Abstract:
Rim for a vehicle tire with an emergency surface, vehicle tire with tubeless pneumatic tire and emergency surface, and process of forming emergency surface. The rim includes a radially outer surface and an emergency running support surface formed on the radially outer surface. The emergency running support surface includes an annular layer of at least one of rubber, rubber-like material, and plastic. The annular layer is vulcanized onto the radially outer surface. The vehicle wheel includes a tubeless pneumatic tire, at least one rim comprising a radially outer surface, and an emergency running support surface formed on the radially outer surface. The emergency running support surface includes an annular layer of at least one of rubber, rubber-like material, and plastic. The annular layer is vulcanized onto a the radially outer surface. The process includes forming an annular layer on a load-bearing structure of the rim, in which the annular layer comprises one of rubber, rubber-like material, and plastic, and vulcanizing the annular layer on the load-bearing structure.
Abstract:
A reverse bead type tire includes a tread, two sidewalls extending from the tread and a bead formed on an adge of each of the sidewalls. Each bead has a bead wire embedded therein and has a contact face which seats on a substantially axially extending seat of a wheel rim. The bead further has a bearing surface seated on a substantially radially inwardly projecting flange which forms an extension of the seat. The bead is configured with surface discontinuities such that a surface area of actual contact of the bead on the seat is less than a surface area of the seat between the flange and a plane P perpendicular to the rotational axis of the wheel and tangent to an axially inside point of the bead wire. As a result, localized pressures at the area of actual contact are high so that tightness of the tire on the wheel is assured. On the other hand, such tightness produced by localized high pressures does not increase mounting difficulty of the tire on the wheel rim.
Abstract:
A combination of a pneumatic tire and a vehicle wheel. The wheel has a rigid rim provided with essentially radially inwardly extending rim flanges. The radially outer side of the rim has emergency operation support surfaces, and the radially inner side of the rim is provided with respective recessed mounting portions for the beads of the tire, which is made of rubber or rubber-like synthetic material and has a carcass that is anchored in the beads by being looped about pull and compression-resistant bead cores thereof. The beads are disposed on rim seating surfaces provided on the radially inner side of the rim next to the rim flanges. The height of the rim flanges and the configuration of the tire beads are coordinated with one another in such a way that when the tire is uninflated and not subjected to load, there is provided between a rim flange and an adjacent inner wall of the tire, at the level of the radially innermost point of the rim flange, a gap of 0.5 to 3 mm.
Abstract:
A rim for a pneumatic vehicle tire, the beads of which are adapted to be mounted on the radially inner periphery of the rim. The rim has a rim ring that is provided radially inwardly with seating surfaces for the tire beads. On the lateral edges, the rim ring has essentially radially inwardly extending rim flanges. Furthermore, the rim ring is provided radially outwardly with support surfaces for emergency operation when a puncture, flat tire, etc. is encountered. In order to increase the ability to operate with a flat tire, the wall of the rim ring, in the vicinity of each of the rim flanges, is bent radially outwardly, and is then bent back axially inwardly at a radial spacing relative to the remainder of the rim ring, so that two annular supports are formed for supporting a flat tire.
Abstract:
A vehicle wheel on which can be mounted a pneumatic tire, with the wheel being suitable for use during emergency operation of the tire. The tire is essentially made of rubber or rubber-like synthetic material, and has a carcass which is anchored in beads of the tire by being looped around bead cores. The inside of the tire is provided with an air-impermeable layer. The tire can also be reinforced with a belt. The wheel is provided with a rigid rim, including a rim ring, and with an emergency-operation element upon which the inner surface of the tire is supported during emergency operation of the latter. The emergency-operation element can be formed by the rim ring itself, or by a separate support element secured to the rim. In order to guarantee that emergency operation can be undertaken over a longer period of time without damaging the inner surface of the tire, at least one friction strip is disposed on the radially outer side of the emergency-operation element. This friction strip extends further radially outwardly than do any parts of the rim and emergency-operation element, so that during emergency operation of the tire, the latter is supported by the friction strip. Each friction strip is rotatably supported on the emergency-operation element.
Abstract:
A vehicle wheel, especially for a truck. The wheel has a rigid rim on which can be mounted a pneumatic tire of rubber or rubber-like material. The carcass of the tire is anchored in the tire beads by being looped around pull-resistant bead cores. The tire beads are disposed on the radially inner periphery of the rim ring. In order to make it particularly easy to mount the tire, the rim seating surfaces for each tire bead extend essentially horizontally in the transverse direction, and extend to the edge of the rim ring. A clamping ring is disposed radially inwardly of the tire bead, with that side of the clamping ring which rests against the bead extending at an angle to the axis of rotation of the wheel. The bead core has a cross-sectional shape which includes sides which extend essentially parallel to the clamping ring and parallel to the rim seating surface.
Abstract:
A vehicle wheel and pneumatic tire assembly, including a tire which essentially comprises rubber or rubber-like synthetic material, and a rigid rim which on the radially inner periphery of the rim ring has seating surfaces for the tire, from where the tire walls initially extend essentially horizontally toward the outside. On the radially inner periphery, the rim ring is provided with support surfaces for supporting the tire during an emergency operation. In order to be able to transmit increased forces during an emergency operation, the inner wall of the tire, in the region of the tread, and the radially outer portions of the rim, are provided with raised portions and recessed portions which predominantly extend in the transverse direction, and which are adapted to engage in one another during an emergency operation of the tire.