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: 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

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: In a method for optimizing a cutting process in milling machines which are used to machine road coverings, which comprise a milling device fitted with milling tools which is sprayed with liquid in order to cool the milling tools, in addition to a drive motor, the following steps are provided: detection of the at least one parameter which is representative of the instantaneous work output of the milling device and controlling the amount of cooling liquid supplied according to the at least one parameter which is representative of the instantaneous work output of the milling device.

Abstract: The disclosure describes a rear-loader road milling machine with a milling roll, which is arranged in a roller housing open on the bottom, whereby an opening between a front part of the roller housing and a road surface, facing in a direction of travel a, can be closed with a sealing device, the height of which can be altered. The sealing device can be pivoted around an axis in the direction of travel 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, which is arranged in the direction of travel in front of the milling roll, it becomes possible to pull the sealing device slidingly above the road surface so that it follows the unevennesses, for example, the 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.

Abstract: In order to take account of coupling in the controlled systems and, in addition, regulating variable limitations and to permit reliable control of a gas turbine set, a method and a control device for controlling a gas turbine set is provided, in particular in gas and steam power stations, in which a regulating variable composed of a plurality of partial regulating variables is supplied to at least two servo elements of the gas turbine set, and in which the partial regulating variables for the individual regulating variables are formed from control deviations by means of individual transfer functions.

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 chisel-holder changing system for a road milling machine, a coal cutting machine or the like to which a chisel-holder is fastened in an exchangeable manner by means of a connecting mechanism. The chisel-holder accommodates at least one chisel that can be exchanged. The middle longitudinal axis of the chisel is set at an operating angle of less than 90° with respect to the surface to be worked. In order to be able to obtain varied removal results using such a chisel-holder changing system, the chisel-holder can be fixed in two or more configuring positions to the base part and in different attachment positions of the chisel, the middle longitudinal axis of the chisel is slanted at various working angles.

Abstract: A device for digging and backfilling of ditches, in particular for laying pipes, comprising an automotive travelling mechanism (2) carrying a machine frame (4) with an upper structure, a boom (6) pivoted on the machine frame (4) and having a plurality of boom arms (8, 10, 12) connected with each other with hinges and an excavator bucket (16) pivoted on the free end of the boom (6) is provided with a milling/mixing rotor (22) mounted to the excavator bucket (16).

Abstract: A device for digging and backfilling of ditches, in particular for laying pipes, comprising an automotive travelling mechanism (2) carrying a machine frame (4) with an upper structure, a boom (6) pivoted on the machine frame (4) and having a plurality of boom arms (8, 10, 12) connected with each other with hinges and an excavator bucket (16) pivoted on the free end of the boom (6) is provided with a milling/mixing rotor (22) mounted to the excavator bucket (16).

Abstract: A device for digging and backfilling of ditches, in particular for laying pipes, comprising an automotive travelling mechanism (2) carrying a machine frame (4) with an upper structure, a boom (6) pivoted on the machine frame (4) and having a plurality of boom arms (8, 10, 12) connected with each other with hinges and an excavator bucket (16) pivoted on the free end of the boom (6) is provided with a milling/mixing rotor (22) mounted to the excavator bucket (16).

Abstract: In a device for milling off ground surfaces, especially roadways, having a wheel frame carrying a machine frame, a milling roller supported in the machine frame and extending transversely to the direction of travel, at least one conveyor means arranged in front of the milling roller in the direction of travel for removing the milled material, and having a shield arrangement extending transversely to the direction of travel between the milling roller and the conveyor means having a vertical cover plate with a passage opening for the milled material, it is provided that the end, on the side of the milling roller, of the conveyor means is dismountably supported in a belt shoe fixed to the machine frame in a height-adjustable manner, and that the belt shoe and the conveyor means comprise guiding means and coupling means adapted to one another.

Abstract: A road construction machine for the treatment of roadways, comprising an automotive wheel frame consisting of a steerable frontal wheel frame axle (6) and two rear support wheels (14, 16) independent from each other, comprising a driver's platform (4), for a driver of the vehicle, arranged in the area of the rear support wheels (14, 16) and on a machine frame (8) supported by the wheel frame, comprising a working means (20) arranged in or on the machine frame (8) and roughly flush with the machine frame (8) on one side, namely the so-called zero extension side (24), comprising a driving motor for the driving power required for driving the driving means (20) and for moving the vehicle, the rear support wheel (16) arranged on the zero extension side being pivotable from an exterior end position (26) projecting beyond the zero extension side (24) to a retracted interior end position (28) where the support wheel (16) does not project beyond the zero extension side, provides that the pivotable support wheel (16) i

Abstract: In a machine used to refurbish roads, having a driver's cab for one operator, an automotive running gear with two axles (4) and a working roller (8) that is mounted to pivot relative to the machine frame and that is enclosed in a hood (7) which defines a working chamber, and having a drive motor (9) with the necessary output to drive the working roller (8) and to power the vehicle's travel, the invention provides that a drive unit containing the working motor (9) is mounted in a pivoting frame (13) and forms a unit (2) that can be pivoted relative to the machine frame (1), that the working roller (8) is also mounted in the pivotable unit (2) and, together with the latter (2), can be pivoted relative to the hood (7), which has a fixed mounting to the machine frame (1), and that the working roller (8) is directly weighted by the unit (2), virtually the entire machine weight being concentrated between the running gear axles (4) and transferred to the pivotable unit (2).

Abstract: A fuel tank arrangement for a motor vehicle. The arrangement includes a fuel tank containing fuel therein and having a gas space disposed above the fuel, and a venting device connected to the fuel tank. The venting device includes an activated charcoal filter and a venting conduit connecting the gas space to the activated charcoal filter for establishing gas communication therebetween. A stop valve is disposed in the venting conduit and is adapted to open gas communication between the gas space and the activated charcoal filter during refueling. Moreover, a fuel separator is disposed in the venting conduit for separating fuel from a gas flow through the venting conduit thereby yielding separated fuel.

Abstract: A cylindrical cutting element for a cutting machine which includes base ps arranged at a uniform distance from each other. A chisel holder which receives an exchangeable chisel is secured with respect to each base element. The chisel holder has a plug connector which allows the chisel holder to be inserted into a plug receiver of the base element, where it is held by a pressure screw on the base part that grips the plug connector. To relieve the plug connector from the forces acting on the chisel, the base part has a projection which extends in an approximately parallel direction to the running direction of the cutting element and a stop that follows the projection in the running direction and forms an angle therewith. The stop limits the insertion of the chisel holder into the base element and absorbs forces transmitted through the chisel to the chisel holder.

Abstract: A cylindrical cutting element for a coal cutting machine with a reamer-conveyor worm or reamer spiral for a coal cutting, disposed projecting at a distance from the surface of the cutting element and comprising base elements attached at uniform distances. A chisel holder with an exchangeable chisel is connected to each base element. The chisel holder is inserted with its plug-in connector into a socket of the base element and is maintained therein by a pressure screw. A time-saving assembly of a cutting element, wherein the base elements can be positioned on and fastened to the surface of the cutting element in a simple manner is attained where receiver pockets are cut along the reamer-conveyor worm or reamer spiral at uniform distances into the surface of the cutting element, the undersides of the base elements end in a base whose cross section is matched to the receiver pockets, and the base elements are introduced, positioned by the base, into a receiver pocket and are fixedly connected thereto.

Abstract: The invention pertains to a theftproofing system for motor vehicles with a locking member which can be engaged in a recess of a closing ring arranged concentrically to a steering shaft (9) and firmly connected to it and, when the locking member is engaged, blocks the steering shaft until a limiting torque is introduced into it.According to the invention, it is proposed that, in the frictional connection between the steering wheel (steering wheel spoke 5) and steering shaft, a slip clutch (3, 4, 8) be provided whose transmittable torque is lower than the limiting torque.

Abstract: A regulator with a hysteresis-affected characteristic curve has a manually operable actuating element for presetting a desired control variable, an axially displaceable control slide for adjusting the preset control variable and a control incline which is coupled to the actuating element. The control incline converts, by means of a rising control face, the adjustment movement of the actuating element into a axial displacement of the control slide. For the purpose of compensating the hysteresis when adjusting a control a variable such that the same control variable is brought about by rotating the actuating element to the left or to the right into the same setting, the control incline bears a toothing along its control face. Each tooth has, in two planes which extend along the displacement direction of the control face and are perpendicular to one another, a sawtooth-like contour with in each case a rising edge for running up the control slide and a falling edge which follows in the displacement direction.