Abstract: An industrial truck with a data bus, to which several electronic units of the industrial truck are connected which send or receive telegrams via the data bus, and with a sending and receiving unit which can acquire data of a transponder present in the sending and receiving range of the sending and receiving unit, wherein the sending and receiving unit is connected to the data bus and analyses telegrams sent via the data bus and/or sends telegrams to the data bus.

Abstract: A braking system for battery-powered industrial trucks, comprising a three-phase driving motor which drives a driving wheel, a first braking device associated with the driving wheel, a brake pedal with which a braking signal generator is associated to generate an electric braking signal corresponding to a first desired braking force in response to the excursion of the brake pedal, a control device for the driving motor, a first conversion unit in the control device which converts said braking signal into a desired torque for the driving motor, a second conversion unit in the control device which converts the actual torque of the driving motor into an actual braking force, a comparator device in a braking control in which the first desired braking force is compared to the actual braking force to form a second desired braking force for the second braking device.

Abstract: An industrial truck with an electronic memory and/or a data transfer unit, an equipment for acquiring utilization data and a control unit, which is connected with the equipment for acquiring utilization data and the memory and/or the data transfer unit, characterised in that the control unit continuously generates an utilization protocol from the acquired utilization data and files it in the memory or transmits it to the data transfer unit.

Abstract: Industrial truck with a display unit for an operator and with a sending and receiving unit directed towards the load pick-up region, which can receive sent data from load goods and from load supports, and an analysing unit, which displays the received data in the display unit, wherein the analysing unit examines the data received from a load good with respect to transportation conditions and displays existing transportation conditions in the display unit.

Abstract: Drive and steering unit for a wheel of a floor conveyor, in which a driving motor and a steering motor are disposed coaxially one below the other and are each one coupled via a drive gear or a steering gear, respectively, with a shaft of the wheel or the bearing equipment of the wheel, respectively, wherein one shaft extends as a hollow shaft and the other shaft extends through the hollow shaft, and an electronic control for the driving motor and the steering motor, which is connected with desired value transmitters for the rotational speed and the steering angle, characterised in that the electronic control has at least one circuit board which is coaxially arranged between the driving motor and the steering motor and/or the steering motor and the steering gear.

Abstract: System for identifying and managing pallets, which are placed at or picked up from bin locations by means of an industrial truck, with the following characteristics: a box-shaped housing, which contains all components required for communicating with transponders as well as evaluating signals from the transponders, in particular a read/write unit, a send/receive circuit and an evaluation unit, wherein the evaluation unit has an interface to an on-board, the box-shaped housing is attached to the bottom side of the lower cross bar of a support for the loading fork between the fork arms, a single transponder is attached to the front side of the middle block of the pallet, and/or a rack support at the entrance that faces the industrial truck is provided with a transponder on a longitudinal support.

Abstract: System for assisting a driver of an industrial truck with the following features: transponders are arranged at predetermined points of the working area of the industrial truck, the transponders are designed so that they transmit a UHF signal upon receipt of a transmission signal, the industrial truck comprises at least one aerial for transmitting and/or receiving an LF signal, an evaluation unit is arranged on the industrial truck which, upon receipt of a signal, sends said signal to an electronic evaluation unit for the UHF signals, the evaluation unit is connected to an on-board computer in the industrial truck.

Abstract: Rotation angle sensor, in particular for an electrical steering system of an industrial truck, in which two magnetic field sensitive sensor elements are arranged on orthogonal axes and a permanent magnet is attached to a shaft extending through the axis intersection point and the output signals X, Y of the sensor elements are given to an evaluation unit, which determines from the two output signals X, Y the rotation angle value by means of a function saved in the evaluation unit, characterized in that for a plurality of predetermined values of one of the output signals X or Y associated ideal values calculated from the geometrical relationship of the sensors of the other output signal Y, X are saved in the evaluation unit, the measured values of the other output signal Y, X are compared with the ideal values and a warning or stop signal is created if the difference between the measured and ideal value reaches a predetermined amount.

Abstract: A steering transmitter assembly for an electronic steering system of an industrial truck, wherein a steering element is coupled to a hub which is rotatably mounted an a bearing component fixed to the vehicle, and wherein an attenuation device is disposed between the bearing component and hub, wherein the hub or bearing component is provided with a gearing portion which is in a driving communication with the pinion of a rotation attenuator and the rotation attenuator, in turn, is located within the bearing component or within the hub in an offset relationship with the axis of rotation of the hub.

Abstract: An industrial truck having a first and a second controller, each of which has an apparatus for a self-diagnosis of sensors and actuators of the controller, including one or more data lines between the first and the second controller for a transmission of operating and diagnostic data of the controllers wherein the operating and diagnostic data are transmitted on one or more interfaces with a common protocol, and a translation device for diagnostic data of the first controller for an interface of the second controller to which the diagnostic data of the second controller is applied, wherein the translation device translates the diagnostic data of the first controller into the same protocol in which the diagnostic data of the second controller is applied to the interface and both the interface and protocol are suited for exchanging diagnostic and operating data to communicate with additional controllers.

Abstract: Method for the prevention of turnover of rear wheel steered vehicles, wherein the rear wheels are steered to attain desired steering angles driven with a desired speed in which method actual slip angles are determined which are compared with pre-set slip angles, in order to intervene in a vehicle steering when an actual slip angle is in a predetermined relation to the pre-set slip angle, in which method further only the slip angles of the steered rear wheels of the vehicle are determined and compared with a predetermined slip angle maximum value, and the steering angle being controlled such that the slip angle is below the predetermined maximum value.

Abstract: A braking system for battery-powered industrial trucks, comprising a three-phase driving motor which drives a driving wheel, a first braking device associated with the driving wheel, a brake pedal with which a braking signal generator is associated to generate an electric braking signal corresponding to a first desired braking force in response to the excursion of the brake pedal, a control device for the driving motor, a first conversion unit in the control device which converts said braking signal into a desired torque for the driving motor, a second conversion unit in the control device which converts the actual torque of the driving motor into an actual braking force, a comparator device in a braking control in which the first desired braking force is compared to the actual braking force to form a second desired braking force for the second braking device.

Abstract: An industrial truck having a first and a second controller, each of which has an apparatus for a self-diagnosis of sensors and actuators of the controller, including one or more data lines between the first and the second controller for a transmission of operating and diagnostic data of the controllers wherein the operating and diagnostic data are transmitted on one or more interfaces with a common protocol, and a translation device for diagnostic data of the first controller for an interface of the second controller to which the diagnostic data of the second controller is applied, wherein the translation device translates the diagnostic data of the first controller into the same protocol in which the diagnostic data of the second controller is applied to the interface and both the interface and protocol are suited for exchanging diagnostic and operating data to communicate with additional controllers.

Abstract: A method for influencing the torque on at least one driving wheel of an industrial truck for the purpose of driving and/or braking it wherein the torque of a driving motor for the industrial truck is reduced by means of a slip regulator at an appropriate amount depending on the slip by determining the slip between the driving wheel and the floor by making a comparison of the circumferential speed measured or calculated for the driving wheel and the vehicle travelling speed measured for the industrial truck, and comparing it to a set-point.

Abstract: An apparatus for controlling a drive system for an industrial truck having an internal combustion engine and a hydrostatic transmission wherein the hydrostatic transmission has a pump the delivery volume of which is variable and at least one hydraulic engine acting on at least one wheel of the industrial truck, comprising a first controller for the speed of the industrial truck in which a desired speed value compares to a actual value arriving from a speed transducer, further in which a speed controller determines a corresponding desired motive force and in which the signal for the motive force and the actual speed is provided to a characteristics stage in which at least one characteristic is stored which assigns approximately optimal rpm values to power values of the internal combustion engine and presets a corresponding desired-value signal for the number of revolutions of the internal combustion engine, and a second controller underlying the first controller having a desired-value and actual-value comparat

Abstract: An industrial truck, particularly a fork-lift truck, wherein the front and rear wheels are supported on a vehicle frame and one of which is adapted to be driven, a load-receiving means which is adjustable at least in height by means of a power-exerting apparatus, and a safety device which detects a tilt of the industrial truck and is in an operative communication at least with an alarm signal emitter, whereby a load sensor is associated with at least one wheel and the safety device has a comparison device which provides a signal to the alarm signal emitter when one or more of the wheel loads measured fall below a preset value.

Abstract: An apparatus for controlling a drive system for an industrial truck having an internal combustion engine and a hydrostatic transmission wherein the hydrostatic transmission has a pump the delivery volume of which is variable and at least one hydraulic engine acting on at least one wheel of the industrial truck, comprising a first controller for the speed of the industrial truck in which a desired speed value compares to a actual value arriving from a speed transducer, further in which a speed controller determines a corresponding desired motive force and in which the signal for the motive force and the actual speed is provided to a characteristics stage in which at least one characteristic is stored which assigns approximately optimal rpm values to power values of the internal combustion engine and presets a corresponding desired-value signal for the number of revolutions of the internal combustion engine, and a second controller underlying the first controller having a desired-value and actual-value comparat

Abstract: A follower industrial truck including a drive motor, a handle lever having a first end which is linked to a steering shaft of the industrial truck to pivot about a horizontal axis, a handle lever head which is movably mounted with respect to the handle lever in a pull and push manner, a spring arrangement between the handle lever and the head, which biases the head in opposite directions towards a neutral position produces a path signal (Sist), the magnitude of the path signal (Sist) being approximately proportional to the extent of the deflection, a first controller which produces a first nomimal value (Isoll) for the current of the drive motor, and a further controller adapted to receive a comparison current value which is achieved by the comparison of the actual current value (Iist) of the drive motor and of the first nomimal value (Isoll) from the first controller in order to produce a setting current value for the drive motor.