Abstract: In a parking system having movable parking platforms, at least a part of the parking platforms of a front row, when viewed in the direction of entry, has a roof spanning the parking platform. The parking platforms provided with a roof can optionally be vertically adjusted to different positions, i.e., to an entry/exit position, in which the parking platform is on an entry level which allows a vehicle to be driven over in order to be parked, or to a drive-over position, in which the roof is located on the entry level and can be driven over by a vehicle driving in to reach a parking platform located in the row behind it, as well as in a parking position which is lowered in relation to the drive-over position and in which a further parking platform can be moved transversely over the roof.

Abstract: A lift apparatus having a plurality of cylinder-piston assemblies arranged in pairs with respectively one hydraulic medium supply and drain. For each pair of assemblies, one cylinder-piston assembly is a command assembly and connected thereto is a hydraulic pressure supply. The respective other cylinder-piston assembly is a response assembly, with its supply connected to the drain of the command assembly. For synchronized lifting at several lift points without active regulation, at least three pairs of assemblies hydraulically cooperate with each other in a serial circuit with the hydraulic medium drain of the command assembly of an upstream pair of assemblies is connected to the hydraulic medium supply of the response assembly of the next downstream pair of assemblies and the hydraulic medium drain of the command assembly of the last pair of assemblies is connected to the hydraulic medium supply of the response assembly of a first assembly pair.

Abstract: The problem of providing a cylinder/piston unit which can be installed in a relatively space-saving manner, in particular, for use in a master/slave arrangement is solved by virtue of the fact that a first, outer hydraulic cylinder (2) is provided, in which a first piston (6) is mounted sealingly with respect to the cylinder inner wall of the first hydraulic cylinder (2) and longitudinally movable in the latter, and the first piston (6) supports a second, inner hydraulic cylinder (3), in which a second piston (9) is mounted sealingly with respect to the cylinder inner wall of the second hydraulic cylinder (3) and longitudinally movable in the latter. The second, inner hydraulic cylinder (3) supports a piston rod (10), and the piston rod (10) is connected at the end thereof which is remote from the second piston (9) to an end (4) of the outer hydraulic cylinder (2).

Abstract: In order to provide an automated parking system for vehicles in which a vehicle which is to be parked is parked on a pallet at a transfer station and the pallet is then transferred by a mechanical device and moved to a storage location, and which, on the one hand, is technically simple, and therefore has little susceptibility to faults, and is cost-effective, and on the other hand can make it possible to use existing storage areas as parking space with minor structural modifications and installations, according to the invention multiple pallets are provided which can be stored at storage locations of the parking system at a raised level with respect to the floor of the building in such a way that a low-floor maneuvering vehicle can drive under them.

Abstract: A car lift for motor vehicles, having at least a first and a second lift element, each having at least one hydraulic cylinder/piston assembly (9, 9?, 10) for lifting motor vehicles, with each cylinder/piston assembly including an inlet (9a, 9a?, 10a) for feeding and an overflow for draining hydraulic fluid when the motor vehicle is raised. The first cylinder/piston assembly (9, 9?) is embodied as the master assembly, by its overflow being connected in a fluid-guiding fashion to the inlet (10a) of the second cylinder/piston assembly (10) embodied as a slave assembly. At least one of the cylinder/piston assemblies (9, 9?, 10) has an overflow channel (9c, 10c) arranged and embodied such that only in an area of the end position at maximally raised or maximally lowered vehicles the inlet (9a, 9a?, 10a) of the cylinder/piston assembly is connected in a fluid-conducting fashion to the overflow channel (9c, 10c).

Abstract: A hoist for vehicles having two lifting columns arranged at both sides of a vehicle, each having two support arms that are supported in a horizontally pivotal and longitudinally adjustable fashion at their lifting column, and each having at their free end a support plate. These support plates are positionable at support positions underneath a vehicle as specified by the vehicle manufacturer by an appropriate movement of the support arm. The manufacturer support positions are saved as target positions according to corresponding vehicle model in a data memory of the hoist, and coordinates of actual positions of the support plates are determined by measurements and perhaps calculations. A computer makes a comparison between the target and actual coordinates, and enables a lifting process of the support arms only when differences between the target and the actual coordinates are within a predetermined tolerance.

Abstract: A lift apparatus having a plurality of cylinder-piston assemblies arranged in pairs with respectively one hydraulic medium supply and drain. For each pair of assemblies, one cylinder-piston assembly is a command assembly and connected thereto is a hydraulic pressure supply. The respective other cylinder-piston assembly is a response assembly, with its supply connected to the drain of the command assembly. For synchronized lifting at several lift points without active regulation, at least three pairs of assemblies hydraulically cooperate with each other in a serial circuit with the hydraulic medium drain of the command assembly of an upstream pair of assemblies is connected to the hydraulic medium supply of the response assembly of the next downstream pair of assemblies and the hydraulic medium drain of the command assembly of the last pair of assemblies is connected to the hydraulic medium supply of the response assembly of a first assembly pair.

Abstract: A hoist for vehicles having two lifting columns arranged at both sides of a vehicle, each having two support arms that are supported in a horizontally pivotal and longitudinally adjustable fashion at their lifting column, and each having at their free end a support plate. These support plates are positionable at support positions underneath a vehicle as specified by the vehicle manufacturer by an appropriate movement of the support arm. The manufacturer support positions are saved as target positions according to corresponding vehicle model in a data memory of the hoist, and coordinates of actual positions of the support plates are determined by measurements and perhaps calculations. A computer makes a comparison between the target and actual coordinates, and enables a lifting process of the support arms only when differences between the target and the actual coordinates are within a predetermined tolerance.

Abstract: A lifting platform installed in a pit, especially for tracks, has at least two lifting devices. At least one of the lifting devices is movable in the longitudinal direction of the pit for adapting to the axle spacing of the vehicle to be lifted, and at least of one lifting devices has two laterally projecting wheel forks for holding the wheels of a vehicle axle. The lifting device with the laterally projecting wheel forks is combined with an axle lifter, which is allocated to the axle of the wheels in the wheel forks and which is vertically movable independently of the wheel forks.

Abstract: A car lift for motor vehicles, having at least a first and a second lift element, each having at least one hydraulic cylinder/piston assembly (9, 9?, 10) for lifting motor vehicles, with each cylinder/piston assembly including an inlet (9a, 9a?, 10a) for feeding and an overflow for draining hydraulic fluid when the motor vehicle is raised. The first cylinder/piston assembly (9, 9?) is embodied as the master assembly, by its overflow being connected in a fluid-guiding fashion to the inlet (10a) of the second cylinder/piston assembly (10) embodied as a slave assembly. At least one of the cylinder/piston assemblies (9, 9?, 10) has an overflow channel (9c, 10c) arranged and embodied such that only in an area of the end position at maximally raised or maximally lowered vehicles the inlet (9a, 9a?, 10a) of the cylinder/piston assembly is connected in a fluid-conducting fashion to the overflow channel (9c, 10c).

Abstract: A method is provided for controlling a vehicle lifting device, having at least two, preferably moveable, lifting columns (1-4), which are controlled wirelessly. When a switch is activated for raising or lowering the lifting device, a corresponding signal is transmitted wirelessly to the lifting columns (1-4) and additional signals, which are representative of the individual lifting movements, are transmitted to a control device (5). In the case of unacceptably high movement differences between individual lifting columns, the normal operation is stopped. Here, it is essential that for monitoring the wireless signal transmission, the control device (5) exchanges control signals with the lifting columns (1-4) continuously, and the reception of these control signals is monitored at least in one direction.

Abstract: A method is provided for controlling a vehicle lifting device, having at least two, preferably moveable, lifting columns (1-4), which are controlled wirelessly. When a switch is activated for raising or lowering the lifting device, a corresponding signal is transmitted wirelessly to the lifting columns (1-4) and additional signals, which are representative of the individual lifting movements, are transmitted to a control device (5). In the case of unacceptably high movement differences between individual lifting columns, the normal operation is stopped. Here, it is essential that for monitoring the wireless signal transmission, the control device (5) exchanges control signals with the lifting columns (1-4) continuously, and the reception of these control signals is monitored at least in one direction.

Abstract: A lifting platform installed in a pit, especially for tracks, has at least two lifting devices. At least one of the lifting devices is movable in the longitudinal direction of the pit for adapting to the axle spacing of the vehicle to be lifted, and at least of one lifting devices has two laterally projecting wheel forks for holding the wheels of a vehicle axle. The lifting device with the laterally projecting wheel forks is combined with an axle lifter, which is allocated to the axle of the wheels in the wheel forks and which is vertically movable independently of the wheel forks.

Abstract: A lifting platform for motor vehicles has at least one scissor-type framework with at least two lower scissor levers that cross each other and two upper scissor levers that cross each other. Either the upper or lower of two pivotably connected scissor levers is configured with a slot shape of a type which opens toward the other scissor lever, and this other scissor lever sinks at least most of the way into this slot when the platform lift is in its lowered position. Instead of a U-shaped slot configuration, the upper or lower of two pivotably connected scissor levers may have an L-shaped profile opening toward the other scissor lever and permitting it to sink into the crook of the L.

Abstract: A lifting apparatus is provided, in particular a lifting platform, in which a lifting carriage, upon which the load to be lifted can be placed, can be displaced along an arrester rod which is provided with screw threading and on which there is driven by the lifting carriage an easily moveable arrester nut. The arrester nut is supported on its top and bottom by the lifting carriage in such a way that it can rotate, and in this connection the lifting carriage has a braking element which can be brought into a working relationship with the arrester nut in order to prevent any further rotation of the arrester nut. In order to improve the functioning of this arrester apparatus so that it always leads surely to a catching of the falling lifting carriage, even under particularly adverse conditions, an additional safety element is installed which can be actuated either automatically or from the outside.

Abstract: A lifting platform for motor vehicles having two vertically movable columns in which additional lifting elements are disposed is disclosed. The lifting elements are connected to a common drive means via traction means and guide rollers in such a way that the two lifting elements can be driven synchronously with a single drive means.

Abstract: The invention relates to a hoist for motor vehicles, with at least two vertically displaceable columns having on their upper end a support surface for receiving the vehicle, where in a retracted state the columns are disposed below the ground in a pit and the support surface is located approximately at the level of a shop floor. In order to make do with a reduced depth of the pit while retaining the same lifting height of the columns, the columns comprise an interior, vertically displaceable lift element supporting a deflection roller for operation of a cable on its upper end. One end of the cable is attached fixed in place, while the other end of the cable is fastened to a support pipe with a support surface which is vertically displaceable in relation to the lift element, where a sleeve, displaceable in relation to the support pipe, is provided which acts as a telescopic guide when the column is extended.

Abstract: In a scissor-type lifting platform with two pairs of scissors disposed independently of one another, with hydraulic operation, a control cylinder is provided at one pair of scissors which is designed such that it produces the power required for the lifting of both pairs of scissors. A slave cylinder is series connected to said control cylinder at the second pair of scissors, which in the case of the lifting movement of the control cylinder is supplied with pressure medium. In this manner, a synchronization of the two pairs of scissors is achieved perforce and a mechanical connecting arrangement between the two pairs of scissors for the monitoring of synchronization may be eliminated.

Abstract: A lifting mechanism with a lifting platform, a lifting column supporting the platform, a threaded catch rod attached to the column, and an easily workable nut mounted on the rod and surrounded by a housing forming part of the platform. The housing engages the nut through a ball bearing and spring so that the nut rotates and moves up and down with the platform during normal operation. If the platform moves downward rapidly the spring is compressed and a projection on the housing engages the nut to stop downward movement of the platform.