Abstract: The invention relates to a sulfur-crosslinkable rubber mixture, especially for the sidewall of pneumatic vehicle tires, and to a pneumatic vehicle tire whose sidewall consists at least partly of the sulfur-crosslinked rubber mixture. For reduced hysteresis, hence leading to low rolling resistance when used as a sidewall mixture, the rubber mixture comprises 20 to 80 phr of natural rubber and/or synthetic polyisoprene, 20 to 80 phr of at least one polybutadiene functionalized for attachment to silica and 20 to 50 phr of at least one silica with a CTAB surface area (to ASTM D 3765) of 50 to 130 m2/g and a nitrogen surface area (BET surface area) (to DIN ISO 9277 and DIN 66132) of 60 to 140 m2/g.

Abstract: A pneumatic vehicle tyre of radial type of construction, having a tread (1), having a carcass inlay (3), having electrically non-conductive sidewalls (7) and having at least one electrically conductive component (8) or element in a bead region, which component or element, in the case of a tyre mounted on a wheel rim, comes into contact with said wheel rim, wherein either the tread (1) is electrically conductive or, in the tread region, at least one electrically conductive component (10) is provided which is overlapped on the outside by the sidewalls (7) and which is connected in electrically conductive fashion to the tread outer surface, and wherein filaments provided with an electrically conductive coating are incorporated at least in a sidewall region, the coating of which filaments forms electrically conductive passages between the tread (1) or the component (10) and the at least one electrically conductive component (8) or element in the bead region.

Abstract: A holder is for arranging a foil on the mold surface of a sidewall shell of a vulcanizing mold. The holder has a sleeve which can be pressed into a bore in the sidewall shell and, arranged in the sleeve, a helically-spring-mounted, coaxially movable pin. The pin has a pin head which, in an initial position, projects beyond an end of the sleeve with the force of the spring and on which a foil can be positioned on the mold surface. The pin, in an end position, is movable into the sleeve counter to the force of the spring such that the pin head end remote from the pin is aligned with the end of the sleeve. The pin head forms a clearance fit with the sleeve. The clearance fit is such that the pin is movable in the sleeve but no rubber material can ingress into the sleeve.

Abstract: The invention relates to a pneumatic vehicle tire of a radial type of construction with a carcass (1) and a carcass turn-up (1a), wherein the carcass (1) and also the sidewall (5) consist of rubber compounds that are insufficiently electrically conductive, while the bead strip (7) consists of a rubber compound that is electrically conductive, and wherein at least the outer surface of the carcass (1) has electrically conductive, filament- or strip-shaped elements (12), which in the carcass turn-up (1a) lie radially on the inside. The invention is distinguished by the fact that an additional, electrically conductive component (9), which establishes a path of electrical conduction either from the one outer surface of the carcass (1) or from the inner surface of the carcass turn-up (1a) to the outer surface of the carcass turn-up (1a), is arranged on the end of the carcass turn-up (10).

Abstract: A pneumatic vehicle tire of a radial type of construction with a profiled tread (1), sidewalls (3), bead regions (2) and an airtight inner layer (4), which forms the inner side (4a) facing the interior space of the pneumatic vehicle tire, ribs (6) being formed on the inner layer (4), having been imprinted in it by a heating bladder introduced into the interior of the tire during the vulcanizing of the pneumatic vehicle tire in a tire heating mold, and a sound absorber (5) being provided so as to extend in an annular manner on a circumferential region (4b) of the inner side (4a) opposite from the tread (1). Grooves (7) have been formed by the heating bladder at least in a partial region of the circumferential region (4b) of the inner layer (4a) on which the sound absorber (5) is provided.

Abstract: A cord (1) for use in an elastomer product, preferably in a pneumatic tire, comprising a reinforcement system (2) which is made of an electrically nonconductive material and which is sheathed by an electrically conductive layer (5). Located on the electrically conductive layer (5), covering same, there is a further, electrically insulating layer (6).

Abstract: The invention relates to a self-sealing pneumatic vehicle tire having a belt package (2), a tread (1) arranged radially above the belt package (2) and an airtight inner layer (4) arranged radially on the inside, wherein the self-sealing of the pneumatic vehicle tire is obtained via a sealant layer (5) subsequently applied radially on the inside after the vulcanization of the pneumatic vehicle tire, wherein the sealant layer (5) has essentially the width of the belt package (2) and is arranged essentially in the projection thereof and has a cross section which is formed in a cross-sectional plane including the tire axis and has a surface (5a) running essentially parallel to the belt package in axial direction and a surface (5b) running essentially in radial direction.

Abstract: A pneumatic vehicle tire has a carcass with at least one carcass ply. The surface of the carcass ply has an overlay made of an electrically conductive rubber mixture. The overlay extends continuously from an electrically conductive bead base to a superstructure and contacts the superstructure. A method for making a pneumatic vehicle tire includes the steps of making a carcass ply, covering a surface of the carcass ply with a continuous overlay made of an electrically conductive rubber mixture. The overlay contacts an electrically conductive bead base and the superstructure in the finished pneumatic vehicle tire.

Abstract: A pneumatic vehicle tire (1) having a profiled tread (2) that merges at either side into sidewalls (3), the end of which is formed by a tire bead (5, 6) insertable in an airtight manner into a wheel rim (7) of a vehicle wheel (8), wherein an absorber (10) has been integrated into the pneumatic vehicle tire (1) for sound absorption and the cohesive bond consists of an adhesion promoter (11) applied between the absorber (10) and the inner surface (9) of the pneumatic vehicle tire (1), has been further developed in accordance with the invention in that the inner surface (9) of the pneumatic vehicle tire (1) has mutually alternating adhesion promoter sections (12) and adhesion promoter-free sections (13), the adhesion promoter-free sections (13) having been coated with a separating agent (14).

Abstract: The invention relates to a pneumatic vehicle tire (1) having a profiled tread (2) that merges at either side into sidewalls (3, 4), the end of which is formed by a tire bead (5, 6) insertable in an airtight manner into a wheel rim (7) of a vehicle wheel (8), wherein an absorber (10) cohesively bonded to the inner surface (9) of the pneumatic vehicle tire (1) has been integrated into the pneumatic vehicle tire (1) for sound absorption and the cohesive bonding consists of a bonding agent (11) in an arrangement where it is not distributed over the full area between the absorber (10) and the inner surface (9) of the pneumatic vehicle tire (1).