Abstract:
The invention relates to the extrusion of tire components with a large change of gauge across their cross-sectional area. It is provided a method and an assembly for extruding such a tire component with an extruder feeding a flow channel with a downstream die opening, whereby a deflector is provided in the flow channel upstream the die opening such that a flow of rubber is slowed down in front of broad portions of the cross-sectional area of the downstream die, avoiding distortion or bending of the extruded tire component.
Abstract:
The invention relates to the extrusion of tire components with a large change of gauge across their cross-sectional area. It is provided a method and an assembly for extruding such a tire component with an extruder feeding a flow channel with a downstream die opening, whereby a deflector is provided in the flow channel upstream the die opening such that a flow of rubber is slowed down in front of broad portions of the cross-sectional area of the downstream die, avoiding distortion or bending of the extruded tire component.
Abstract:
The invention relates to the extrusion of tire components with a large change of gauge across their cross-sectional area. It is provided a method and an assembly for extruding such a tire component with an extruder feeding a flow channel with a downstream die opening, whereby a deflector is provided in the flow channel upstream the die opening such that a flow of rubber is slowed down in front of broad portions of the cross-sectional area of the downstream die, avoiding distortion or bending of the extruded tire component.
Abstract:
The invention relates to the extrusion of tire components with a large change of gauge across their cross-sectional area. It is provided a method and an assembly for extruding such a tire component with an extruder feeding a flow channel with a downstream die opening, whereby a deflector is provided in the flow channel upstream the die opening such that a flow of rubber is slowed down in front of broad portions of the cross-sectional area of the downstream die, avoiding distortion or bending of the extruded tire component.
Abstract:
The invention relates to a rubber tire, and its preparation, composed of carbon black reinforced rubber carcass with an outer, circumferential rubber tread construction of a rubber composition having a relatively high electrical resistivity. The tire tread construction has an electrically conductive filamentary thread stitched through the tread construction and extending between the inner surface of the tread to its outer surface. An electrically conductive path is thereby created through the tire tread.
Abstract:
A pneumatic tire having a tire tread, the tread comprising grooves therein, the grooves forming tread elements, the tread having a radially outer surface and a non-skid tread depth as measured from the radially outer surface of the tread, and a radially innermost surface of the grooves, and one or more sunken grooves located radially inward and below the surface of the unworn tread, the tread comprised of a base tread compound, a radially outer compound, and a radially inner compound, wherein the intersection of the radially outer compound and the radially inner compound is wavy.
Abstract:
This invention relates to a pneumatic rubber tire which contains at least one electrically conductive cord extending from an external outer surface of its wheel-rim mounting surface rubber component to an internal electrically conductive tread base layer rubber component to provide a path of least electrical resistance, namely an electrically conductive path, between the outer tire wheel-rim mounting surface and the internal tire tread base layer. The electrically conductive cord is comprised of at least one electrically conductive metal filament (e.g. metal filament, carbon fiber or combination of metal filament and carbon fiber) spirally wound around a centrally disposed core of at least one organic fiber.
Abstract:
This invention relates to the preparation of a multi-layered rubber composite, said composite and a tire having a component prepared thereby. The multi-layered rubber composite is composed of at least two individual rubber compositions configured as at least three parallel aligned alternating rubber layers, wherein each rubber layer extends through the rubber composite thickness from one side to the other opposing side. The multi-layered rubber composite is prepared by co-extruding at least two individual rubber compositions, via an individual extruder for each rubber composition, to an internal cavity of a former. Said former is comprised of an internal cavity which contains a sequence of flow deflectors and channels for guiding the at least two individual rubber compositions to form said multi-layered rubber composite in a single manufacturing step.
Abstract:
A tire assembly (200) having runflat capability comprises a tire (202) mounted to a rim (203) to provide a tire cavity (204) defined by a carcass circumferential inner surface (246), two sidewall inner surfaces (248A,248B) and the rim. The tire assembly (200) is characterized by having a platform (206) disposed circumferentially around the rim within the tire cavity and one or more hoops (208A-208C) disposed within the tire cavity (204) between the platform (206) and the carcass circumferential inner surface (246) so that under normal inflation the one or more hoops do not contact either the carcass circumferential inner surface (246) or the sidewall inner surfaces (248A,248B), but below a first runflat inflation pressure, the one or more hoops (208A-208C) contact and support the carcass circumferential inner surface (246).
Abstract:
A tire has an axis of rotation. The tire includes two sidewalls extending radially outward and a tread disposed radially outward of the two sidewalls and interconnecting the two sidewalls. The tread includes a main portion comprising a first compound and a reinforcing structure comprising a second compound having reinforcing short fibers oriented between −20 degrees to +20 degrees to a circumferential direction of the tread. The main portion of the tread includes at least one circumferential groove separating circumferential ribs. Each circumferential groove has two sides and a base therebetween. The reinforcing structure includes a layer of the second compound secured to the sides of each circumferential groove.