Abstract: A method for making a silicic acid containing rubber base composition includes providing composition ingredients of rubber, silicic acid, silane and additional additives except for vulcanization ingredients. First and second mixers separate from each other are provided wherein the ingredients except for the vulcanization ingredients can be mixed. All of the composition ingredients are introduced into the first mixer except for the vulcanization ingredients simultaneously or at time intervals. The composition ingredients introduced into the first mixer are mixed to a composition. The composition formed in the first mixer is transferred directly into the second mixer without an intermediate storage thereof. The transferred composition formed in the first mixer is mixed at least almost to completion in the second mixer with the temperature lying in the temperature range of 130° C. to 180° C.

Abstract: The invention relates to a level adjusting system for motor vehicles, with a compressed air reservoir (26) and a tire inflation connector (28), in which a spare wheel can be connected. The spare wheel can be inflated from the compressed air reservoir (26) with the aid of the controllable distribution valve (36), the pneumatically controllable distribution valve (18), which bridges the non-return valve (10), the air dryer (6) and the pneumatically controllable valve (20) which also connects the compressed air line (22). The spare wheel may also be inflated with the aid of the compressor (2) and the pneumatically controllable distribution valve (20). During the inflation process the compressed air line (22) is closed with the aid of the controllable distribution valve (24) so that no compressed air escapes into the atmosphere.

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: In a composite of vulcanizable rubber or rubber-like composition with one or more metal reinforcement elements embedded therein, the metal reinforcement element is coated with a polymer or non-cured rubber composition compatible with and co-polymerizable, co-vulcanizable or crosslinkable with said vulcanizable ruber composition to be reinforced, and additionally bearing functional groups either covalently bonding to the metal surface of said reinforcement element or forming covalent bonds with the outward directed first functional groups of a mono- or multimolecular layer of a bifunctional adhesion promoter intercalated between said metal and said coating and bound to said metal by its second functional groups. A cured rubber or rubber-like product, for instance a pneumatic tire, is obtained by vulcanization of such a composite.

Abstract: The invention relates to a method for detecting a drop in pressure of a motor vehicle tire by evaluating wheel speeds determined by sensors. The method for detecting the drop in pressure is based on the detection of a large drop in pressure or a complete drop in pressure using a reduction of the angular velocity or an increase (8) in the dynamic read radius rd of one or more wheels. The invention also relates to a device for controlling the braking power and/or driving dynamics and for measuring the pressure of vehicle tires wherein a microcomputer, which is connected to wheel rotational speed sensors and optionally to driving dynamic sensors, is used to perform the aforementioned method and a known method for regulating the braking power and/or driving dynamics.

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: Belt bandage for a vehicle pneumatic tire that includes a ply having strength carriers embedded in an unvulcanized rubber mixture. The strength carriers run essentially parallel to one another. Each strength carrier includes a hybrid cord that has a first twisted yarn having a high modulus of elasticity of at least approximately 25000 N/mm2 and a second twisted yarn having a low modulus of elasticity which is no greater than approximately 15000 N/mm2. The first and second twisted yarns are final-twisted together.

Abstract: Vehicle tire having a tread rubber profile which includes grooves running in a circumferential direction, diagonal grooves, two shoulder block rows and a pair of center block rows arranged between the two shoulder block rows. Each of the two shoulder block rows and each of the pair of center block rows include blocks. Each of the blocks include a plurality of fine indents running generally parallel to one another. The tread rubber profile has a road contact area defined by a width Y and a center profile area defined by a width X, whereby the width Y at least partially encompasses the two shoulder block rows and whereby the width X is generally defined by axial outer edges of the pair of center block rows. A ratio of the width Y to the width X is between approximately 1−(DR−100)×1.5 and approximately 1−(DR−100)×5, whereby DR represents a diameter of a rim to which the vehicle tire can be connected.

Abstract: A spike for the running surface of a motor vehicle tire, especially a snow tire, with, as seen from above, an out-of-round, elongated, plate-like spike root (2, 2a), the greatest extension of which defines a longitudinal axis (7a), and an out-of-round, elongated upper part (4, 5) of the spike, the greatest extension of which defines a longitudinal axis (6a). In order to be enabled to accept even greater forces from below, the spike root (2, 2a) and the upper part (4, 5) of the spike are twisted in relation to each other, so that the longitudinal axis (6a) of the upper part (4, 5) of the spike encloses an angle (15, 15a) varying from zero with the longitudinal axis (7a) of the spike root (2,2a).

Abstract: The invention is directed to a method for making a pressure-tight attachment of an elastomeric tubular piece to an attachment part. For making the pressure-tight attachment, an open end of a tubular piece made of elastomeric material is pushed onto a connecting part and a metal clamping ring is positioned thereon. While radially pressing the jaws of the clamping device together, the diameter of the clamping ring is reduced and the tubular piece is thereby tightly clamped to the connecting part. The clamping operation is ended before damage occurs but only when an adequate strength is ensured. During clamping, the force/displacement curve is observed and a characteristic feature of the measured curve is used as a basis of computation for a switchoff criterion. Preferably, the clamping operation is only ended when the clamping force begins to drop for the first time after the maximum force is exceeded in a defined manner in a predetermined localized or bounded curve segment.

Abstract: Arrangement and method of building vehicle pneumatic tires. The arrangement has a first production line including a carcass building drum device, a shaping drum device, and a moveable core-centering and carcass-carrying device arranged between the carcass building drum device and the shaping drum device. The moveable core-centering and carcass-carrying device is adapted to receive a carcass from the carcass building drum device and to transfer the carcass the shaping drum device. A second production line includes a movable belt building drum device adapted to build a belt package with at least one belt layer. The movable belt building drum device is adapted to move across the first production line and between the carcass building drum device and the shaping drum device. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

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: The invention relates to a flexible hose line, in particular, a high-pressure hose line which is subjected to a pressurized forming process, preferably for variable levels of pressure. Said flexible hose line consists of several layers, at least one of which is configured as a reinforcing layer. The hose line is characterised by an inner layer (1) with a profile which can be elastically stressed in at least the longitudinal direction of the hose. Said inner layer is the only layer whose length can be modified.

Abstract: Pneumatic tire, particularly a two-wheeler pneumatic tire, such as a bicycle tire, which includes at least one rubberized casing that is anchored in beads by wrapping bead cores. A tread is provided. An outer covering has a layer thickness of less than or equal to 0.5 mm. The outer covering has a high tear resistance and extends at least over the tread.

Abstract: Vehicle tire includes a tread having a circumference, profile structures, and grooves. The grooves run at least one of generally diagonally into a central area of the tread and generally diagonally over a central area of the tread. The grooves and the profile structures form base pitches. The base pitches are arranged over the circumference and have a pitch sequence which minimized tire noise. At least two of the base pitches have different circumferential lengths. One of the at least two base pitches includes at least one profile structure. Another of the at least two base pitches includes at least two profile structures separated by at least one cross-groove. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: A level control system for a motor vehicle having a vehicle body includes a plurality of air springs which can be filled or discharged with pressurized air to control the level of the vehicle body. A first control apparatus controls the functions of filling and discharging the air springs in dependence upon the level of the vehicle body. A communications channel interconnects the first control apparatus to a second control apparatus. A switch triggers an additional function in the level control system and this switch is movable between a first switching state and a second switching state. The switch is connected to the second control apparatus and the second control apparatus functions to transmit a signal sequence via the communications channel to the first control apparatus when the switch is transferred from the first switching state into the second switching state. The first control apparatus operates to carry out the additional function when the first control apparatus receives the signal sequence.

Abstract: An air spring includes a flexible member, which encloses an air volume, and two connecting parts. Each of the connecting parts has a clamp seat on which an end of the flexible member is attached with the aid of a clamp ring assigned to the clamp seat. The surface of at least one clamp seat is at least approximately convex and the total inner side of the clamp ring, which is assigned to the clamp seat, is configured to be at least approximately concave.

Abstract: A method detects leakages in a motor vehicle air spring system which includes a plurality of air springs and has a level control arrangement. The level control arrangement includes: an electronic control apparatus; a plurality of elevation determination sensors associated with corresponding ones of the air springs; a pressure sensor; a plurality of air spring valves corresponding to respective ones of the air springs and a compressor. The elevation determination sensors and the pressure sensor are connected to the control apparatus for supplying signals thereto. The control apparatus functions to process the signals for controlling the air spring valves and the compressor for controlling the motor vehicle upwardly or downwardly in elevation.

Abstract: An air spring includes a flexible member which, on the one hand, is attached to a housing and, on the other hand, to a roll-off piston and which encloses an air volume. The surface of the housing, which faces toward the air volume of the air spring, is charged with the air pressure of the air volume; and, the air spring can be connected to the chassis of a motor vehicle with the interposition of an elastic bearing. The housing includes at least two parts of which a first part serves as the connection of the air spring to the chassis of a motor vehicle and a second part serves as the attachment of the flexible member; and, the elastic bearing is configured to have an annular shape and is mounted between the two parts of the housing.