Abstract: A construction machine for the treatment of ground surfaces includes a machine frame, a drive motor, a work drum supported from the machine frame and including exchangeable tools fastened to the work drum, a belt drive and an auxiliary drive. The belt drive includes a motor-side pulley connected to the drive motor, a drum-side pulley connected to the work drum, and at least one drive belt connecting the motor-side pulley to the drum-side pulley. The auxiliary drive may be permanently coupled to the belt drive, or the auxiliary drive may include an adjustment mechanism for moving the auxiliary drive between a coupled and an uncoupled position.

Abstract: A method and apparatus for measuring the amount of fuel aboard a spacecraft under weightless conditions utilize at least one orifice, at least one flow latch valve for the selection of an orifice to be used, and at least one control valve for releasing a stream of a pressurizing gas from at least one high-pressure tank in order to restore pressure in a fuel tank following a pressure reduction due to withdrawal of fuel. The amount of fuel remaining in the fuel tank is determined based on the time required to restore fuel tank pressure bv a flow of gas from the high pressure tank to the fuel tank, via the orifice.

Abstract: In a construction machine 1 for the treatment of ground surfaces, comprising a chassis 2 carrying a machine frame 4, a drive motor 6, a work drum 8 supported on the machine frame 4 and having exchangeable tools 14 fastened to its outer surface 12, and a drive line 18 for the work drum 8 comprising at least the drive motor 6 and a transmission coupled to the drive motor 6, it is provided that an auxiliary drive 20, adapted to be coupled to the drive line 18, is arranged to rotate the work drum 8 in the raised condition of the drum by a predetermined or selectable rotational angle, the torque of the auxiliary drive 20 being higher than the moment of inertia of the work drum 8 and of the drive line 18 in the switched-off or decoupled state of the drive motor 6.

Abstract: A regulating device for regulating the course of a gas turbine plant has at least one sensor for sensing a measurement variable and for outputting a measurement signal which represents the measurement variable; at least one adjusting system for influencing air and/or fuel supply to a combustion chamber of the gas turbine plant on the basis of a correcting variable; and a regulator connected to the at least one sensor so as to receive the measurement variable and to the at least one adjusting system for outputting the correcting variable, the regulator being designed to determine the correcting variable on the basis of the measurement variable received and its deviation from a pilot variable. At least one sensor is designed to sense the variation in time of at least one burner or combustion chamber parameter as measurement variable.

Abstract: A method for operating a gas turbine comprising a compressor, a combustion chamber and a turbine is to allow a particularly safe and reliable operation of the gas turbine. Furthermore, a gas turbine and gas and steam turbine plant, which are especially suitable for carrying out the method, are disclosed. For this purpose, the compressor discharge pressure is used as a control variable.

Abstract: A chisel holder system including a base part and a chisel holder. The base part includes a socket wherein the chisel holder with a plug-in insert is introduced. The chisel holder has a bearing surface supported on a supporting surface of the base plate, and the base part has a shoulder connected to the supporting surface. A replacement chamber is formed between the shoulder and a facing end surface of the chisel holder. According to this invention, the supporting surface is placed in the transition region in relation to the shoulder by at least one recess of the shoulder so that the flat-shaped connection between the supporting surface and the shoulder, in the region of the recess, is interrupted in order to optimize the resistance to wear and tear of the base part.

Abstract: The device includes an air release valve for a fuel tank of a motor vehicle, the air release valve comprising a housing defining at least one inlet opening therein, a central axis and a wall disposed proximate the inlet opening, the wall defining at least two outlet openings therein, the two outlet openings being sized differently; a sealing seat disposed about the two outlet openings; a float disposed in the housing moveable along the central axis, the float defining a center aligned with the central axis; and a flexible membrane attached proximate the center and extending freely therefrom to seal the two outlet openings.

Abstract: An automotive construction machine for working ground surfaces, with a machine frame, a drive engine for driving traveling devices and for driving working devices, and a milling drum for milling the ground surfaces, which can be raised, driven by, and can be uncoupled from a drum drive, the milling drum can be moved into a raised position when not in milling mode, and when raised, the rotating direction of the milling drum corresponds to the rotating direction of the traveling devices and remains coupled with the drive engine, and a monitoring device monitors the distance between the milling drum and the ground surface and uncouples the raised milling drum from the drive engine or uncouples the traveling devices from the drive engine or raises the machine frame or generates an alarm signal when the monitoring device detects a deviation that falls below a pre-determined distance, or any of the latter.

Abstract: In a self-propelled road milling machine (1), particularly a cold-milling machine, comprising a track assembly carrying the machine frame (4) via lifting columns (12,13), a milling roller (6) supported on the machine frame (4) for treatment of a ground surface (8) or traffic surface (8), height-adjustable side plates (10) for edge protection, arranged to rest on the ground surface (8) or traffic surface (8) to be treated, a height-adjustable stripping means (14) arranged in the moving direction behind the milling roller (6) and adapted to be lowered, during operation, into the milling track (17) generated by the milling roller (6), and a control means (23) for controlling the milling depth of the milling roller (6), the control means (23) detecting the milling depth of the milling roller (6) from the measurement values of at least one measuring means (16), it is provided that the control means (23) is operative to automatically control the lifting condition of at least one rear and/or front lifting column (12

Abstract: A construction machine, in particular road milling machine, recycler or stabilizer, with a machine frame (4) that is carried by a chassis (2) with a working drum (6) and a drive train (8) comprising at the least a drive engine (10), a traction mechanism (12) for the mechanical drive of the working drum (6) with a drive element, an output element and a traction element (30), a device (14) for switching the torque between the drive engine (10) and working drum (6), and device (16) for driving at least one hydraulic pump; it is provided that elements of the drive train (8) are divided into at least two groups, the first group (3) shows at least the drive engine (10), the second group (5) shows at least the drive element (11) of the traction mechanism, and where the first and the second groups (3, 5) are connected to one another via an articulated coupling device (20).

Abstract: The invention relates to a self-propelled civil engineering machine, in particular a road-milling machine, a road recycler, or a road stabilizer, having a frame carried by a set of running gear, a working unit for performing work required for the civil engineering operation, and in particular a working drum, and a drive unit carried by the frame of the machine, to drive the working drum. A power transmitter is used to transmit the driving power from the drive unit to the working unit. The drive unit of the self-propelled civil engineering machine has a first and a second drive engine, the power transmitter being so designed that the driving powers coming from the first and the second drive engines can be transmitted to the working unit together.

Abstract: In an automotive construction machine, in particular road milling machine (1), recycler (100), or stabilizer, with a machine frame (4) carried by a chassis (2) with preferably vertically arranged lateral outer walls (5), a milling drum (6) mounted in the machine frame (4) for working a ground surface or traffic surface (8), and with an operator's platform (10) with an operating and indicating panel (12) and a seat (14) for a machine driver, it is provided that the operator's platform (10) is moveable on the machine frame (4) transversely to the direction of travel, that the seat (14) for the machine driver is integrated into the operator's platform (10), which is moveable outwards beyond the lateral outer walls (5) of the machine frame (4), that the machine frame (4) is provided with a guide (18) for the operator's platform (10) acting transversely to the direction of travel, and that the guide (18) projects laterally either not at all or just slightly beyond the outer walls (5).

Abstract: Disclosed is an automotive milling machine for machining ground surfaces, comprising an engine frame (2), a movable milling drum (8) which is mounted on the engine frame (2), at least one conveying device (14,18) which is arranged on the engine frame (2) and takes over the milled material (3) from the milling drum (8) at a transfer location (5), and a device (20) sucking off the air that is polluted with dust and fumes. The milled material (3) is enclosed by a duct (16,16a,16b) on the at least one conveying device (14,18), said duct (16) being separated into two sections (16a,16b). The suction device (20) is connected to the first section (16a) of the duct (16) downstream from the first transfer location (5) and sucks off the air that has been polluted during milling at the milling drum (8) as well as inside the first section (16a) of the duct (16) essentially in the direction in which the material is conveyed.

Abstract: The invention relates to a device and method involving closing clips designed for closing a flexible packaging tube, comprising two clip limbs (3) and a clip base (2) arranged between the clip limbs (3), the clip limbs (3) being disposed parallel to each other and perpendicular to the clip base (2). Each clip limb (3) has planar inner surfaces (4) each of which is oriented towards the respective other clip limb (3), and the clip base (2) has an inner surface (41) connecting the inner surfaces (4) of the clip limbs (3). The clip limbs (3) have planar side surfaces (6). When the clip limbs (3) are viewed in cross-section, said side surfaces (6) are arranged perpendicular to the inner surfaces (4) of the clip limbs (3), and the cross-sectional height of the closing clip (1) is smaller than the cross-sectional width (14) of the closing clip (1).

Abstract: The invention relates to a road-building machine whose left front wheel (4) or caterpillar, right front wheel (6) or caterpillar, left rear wheel (8) or caterpillar and right rear wheel (10) or caterpillar are connected to the road-building machine chassis by means of an actuating element and are height-adjustable with respect to the road-building machine frame. According to said invention, different actuating elements are rigidly connected to the road-building machine chassis and forcedly coupled to each other in such a way that the left front wheel (4) or caterpillar and the right rear wheel (10) or caterpillar are height-adjustable in the same direction and with respect to the right front wheel (6) or caterpillar and the left rear wheel (8) or caterpillar are adjustable in the opposite directions. The all wheels (4, 6, 8, 10) or caterpillars are equally height-adjustable.

Abstract: In a self-propelling road milling machine (1), particularly a (recycler or) cold-milling machine, comprising a machine frame (4) carried by a track assemblies (2,3) via lifting columns (12,13), a milling roll (6) supported on the machine frame (4) for treatment of a ground or traffic surface (8), height-adjustable side plates (10) for edge protection, arranged to rest on the ground or traffic surface (8) to be treated, a height-adjustable stripping means (14) arranged in the moving direction behind the milling roll (6) and adapted to be lowered, during operation, into the milling track (17) generated by the milling roll (6), and a control means (23) for controlling the milling depth of the milling roller (6), it is provided that at least one measuring means (16) is operative to detect the lifting, caused by the current milling depth, of a first sensor means resting on the ground or traffic surface (8), and/or the lowering of the stripping means (14) or a second sensor means onto the surface of the milling tra

Abstract: A rear-loader road milling machine with a milling roll, which is arranged in a roller housing open on the bottom, and having an opening between a front part of the roller housing and a road surface, that faces in a direction of travel, which can be closed with a sealing device, the height of which can be altered. The sealing device can be pivoted around an axis in front of the milling roll for the purpose of adjusting the height of the sealing device. As a result of the pivotability of the sealing device on an axis, it becomes possible to pull the sealing device slidingly above the road surface so that it follows any unevennesses, for example, waviness of the road surface or existing milling tracks, following these unevennesses by pivoting frontward and backwards. Interruption or even blocking of the advance by jamming is excluded in this way. The sealing device also provides safe protection against milled material thrown forward.

Abstract: An automotive construction machine for working ground surfaces, with a machine frame, a drive engine for driving traveling devices and for driving working devices, and a milling drum for milling the ground surfaces, which can be raised, driven by, and can be uncoupled from a drum drive, the milling drum can be moved into a raised position when not in milling mode, and when raised, the rotating direction of the milling drum corresponds to the rotating direction of the traveling devices and remains coupled with the drive engine, and a monitoring device monitors the distance between the milling drum and the ground surface and uncouples the raised milling drum from the drive engine or uncouples the traveling devices from the drive engine or raises the machine frame or generates an alarm signal when the monitoring device detects a deviation that falls below a pre-determined distance, or any of the latter.

Abstract: Disclosed is an automotive milling machine for machining ground surfaces, comprising an engine frame (2), a movable milling drum (8) which is mounted on the engine frame (2), at least one conveying device (14,18) which is arranged on the engine frame (2) and takes over the milled material (3) from the milling drum (8) at a transfer location (5), and a device (20) sucking off the air that is polluted with dust and fumes. The milled material (3) is enclosed by a duct (16,16a,16b) on the at least one conveying device (14,18), said duct (16) being separated into two sections (16a,16b). The suction device (20) is connected to the first section (16a) of the duct (16) downstream from the first transfer location (5) and sucks off the air that has been polluted during milling at the milling drum (8) as well as inside the first section (16a) of the duct (16) essentially in the direction in which the material is conveyed.

Abstract: At a milling machine to work ground surfaces, with a machine frame, a milling drum supported at the machine frame, at least one transport device arranged at the machine frame which accepts the milled material from the milling drum, as well as with a suction device for the air polluted with dusts and vapors, whereby the milled material on the at least one transport device is enclosed by a channel, the suction device is connected to a rear channel section of the channel in the direction of the material transport and sucks off the air polluted during milling at the milling drum and in the rear channel section essentially in the direction of the material transport, it is provided that the suction device consists of a suction ventilator, a separator device for solids and a suction channel which is connected to the rear channel section, that the suction ventilator is arranged downstream of the separator device, and that the suction device disposes of the separated solids onto the transport device in a forward chann