Abstract: In a method for placing the required length of a tread strip onto a belt building drum tread strip portions are prepared by cutting from a continuous tread strip supply. The tread strip portions are collected in a storage device. The tread strip portions are sequentially fed to a belt building drum such that in a direction of feeding to the rear edge of a leading strip the leading edge of the next tread strip portion is spliced and a quasi-continuous tread strip band is formed. The circumference of the belt building drum is determined in order to determine the required tread strip length. The quasi-continuous tread strip band is cut to the required length of the tread strip so as to match the circumference of the belt building drum.

Abstract: A method and apparatus for checking the concentricity of a pneumatic vehicle tire that during operation has its bead regions mounted on the radially inner periphery of a wheel rim. The apparatus includes a two-part test rim, the sections of which are axially movable. In the region of the rim flanges, the test rim is provided with vulcanizing mold contours for receiving the bead-seating surfaces of a tire. The spaces between the tire sidewalls and the bead regions are provided with forming rings.

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: An extrusion die having pivotally mounted parts disposed at the die outlet and pivotal locking members for latching the pivotal parts closed.