Abstract: Damping valve for a shock absorber includes a damping valve body with at least one valve seat surface for a valve disk which is loaded in the lifting direction by a flow of damping medium. At least one support disk arranged on the valve disk determines, by its contour, a lever arm up to an effective surface to which pressure is applied by a damping medium in the lifting direction, and this support disk is pretensioned in direction of the valve disk by a tensioning plate, wherein the damping valve body forms a line of tensioning with the valve disk, support disk and tensioning plate, wherein at least one of the contact surfaces within the line of tensioning is profiled, so that there is a contact circle at the support disk, and the radius of the contact circle matches the provided reference dimension for the contour of the support disk determining the lever arm length.

Abstract: Damping valve for a shock absorber includes a damping valve body with at least one valve seat surface for a valve disk which is loaded in the lifting direction by a flow of damping medium. At least one support disk arranged on the valve disk determines, by its contour, a lever arm up to an effective surface to which pressure is applied by a damping medium in the lifting direction, and this support disk is pretensioned in direction of the valve disk by a tensioning plate, wherein the damping valve body forms a line of tensioning with the valve disk, support disk and tensioning plate, wherein at least one of the contact surfaces within the line of tensioning is profiled, so that there is a contact circle at the support disk, and the radius of the contact circle matches the provided reference dimension for the contour of the support disk determining the lever arm length.

Abstract: A vibration damper, especially for a motor vehicle, with at least one tubular structural component part, an axially displaceable piston rod which is guided out of the tubular structural component part, a fastening element which is fixedly secured with the piston rod and which can be fastened with a wheel suspension or a body of a motor vehicle, and a protective tube which is arranged at the piston rod and encloses the tubular structural component part. The protective tube is connected with the piston rod in a positive engagement and/or in a frictional engagement in its region facing the fastening element.

Abstract: Knuckle eye, in particular for a vibration damper, comprising a plastic body which has a transverse opening for a fastening device, a connection opening for the connection to the unit to be supported, whereby the connection opening has a metal reinforcement sleeve to increase the strength of the connection. The reinforcement sleeve, by way of a portion which deviates from the uniformly round shape, forms a positive or interlocking connection with the plastic body, whereby a reinforcement band is inserted into the plastic body concentric to the transverse opening, which reinforcement band partly surrounds the reinforcement sleeve in the vicinity of the positive connection.

Abstract: Hinge eye, in particular for a vibration damper, comprising a plastic body with a transverse opening for a fastening means, and a connection opening for the unit to be retained, characterized by the fact that the connection opening has a metal reinforcement sleeve to reinforce the connection.

Abstract: A vibration damper includes a pressure tube in which a piston on a piston rod which can move axially is guided by means of a piston rod guide which closes the pressure tube. The piston divides the pressure tube which is filled with damping medium into two working chambers. A piston ring which covers a peripheral area of the piston has an essentially U-shaped cross section with retaining surfaces, whereby the retaining surfaces are supported on the upper and lower side of the piston. On at least one side of the piston, at least a portion of the piston on which the retaining surfaces of the piston ring are engaged has a profiled surface. The profiled surface is configured such that the distance between one side of the piston and a hypothetical reference plane which runs parallel to the piston side is alternately less than and greater than a specified size of fit.

Abstract: Vibration damper, in particular a single-tube vibration damper, comprising a cylinder which is closed on the end by a piston rod guide which centers an axially movable piston rod with a piston, whereby the piston with its damping valves divides the cylinder into an upper and a lower work chamber, and a decompression stop in the form of a compression spring with a round wire cross section which is located in the upper working chamber, characterized by the fact that the compression spring is designed in multiple stages, whereby a first longitudinal segment of the spring interferes with the cylinder and is held in the cylinder by means of this interference fit, and an additional longitudinal segment forms a guide with respect to the piston rod.

Abstract: In a vibration damper for a motor vehicle a flow path connecting a working chamber of the cylinder with a damping behavior control unit is confined by a flow path tube surrounding the cylinder. The flow path tube is provided adjacent its axial end portions with bead-shaped grooves accommodating respective sealing rings. These sealing rings are according to an illustrated example of the invention in engagement with an external surface of the cylinder. The bead-shaped grooves are obtained by non-cutting machining.

Abstract: A casing tube of a vibration damper is provided with a connecting sleeve extending substantially radially from the radially outer circumferential surface of the casing tube. At the location where the connecting sleeve is fastened to the casing tube, the casing tube is provided with a planar face area.

Abstract: A braking system is provided for a construction machine, including a ground engaging drive apparatus. The construction machine includes a hydraulic drive system, including a hydraulic motor connected to the ground engaging drive apparatus and a first hydraulic pump for supplying fluid under pressure to the motor, the pump and motor being connected so that a braking force may be applied to the drive apparatus by varying the discharge volume of the first pump. A first valve is connected between an inlet and an outlet of the first pump for shunting the pump. An emergency brake is connected to the ground engaging drive apparatus, and is mechanically biased in a brake applying direction. A second hydraulic pump supplies fluid to a hydraulic actuator for releasing the emergency brake. A second valve is located between the second pump and the hydraulic actuating means.

Abstract: A vibrating roller is provided comprising a frame with a roller barrel mounted in the frame. The roller barrel includes first and second partial roller barrels, said first partial roller barrel including a central hollow shaft fixed thereto and extending axially therefrom. The second partial roller barrel is rotatingly mounted on said hollow shaft. A rotating unbalanced body is disposed in said hollow shaft for imparting vibratory motion to the first and second partial roller barrels. A prime mover is mounted on the frame, and drives the first and second partial roller barrels through a differential gear assembly. The differential gear assembly includes an externally toothed ring gear which is driven by a driving pinion which itself is drivingly connected to the prime mover. Connected to the externally toothed ring gear are a plurality of beveled pinion gears arranged to rotate about radial axes.

Abstract: An improved unbalance vibration generator adapted to be driven at varying rotational speeds while maintaining a substantially constant exciting force throughout a range of rotational speeds. The generator includes an unbalance mass comprising first and second unbalance masses journaled for rotation and angularly offset from each other 180.degree. about the axis of rotation. The first unbalance mass is journaled on the axis of rotation and the second unbalance mass is radially movable in relation thereto. This radial movement is restrained by cam and spring means which provide predetermined non-linear restraint of the second unbalance mass relative to the first unbalance mass.

Abstract: A polyethylene composition of high wear resistance and a method of preparing it which comprises a polyethylene prepared according to a low pressure polymerization process and which has a molecular weight above about 1,000,000, containing an organic peroxide cross-linking agent homogeneously dispersed in the polymer, which has been pre-compressed at a high pressure, plasticized at elevated temperature and pressure and cooled.

Abstract: Flameproof moulding compositions, which are based on polyolefins and made from a pulverulent blend comprising a polyolefin as its essential ingredient and a plurality of flame-retardant ingredients. The flame-retardant ingredients comprise red phosphorus and at least one organic nitrogen compound which carbonizes after inflammation. The moulding compositions contain the flame-retardant ingredients in a total proportion of at most about 30 weight %. Red phosphorus and organic nitrogen compound are used in a quantitative ratio between 99:1 and 1:99.

Abstract: Improved flameproof moulding compositions, which are based on polyolefins and made from a pulverulent blend comprising a polyolefin as its essential ingredient and a plurality of flame-retardant ingredients. The flame-retardant ingredients comprise red phosphorus and at least one organic nitrogen compound which carbonizes after inflammation. The moulding compositions contain the flame-retardant ingredients in a total proportion of at most about 30 weight %. Red phosphorus and organic nitrogen compound are used in a quantitative ratio between 99:1 and 1:99.The improved moulding compositions contain as a stabilizerA. between about 1 and 10 weight % of amidosulfonic acid or ammonium bisulfate, based on the total quantity of the flame-retardant ingredients, orB. between about 5 and 15 weight % of a paraffin oil having a density between about 0.83 and 0.88 g/cc and a viscosity between about 15 and 380 centipoises, or of a mineral oil boiling within the range 170.degree. and 350.degree.

Abstract: Flameproof moulding compositions, which are based on polyolefins and made from a pulverulent blend comprising a polyolefin as its essential ingredient and a plurality of flame-retardant ingredients. The flame-retardant ingredients comprise red phosphorus and at least one organic nitrogen compound which carbonizes after inflammation. The moulding compositions contain the flame-retardant ingredients in a total proportion of at most about 30 weight %. Red phosphorus and organic nitrogen compound are used in a quantitative ratio between 99:1 and 1.99.