Abstract: A vehicle wheel and pneumatic tire arrangement. The tire has a radial carcass anchored in the tire beads, a tread strip, respective shoulder-like extensions which are each formed by a step, are disposed on each side of the tread strip, and do not come into contact with the roadway under normal driving conditions, and a belt which extends laterally to within the vicinity of each step extension to such an extent that a given one of the belt portions which is disposed within the vicinity of a given step extension has a width equal to approximately 25-40% of the amount by which the widest part of the tire extends beyond the end of the tread strip at that given step extension. To achieve a low rolling resistance and at the same time a great travel comfort, the beads of the tire are disposed axially inwardly on the rim to such an extent that the beads are disposed completely axially inwardly of the step extensions.

Abstract: A vehicle wheel has a pneumatic tire mounted thereon. The wheel has a rigid rim having essentially radially inwardly extending rim flanges and, on the radially inner side of the rim ring, the rim has respective mounting spaces, each with a deep mounting bed. The pneumatic tire is provided with tire beads having a cross-sectional form which, on the one hand, permits the tire bead to extend into the mounting space and deep bed during mounting, in which, on the other hand, closes-off the mounting space and deep bed when the tire is in its operational state. In order to disconnect the tire seat from the rim support surfaces, it is proposed that the deep mounting bed extend directly to the rim flange, and that, in the operational state of the tire, on the one hand the tire bead be spaced from that portion of the rim ring that is adjacent to the rim flange, and on the other hand a portion of the tire bead butt axially inwardly against a portion of the rim.

Abstract: A belt conveyer system where along various sections great differences in height must be overcome. A conveyer belt that is initially spread flat is guided in steeply inclined stretches to form a closed hose. To satisfactorily transport, without loss, even difficult-to-handle, fine-particled material, the transition from a steep section into a horizontal section, or even to a discharge station, the steadily opening cross-sectional area is a critical process. To avoid the danger of disruption, a cover belt is provided that extends over the transition zone. The lower run of this cover belt extends into the opening hose cross-section of the conveyer belt, rests directly upon the transported material, and is supported on both sides on the edges of the conveyer belt.

Abstract: A flexible diaphragm-like element that serves as a partition between the two chambers of a damping mechanism of a resilient motor mount. These chambers are filled with damping fluid, and their volume can be varied as a function of the springing movements of the resilient mounting elements, with the damping action deriving from the throttled transfer of the fluid from one chamber into the other. To prevent noise from being produced, the diaphragm-like element is secured in such a way that it has freedom of movement. This freedom of movement is set in the diaphragm-like element itself by dividing the latter into three concentrically disposed and interconnected ringshaped zones, namely a radially inner zone, a central zone, and a radially outer zone, with the thickness of the central zone being considerably less than the thickness of the inner and outer zones.

Abstract: A hose belt conveyer system is proposed in which the material that is to be conveyed is transported by a conveyer belt that can be closed to form a hose belt. The support rollers are arranged in the form of roller garlands, which results in a flexible adaptation to the belt volume, as well as advantages during assembly and repair and maintenance of the system. The significant positioning of the roller garlands and their rollers effects a low-wear and energy-saving operation of the system.

Abstract: A rolling bellows for pneumatic cushioning or shock absorption of a vehicle. Such rolling bellows are stressed particularly severely during telescoping in the pressureless state during assembly and also under emergency condititions. In order to avoid the occurrence of tension cracks from such causes, the rolling bellows are provided in the region of the cylindrical curvature, and on the inner surface, with integrally formed-on raised surface portions.

Abstract: A rolling-type bellows for vehicular pneumatic cushioning systems. In the installed state, support surfaces of the bellows that are adjacent to the end beads thereof are supported against vehicle parts that are movable relative to one another; the axial width of the support surfaces can vary. In the region of the annular support surfaces, the bellows are provided with raised interval axial ribs, which enhance the buckle-free continuous movement of the rolling folds, and reduces wear of the walls of the bellows.

Abstract: The build-up drum of build-up machines is frequently interchangeably mounted on its drive shaft in order to be able to adapt to changes in dimension in the production program with one and the same machine. If the operating and control elements associated with the drum bear directly against the end walls of the drum, each change of the drum requires considerable expense for adjustments and alignments. This is avoided by providing the build-up drum on both sides with a respective spacer and abutment sleeve against which the movable operating and control elements can bear in a constantly uniform orientation relative to the middle of the drum as the critical reference plane.

Abstract: To convey corrosive liquids, rubber hoses are customarily provided with an inner lining that is made of a synthetic material which is resistant to solvent. In order to achieve the previously unobtainable smooth, fold-free application of the thin plastic foil against the inner rubber layer of a hose, the present invention utilizes an extremely thin-walled contractible foil sleeve that is smoothly contracted upon a rigid fabrication mandrel. This foil sleeve then forms the base for the further build-up of the hose.

Abstract: A method and apparatus for mounting pneumatic vehicle tires, the beads of which have pull and compression resistant bead cores, with the beads, in the mounted state of the tire, being disposed on the radially inner periphery of a wheel rim next to the essentially radially inwardly extending rim flanges of the latter. A mounting mechanism is brought into contact with the peripheral region of a tire bead portion that has been introduced into the rim. The mounting mechanism is introduced in such a way that a first section of the mounting mechanism rests against the tire axially outwardly of the rim flange, while a second section of the mounting mechanism rests against the tire at the level of the rim flange and/or axially inwardly of the rim flange. These two sections of the mounting mechanism define an angle of 80.degree. to 120.degree. relative to one another. While the introduced tire bead portion is held in place against the rim, the mounting mechanism is guided along the periphery of the tire.

Abstract: A resilient mounting for engines, machine units, etc. During driving operation, resilient motor mounts having a supporting diaphragm-like element which oscillates freely via an air cushion generate undesirable and annoying noises, and they also transmit to the chassis and the body, in a practically undamped fashion, low-frequency oscillations. The present invention therefore provides an effective acoustic uncoupling, without adversely affecting the spring or shock absorption characteristic, via a damping device in the form of a flexible diaphragm which is provided with a throttled transfer hole. This diaphragm is attached between the air cushion and a supplemental space which receives compressed air, the pressure of which can be regulated.

Abstract: A profiled rubber strip seal for bordering window and door openings. To simplify installation, or to promote relative movement between the strip and windowpanes, such seals are provided with overlay strips of friction-reducing material, especially synthetic materials that contain fluorine. To provide favorable conditions for satisfactory bonding between the overlay strips and the main strip, and also to make it possible to use difficult to handle materials, the elastomeric mixture of the main strip is altered by including therein silicic acid.

Abstract: Method and apparatus for producing sealing strips and similar profiled strips of rubber and rubber-like elastomers. Rubber-like profiled sealing strips for window or door openings are frequently provided with overlay strips to facilitate installation, to enhance the relative movements, or for aesthetic-visual reasons. The material of these overlay strips generally differs considerably from the material of the base main strip. The manufacture of such two-material profiles can be undertaken in a single extrusion step by joining and directly combining a prefabricated overlay strip with the main strip in the extrusion head of an extrusion press, where the shape is provided for the profiled strip. By stretching the overlay strip, the adhesion of the latter to the main strip is significantly improved.

Abstract: An unvulcanized tread strip for a pneumatic vehicle tire. The tread strip includes two or more superimposed layers. In order to improve the adhesion of these layers, adjacent layers of the tread strip are provided with a plurality of projections and corresponding recesses which positively intermesh with one another.

Abstract: A lubricant for a tire and wheel assembly to reduce friction between the inner wall of a tire and the rim or other parts of the vehicle wheel. The lubricant comprises 50 to 70% by weight of polyethylene glycol and/or polyglycol ether, 49 to 27% by weight aluminum bronze, and 1 to 3% by weight of a wetting agent.

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.

Abstract: A pneumatic vehicle tire which is provided with a belt and with tread rib sections which are separated from one another by respective circumferential grooves. One or more cord fabric plies are disposed in the vicinity of the circumferential grooves to reinforce the belt. The cord fabric plies essentially extend over the width of the groove, and preferably have a width which is slightly greater than the width of the grooves.

Abstract: A method of producing steel-wire-reinforced conveyer belts. The steel wires, which are conveyed at a uniform tension through the production apparatus, each have associated with them a respective hydraulic tensioning cylinder. The cylinders, which communicate with one another, are acted upon by a pulsating fluid pressure. In this way, varying movement resistances can be reduced, resulting in extensive uniformity of the tension state of all of the wires.

Abstract: An elastic motor mount having a closed-off hollow space which is formed within a housing. With the aid of a regulatable pressure pump, the hollow space can selectively be filled with a damping fluid from a tank disposed externally of the mounting. It is therefore possible to randomly affect the stiffness of the shock absorption and the damping properties, and to efficiently reduce undesirable vibrations which might occur without permanently adversely affecting the acoustical property.