Continental Aktiengesellschaft

Continental Gummi-werke Aktiengesellschaft

Klaus Gerloff

Horst Sergel

Gerhard De Vries

Hans Menell

Lutz Wedemeyer

Friedrich Klopper

Klaus Von Der Wall

Alexander Kay

Dieter Ehlert

Ludolf Bark

Dieter Aschemann

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.

Method for placing a tread strip, cut to the required length from a

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.

Method and apparatus for checking the concentricity or correct contour

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.

Vehicle wheel with run-flat support

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

Raisable extruder head for extruders

Growing community of inventors

Isernhagen, Germany

Klaus Gerloff