Abstract: A floor-cleaning robot having a chassis for moving the floor-cleaning robot in a direction of travel over a surface to be cleaned, a cleaning implement, a control unit and first and second measuring devices for three-dimensional distance measurement. Each of the first and second measuring devices is configured to sense distance between the measuring device and a plurality of surface elements within a respective solid angle that is spanned from the measuring device. The first and second measuring devices are aligned in such a manner that the direction of travel runs through the first solid angle. The second solid angle is offset in relation to the first solid angle. The control unit is designed to generate and/or update a representation of the surface to be cleaned, on the basis of the distances from surface elements sensed by first and second measuring devices.

Abstract: A floor-cleaning robot having a chassis for moving the floor-cleaning robot in a direction of travel over a surface to be cleaned, a cleaning implement, a control unit and first and second measuring devices for three-dimensional distance measurement. Each of the first and second measuring devices is configured to sense distance between the measuring device and a plurality of surface elements within a respective solid angle that is spanned from the measuring device. The first and second measuring devices are aligned in such a manner that the direction of travel runs through the first solid angle. The second solid angle is offset in relation to the first solid angle. The control unit is designed to generate and/or update a representation of the surface to be cleaned, on the basis of the distances from surface elements sensed by first and second measuring devices.

Abstract: An industrial truck, in particular a fork lift truck, has a driver's seat that is oriented in the forward direction, at least one screen that is located in the vicinity of the driver's seat, a first camera pointing toward the rear of the industrial truck and at least one additional camera that is directed toward the rear. The first camera is provided to view a distant area and the additional camera is provided to view a near area behind the industrial truck. The image taken with the first camera and/or the image taken with the additional camera can be displayed on the screen. There are advantageously two additional cameras to view the near area.

Abstract: The invention relates to a device and a method to ensure the steerability of an industrial truck that has a hydraulic steering system. The invention includes at least one gas generation cartridge (8) and a device (16) to activate the generation of the gas. The invention teaches that energy is available in an emergency for the hydraulic circuit of a hydraulic steering system. On the side of the gas generation cartridge (8), when there is a need to supply energy to the hydraulic circuit, pressure is increased which can then be transmitted to the hydraulic medium. The invention makes available an advantageous emergency power supply system for a hydraulic steering system of an industrial truck.

Abstract: The invention relates to a device and a method to ensure the steerability of an industrial truck that has a hydraulic steering system. The invention includes at least one gas generation cartridge (8) and a device (16) to activate the generation of the gas. The invention teaches that energy is available in an emergency for the hydraulic circuit of a hydraulic steering system. On the side of the gas generation cartridge (8), when there is a need to supply energy to the hydraulic circuit, pressure is increased which can then be transmitted to the hydraulic medium. The invention makes available an advantageous emergency power supply system for a hydraulic steering system of an industrial truck.

Abstract: The invention relates to a device and method to provide energy for hydraulic systems. The device includes at least one gas generation cartridge (2) and a device (5) for the activation of a gas generation. Gas pressure vessels (2) or pyrotechnic gas generation cartridges (2) can be used advantageously as gas generation cartridges (2). The method of the invention includes activating a gas generation when the pressure in a hydraulic circuit drops.

Abstract: A mobile machine, in particular a fork lift truck, having a chassis and a cab located on the chassis. There are one or more pneumatic or hydropneumatic suspension elements to improve comfort and ride quality between the chassis and the cab.

Abstract: An industrial truck, in particular a fork lift truck, has a driver's seat that is oriented in the forward direction, at least one screen that is located in the vicinity of the driver's seat, a first camera pointing toward the rear of the industrial truck and at least one additional camera that is directed toward the rear. The first camera is provided to view a distant area and the additional camera is provided to view a near area behind the industrial truck. The image taken with the first camera and/or the image taken with the additional camera can be displayed on the screen. There are advantageously two additional cameras to view the near area.

Abstract: A mobile machine, in particular a fork lift truck, having a chassis and a cab located on the chassis. There are one or more pneumatic or hydropneumatic suspension elements to improve comfort and ride quality between the chassis and the cab.

Abstract: A machine, in particular an industrial truck, is provided with a hydraulic system that has at least one reservoir (1) for hydraulic fluid and at least one hydraulic pump (5). The hydraulic pump (5) is located inside the reservoir (1). A priority valve (8a) is connected to the hydraulic pump (5) by a flange connection. An electric drive motor (3) of the hydraulic pump (5) can also be located inside the reservoir (1).

Abstract: A hydrostatic machine, in particular of bent axis design comprises a clutch which is provided between the drive shaft and the pistons. The force necessary for clutch engagement is produced by hydraulic pressure forces which are either applied to the pistons or delivered by the pistons depending on whether the machine operates as a motor or as a pump. When the machine neither produces a moment nor receives a moment the clutch is automatically disengaged due to the reduction of the hydraulic pressure forces. According to the invention the clutch helps to prevent hydraulic losses of the machine while running idle and improves the overall efficiency.