interlocks. The controller may operate to coordinate various OEM and auxiliary subsystems to automate auxiliary device operation to reduce operator error.

Abstract: A cement truck lift elevator for assisting an individual with lifting items up to the mouth of a cement truck's mixing drum to reduce the risk of injury to the individual and any bystanders. The elevator includes an elongated, tubular housing that extends from approximately waist-high upwardly to a point adjacent the mouth of the mixing drum. A lift carriage is located within the housing and is vertically moveable, and axially rotatable at points, relative to the housing. A conveyor platform for holding items is connected to the lift carriage by a mounting arm that extends through a vertically-elongated guide slot in the housing. A lift cable extends from a drive winch, through the frame, to the lift carriage. By operating the drive winch, the lift carriage and the attached conveyor platform are moved vertically along the housing to lift items placed thereon.

Abstract: A system and method of loading and delivering goods which may include rolling trays adapted to roll into a truck trailer. The truck trailer may have rails at different heights allowing for the high density packing of trays within the trailer. The trailer may have a lift mechanism with rails which allows rolling trays to be placed onto the rails, or to be rolled onto elevated rails off of mating rails. The lift mechanism may be adapted to raise the rolling trays to different heights associated with the rails within the trailer.

Abstract: The invention relates to a lifting apparatus for use in a transport vehicle to lift a load at a height of a loading space of the vehicle, wherein the lifting apparatus comprises: a guide member provided with rails, wherein a movable displacement unit is mounted, a rack of a rack-and-pinion arrangement provided within the guide section and wherein the rack-and-pinion arrangement engages with the displacement unit, a carrier section that extends along a main axis and wherein said carrier section is connected at its first end to the displacement unit, a positioning surface connected to an opposite end of the carrier section to position a load for lifting a force compensator which exerts a force on the carrier section, essentially in the direction of the longitudinal axis thereof in order to bear at least a portion of the weight load.

Abstract: Loading platforms (16) of tail lifts (13) are usually raised and lowered or pivoted by hydraulic cylinders. Hydraulic cylinders require a hydraulic unit. Furthermore, there is a risk of contamination through unsealed hydraulic lines. To raise, lower and/or pivot the loading platform (16) of the tail lift (13), the invention makes provision to use roller screw mechanisms (19) which are driven by hollow-shaft electric motors (23). As a result, hydraulic drives for the loading platform (16) are no longer required. Each roller screw mechanism (19) is driven by the hollow-shaft electric motor (23). The unit consisting of the roller screw mechanism (19) and the hollow-shaft electric motor (23) operates in principle like a known hydraulic cylinder and also has approximately the same dimensions, with the result that hydraulic cylinders can be replaced by roller screw mechanisms (19) with hollow-shaft electric motors (23) without significant modifications to the tail lift (13).