Abstract:
The invention relates to a vehicle tire comprising a tread portion and a package of reinforcement layers arranged underneath the tread portion. The tread portion comprises a tread base layer arranged underneath the tread layer, and at least one rubber member that extends in the radial direction of the tire from the ground contacting surface to the reinforcement package. The tread layer rubber composition has an electrical resistivity at room temperature of more than 108 ohm-cm, the tread base layer rubber composition of between 106 ohm-cm and 108 ohm-cm, the member rubber composition of less than 106 ohm-cm; and the rubber composition of at least one layer of the reinforcement package has a electrical resistivity at room temperature of less than 106 ohm-cm. The vehicle tire combines a low rolling resistance with improved conductivity to avoid build-up of static electricity.
Abstract:
A vehicle front spoiler comprises a flexible airflow guiding element provided in a region of a front part of the vehicle and extending in a transverse direction Y of the vehicle, and an actuating member, configured to move the airflow guiding element relative to said part of the vehicle between an extended operative position and a retracted inoperative position in which the airflow guiding element is folded rearwards to behind said vehicle part. The airflow guiding element is made of a rubber composition comprising an anisotropic textile structure of reinforcement cord having an elongation at break in the Y-direction of from 5% to 50%, and an elongation at break in the Z-direction lower than the elongation at break in the Y-direction, and is readily moved between the operative and the inoperative position with relatively low hysteresis losses.
Abstract:
The invention relates to a method for manufacturing a molded article from a first rubber polymer, which molded article comprises an insert from a second rubber polymer. The method comprises the steps of (A) providing an at least partially vulcanized article from the first rubber polymer, the article having a recess that extends in a depth direction and in transverse directions perpendicular to the depth direction, for accommodating the insert; (B) providing an at least partially vulcanized insert from the second rubber polymer, the insert having a shape such that it can be accommodated in the recess; (C) arranging an unvulcanized object from a third rubber polymer in the recess to partly fill the recess; (C) arranging the at least partly vulcanized insert in the recess to obtain an assembly; and (D) vulcanizing the assembly under pressure. The method yields a molded article having an optically sharp interface between the first rubber polymer and the insert.
Abstract:
1. Pneumatic tyre for vehicle wheels 2. Pneumatic tyre for vehicle wheels 1.1 : Front 1.2 : Left 1.3 : Right 1.4 : Perspective 1.5 : Perspective 1.6 : Enlarged 2.1 : Front 2.2 : Left 2.3 : Right 2.4 : Perspective 2.5 : Perspective 2.6 : Enlarged Broken lines in the drawings Figs. 1.1 and 2.1 are used for demarcation of the enlarged portions shown in Figs. 1.6 and 2.6, respectively, and are not part of the claim.
Abstract:
The present invention relates to a cross-linkable rubber composition, the cross-linkable rubber composition comprising a natural rubber (NR), a filler, and a resin. The resin is a terpolymer of ethylene, acrylic ester and maleic anhydride and is present in an amount ranging from ≥5 to ≤20 phr.
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.
Abstract:
A pneumatic tyre comprising an inner surface of the tyre, wherein a sound absorbing device component is connected to the inner surface of the tyre. The sound absorbing device component comprises a panel with a plurality of perforations and two sidewall sections, the sidewall sections being distinct from the panel, wherein the sidewall sections are connected to the inner surface of the tyre and arranged opposite of each other and wherein the panel is borne by the sidewall sections, thereby positioning the panel at a distance from the inner surface of the tyre and defining an inner volume enclosed by the panel, the sidewall sections and the inner surface. Furthermore, ≥95 area-% of all perforations which permit access to the inner volume are located on the panel.
Abstract:
The present invention relates to a cross-linkable rubber composition for body compounds of a tyre, the cross-linkable rubber composition comprising, based upon parts by weight per 100 parts by weight rubber (phr): ≥30 to ≤90 phr of a natural rubber or isoprene rubber or combination thereof, ≥10 to ≤25 phr of a syndiotactic 1, 2-polybutadiene, ≥3 to ≤10 phr of a resin, and a filler, wherein the ratio in phr (parts by weight per 100 parts by weight of rubber) of the syndiotactic 1, 2-polybutadiene to the resin is in the range of ≥1:1 to ≤7:1.
Abstract:
The present invention relates to a a cross-linkable rubber composition, the cross-linkable rubber composition comprising, based upon parts by weight per 100 parts by weight rubber (phr): ≥60 phr to ≤80 phr of a butadiene rubber, a syndiotactic 1,2-polybutadiene, coupling agent, a filler, and a resin, wherein the composition co?prises ≥10 phr to ≤20 phr of the sy?diotactic 1,2-polybutadiene, and wherein the composition comprises ≥1 phr to ≤20 phr of at least two coupling agents wherein one of the coupling agents is or comprises a mercapto based silane and wherein the ratio of the mercapto based silane to the second coupling agent is in the range of ≥2:1 to ≤:10:1.