Abstract: The invention relates to a method for carrying out the allocation of tire pressure control devices (4a to 4d) to wheel positions in a tire pressure control system of a motor vehicle. Each tire pressure control device (4a to 4d) transmits, at certain time intervals, its individual identifier and a lengthened high frequency signal to the central unit (10) of the tire pressure control system. The high frequency signals have an individual trace which is dependent upon the rotational angle of the wheel and on the time because of the geometry of the wheel box and as a consequence of the rotation of the wheel. In the central unit (10), a time point is fixed from two sequential high frequency signals at which the wheel assumes the same angular position in each case with this wheel being the wheel from which the signals were transmitted. The corresponding wheel has made an integer number of revolutions between the two time points.

Abstract: A sulfur-curable rubber compound for a tire tread rubber of, in particular, a racing tire, which compound comprises at least one diene rubber, at least one filler and at least one plasticizer. The rubber compound comprises 5 to 90 phr of at least one layered silicate modified with alkylammonium ions and free of guest molecules that have been polymerized or swelled in by a prior treatment.

Abstract: The invention relates to a system which includes an air spring (2) which, in turn, encloses an air volume (16). The system also includes a controllable shock absorber (4) connected in parallel to the air volume. Furthermore, the system includes an ancillary volume (22) with which the air volume (16) of the air spring (2) is connected via a controllable throttle (20). The stiffness and the total damping of the system can be pregiven via a control of the throttle (20) and of the controllable shock absorber (4) independently of each other.

Abstract: A device for cleaning the inner walls of vulcanizing molds that are divided into upper and lower partial molds by means of a blasting device/nozzle and a manipulating device, with the blasting device and the manipulating device being accommodated and encapsulated in an isolation hood that is provided with an adapter ring, and with the isolation hood being suspended on a movable boom and connectable to the outer circumference of a partial mold by means of the adapter ring.

Abstract: Process for producing a pneumatic tire that includes an inner liner of a layer that is as air-impermeable as possible, at least one carcass ply provided with strength supports, horn profiles, bead cores, sidewalls, a belt assembly, and a tread. The process includes building-up a partial tire in a production part A, where the partial tire includes at least a carcass body that includes the at least one carcass ply provided with the strength supports, bead reinforcements and cores, core fillers and horn profiles, and an undertread, and shaping and at least partially vulcanizing the partial tire under an internal pressure in a vulcanization mold in a first vulcanization procedure. The process also includes determining a cross-sectional contour for a completed tire and an amount of surface and strength supports to be added to the partial tire prior to a production part B, and building-up the partial tire in the production part B by adding remaining tire components to produce a complete tire.

Abstract: Device for transporting material strips made of rubber or a rubber-like synthetic material and for depositing such material strips on an installation drum for pneumatic tires or its parts, in particular, for depositing narrow apex strips on a bellows drum, wherein the advancing material strips are cut to length from an endless material and positioned on a pattern table within the region of the device.

Abstract: An air spring fines a longitudinal axis and includes a first end member in the form of a cover and a second end member in the form of a roll-off piston at a distance from the first end member. A flexible resilient member is clamped between the first and second end members so as to permit the first and second end members to move toward each other in the direction of the longitudinal axis and the distance between the end members changes during the operation of the air spring. An elevation sensor includes an electrically conductive helix arranged in the direction of the longitudinal axis. The helix has a plurality of turns and is arranged in the air spring so that the helix changes in length when the end members move towards each other in the direction of the longitudinal axis. The first and second end members and the flexible resilient member conjointly define an interior space.

Abstract: Sulfur vulcanizable rubber composition which does not contain aromatic process oils including at least one diene elastomer, at least finely dispersed, precipitated silica and carbon as fillers, softeners, at least one silane coupling agent, and additional common additives as well as a process for their production. Additionally, the invention relates to rubber products and tires made based on such rubber compositions. The rubber composition can comprise 5 to 60 phr of at least one mineral oil softener as a softener, with a content of polycyclic aromatic compositions of less than 3 wt-% in relation to the total weight of the mineral oil softener, determined by the DMSO extract according to the IP 346 method, and a glass transition temperature below −45 ° C., and 1 to 20 phr of at least one glyceride and/or of a factice, and the weight ratio of finely dispersed, precipitated silica to carbon black being 1:2 to 20:1 in the rubber composition.

Abstract: The invention relates to a method for determining the spacing or distance of two reference points which are movable between a lower spacing limit and an upper spacing limit. The method is especially for determining the spacing of a vehicle body of a motor vehicle relative to a fixed reference point. The spacings are determined with the aid of a sensor and this sensor is attached as close as possible to a defined position. Thereafter, an offset is determined from the signal, which is indicated by the sensor, and from the signal, which a sensor would indicate if located in the defined position. For the spacing measurement, this offset is added to the signal, which is indicated by the sensor, and the spacing of the two reference points is determined from the summation signal which results in this way. With the method, it is achieved that an imprecisely installed sensor can be calibrated to a precisely installed sensor.

Abstract: A pneumatic tire is provided that has a way to provide information. The pneumatic tire has at least at one predetermined location a rubber mixture that is permeated with magnetizable particles that are magnetized in a number of first zones and differently or not at all in a number of second zones. The tire can be used in a slip regulation system, and apparatus for producing such a tire are also provided.

Abstract: The invention relates to a level control arrangement for vehicles having air springs (6a) to (6d) and a pneumatically controllable directional valve (26). A residual pressure holding function and an overpressure function are integrated into the directional valve (26). The directional valve (26) is controlled by the air pressure in the air springs (6a) to (6d). The air pressure can be applied via a control line (20) to a control input (24) of the directional valve (26). The air from the air springs (6a) to (6d) is released with the aid of the venting line (28). The venting line (28) is guided separately from the control line (20) through the directional valve (26). In this way, a large air flow can be conducted through the venting line (28) without the static air pressure in the control space (50) of the directional valve (26) being reduced. The venting line is blocked by a stepped piston (44) of the directional valve when no air is to be released from the air springs.

Abstract: A vehicle wheel with a one-piece rim and tubeless pneumatic tire comprises an emergency rolling surface on a radially exterior shell of the rim, an elastic bead, and a one-piece toroidal chamber at each axial front end of the rim. Each chamber includes a closed radially interior chamber wall, a closed radially exterior chamber wall, a closed axially interior chamber wall, and an axially exterior chamber wall axially closed in a radially exterior area defining a radially inwardly directed flange and open in a radially interior area. A filler ring is radially secured in each chamber on the radially interior chamber wall. Each side wall of the tire extends inwardly from the axially exterior wall through the opening, and the head is embedded in the chamber such that the bead lies across the axial extent of the filler ring, the head and the filler ring completely filling the chamber.

Abstract: Bearing for damping or decoupling vibrations between adjacent components. The bearing includes a spring body having face ends, a connection part coupled to at least one of the face ends, and a frictional damper coupled in a parallel manner with the spring body. The frictional damper is at least one of electrically and electronically regulatable.

Abstract: A pneumatic vehicle tire includes a carcass, a bead with a bead core arranged in the bead, and a first sensor located within the bead. The first sensor delivers signals which are correlated to frictional forces transmitted by the pneumatic vehicle tire during operation. This sensor has a first end and a second end, wherein the first end includes a heel attached to the bead core and the second end extends radially outward from the bead core within the tire. A plurality of such sensors can be included in each tire, some for measuring longitudinal forces in a circumferential direction of the tire and others for measuring lateral forces in an axial direction of the tire.

Abstract: A compressed air landing strut 2 is disclosed with a pneumatic shock absorber which is set onto a spring support 14. The spring support 14 has an offset 22 and the end region 24 of the roll-off piston 12 is flared radially outward, so that it surrounds the offset 22. An O-ring 24 is radially compressed between the outer wall 40 of the spring support 14 and the inner wall 42 of the roll-off piston 12 and seals the spring space 4 of the pneumatic shock absorber air-tight against the environment. A method for the manufacture of said pneumatic shock absorber is also disclosed.

Abstract: The invention relates to a process for manufacturing an unfinished rubber piece for a vehicle tire that includes providing a plurality of tire components composed of unvulcanized rubber mixtures, and treating a surface of at least one of the plurality of tire components with a plasma and/or a flame to increase the adhesiveness of the surface. The unvulcanized rubber mixtures may include partially embedded reinforcing members.

Abstract: Level adjustment device for vehicles with air springs 8a through 8d, by which a vehicle body is furnished with suspension on at least one vehicle axle, which includes the following: a source of compressed air 2, which, for the purpose of filling air springs 8a through 8d, can be connected to air springs 8a through 8d via an air dryer 4, the air dryer 4, for the purpose of filling the air springs, is connected on one side to air springs 8a through 8d through a check valve 6 that is open to air springs 8a through 8d, each air spring 8a through 8d, for the purpose of emptying them, can be connected through the air dryer 4 and through a pneumatically controlled first distribution valve 10 to the atmosphere, wherein the pneumatic control input 38 of this distribution valve 10 is then impinged through a second controllable distribution valve 12 with the pressure in air springs 8a through 8d against a restoring force 50 acting on the pneumatic control input 38, the pneumatic control input 38 of the pneumatically co

Abstract: Motor vehicle wheel including a wheel rim and a tire having a tire interior enclosed by the wheel rim and the tire. The tire is mounted on the wheel rim, and the wheel also includes an insert composed of a ring-shaped sound-absorbing material that is positioned within the tire interior. The wheel further includes an acoustically transparent support element having tensile strength, at least in a circumferential direction of the tire, that is coupled to the insert.

Abstract: A fail-safe system 2, in which the position of an actuating device 4 is measured by three sensors 8, 10 and 12 that operate independently of one another. The sensor 8 is directly supplied with energy by a first energy source 20, and the sensor 12 is directly supplied with energy by the second energy source 22 of the system 2. The sensor 10 is supplied with energy by the first energy source 20 or by the second energy source 22 via a diode circuit 14, 16 such that, if one of the energy sources 20 or 22 fails, two of the three sensors 8, 10 and 12 are still supplied with energy. A majority decision can be carried out in the microprocessors 32 or 34 if the signal of one sensor is lacking, wherein it can also be determined which of the energy sources 20 or 22 has failed.

Abstract: Motor vehicle wheel including a wheel rim and a tire having a tire interior enclosed by the wheel rim and the tire. The tire is mounted on the wheel rim, and the wheel also includes an insert composed of a ring-shaped sound-absorbing material that is positioned within the tire interior. The wheel further includes an acoustically transparent support element having tensile strength, at least in a circumferential direction of the tire, that is coupled to the insert.