Abstract:
A pneumatic tyre including a tread portion, wherein the tread portion has a groove which is oriented at an angle between +45 and −45 degrees with respect to the rolling direction of the tyre, the groove having a depth extending in the radial dimension, wherein the groove includes a plurality of protrusions extending along the direction of the groove, wherein each protrusion has a length in the direction of the groove, a width perpendicular to its length and a height. Each protrusion has a length of at least 75% of the circumferential length of the tyre tread.
Abstract:
A front spoiler assembly for a motor vehicle. The front spoiler assembly includes a spoiler lip which is arranged to extend at least partially in a transverse direction of the motor vehicle in a front area of the motor vehicle. The spoiler lip includes a front side, a spoiler lip outer edge which faces away from a front part of the motor vehicle, and at least two spoiler areas. At least one actuator device moves the at least two spoiler areas either separately or together from a retracted rest position to an extended spoiler position. The at least two spoiler areas are separated from each other at the front side of the spoiler lip by at least one depression form which extends into the spoiler lip outer edge.
Abstract:
A front spoiler assembly for a motor vehicle. The front spoiler assembly includes a spoiler lip which is arranged to extend at least partially in a transverse direction of the motor vehicle in a front area of the motor vehicle. The spoiler lip includes a front side, a spoiler lip outer edge which faces away from a front part of the motor vehicle, and at least two spoiler areas. At least one actuator device moves the at least two spoiler areas either separately or together from a retracted rest position to an extended spoiler position. The at least two spoiler areas are separated from each other at the front side of the spoiler lip by at least one depression form which extends into the spoiler lip outer edge.
Abstract:
The present invention relates to a cross-linkable rubber composition, a cross-linked rubber composition obtained by cross-linking such a rubber composition, a method of preparing a tyre and a tyre. A cross-linkable rubber composition comprises, per hundred parts by weight of rubber (phr): ≧1 phr to ≦99 phr of a styrene-butadiene rubber (SBR) component; ≧1 phr to ≦99 phr of a polybutadiene rubber (BR) component; ≧5 phr to ≦35 phr of a polyterpene resin component; The polybutadiene rubber has a branching index G of ≧0.7 to ≦0.85 and a polydispersity index Mw/Mn of ≧3.5 and ≦4.5 and the polyterpene resin has a molecular weight Mw of ≧900 to ≦1200.
Abstract:
The invention related to a method of manufacturing an elastomeric product, e.g. rubber products, with a low hysteresis. The method comprises at least the steps of providing an elastomeric material composition which comprises an elastomeric material, sulfur and a peroxide and vulcanizing the blend at a selected reaction temperature that is higher than the temperature at which cross-links are formed in the composition, and that is between the temperature at which the half-life time of the peroxide is 1 hour and 50° C. above the temperature at which the half-life time of the peroxide is 1 hour. The composition shows a low level of hysteresis in combination with good (tear) strength, in particular at low temperatures.
Abstract:
The present invention relates to a method for chemically adhering a diene rubber to a piezoelectric polymer, the method comprising the steps of: a) providing a piezoelectric polymer having at least one surface, b) providing a rubber component having at least one surface and comprising a sulfur cross-linkable rubber composition, c) introducing oxygen-containing functional groups on the at least one surface of the piezoelectric polymer, d) reacting the oxygen-containing functional groups with a compound comprising thiocyanate groups, and e) contacting the surface of the piezoelectric polymer obtained of step d) with the surface of the rubber component, and cross-linking.
Abstract:
A cross-linkable rubber composition may include, per hundred parts by weight of rubber (phr): 100 phr of a blend of a natural rubber (NR), a polybutadiene rubber (BR), and first and second solution polymerized styrene-butadiene rubbers (SSBR); a silica filler, a resin, and ≥1 phr to ≤20 phr of first and second coupling agents, wherein the first coupling agent is a mercaptosilane and the second coupling agent is selected from a disulfide silane, a tetrasulfide silane, or a combination thereof.
Abstract:
FIG. 1 is a front elevation view of a tire showing our new design, the rear elevation view being identical thereto; FIG. 2 is a right side elevation view thereof; FIG. 3 is a left side elevation view thereof; FIG. 4 is a front, right perspective view thereof; and, FIG. 5 is an enlarged partial front elevation view thereof. The short-dash broken line showing is for the purpose of illustrating unclaimed portions of the tire and forms no part of the claimed design.