DE389922C - Running coat - Google Patents

Description

Running coat. The subject of the invention is a tread for pneumatic tires of motor vehicles, etc.

As is known, the barrel jacket generally consists of an inner one Fabric layer and from an outer, only serving as a wear and running pad elastic rubber layer .-- As a result of the flattening caused by the load friction occurs inside the fabric and rubber layer and Zerrtnigell, which results in vain heat development, stress and wear and tear of the barrel jacket assert.

The invention aims to be much gentler and less deep Flattening and correspondingly lower flexing losses of the tire. The invention is based on the fact that the fabric layer is always further away from the roadway at the side is held than in the middle, namely by rushing immediately between the tissue layer and the rubber layer, elastic on all sides and flexible in width wedge-shaped thicker layer or insert, consisting of a soft rubber layer, practical but made of the same Gunnniinmaterial as the surrounding Guinmilaufschicht, by enclosing it in a high tensile strength wrapping made of cord, fabric tape or the like. prevented from being squeezed out at the side and thus from being pressed together, d.li. against Pressure is made resistant.

In the drawing, an embodiment is shown, where cler for the sake of simplicity, air hose located inside the barrel jacket is not is drawn. It shows A11. i a cross-section through the jacket, fig. = and 3 one part of each insert is shown diagrammatically, Fig. d. and 5 each have a cross section through an insert, Fig.6 the tire under the load and Fig.j hurried top view on hasty deposit.

The barrel jacket consists of the inner fabric layer Ge, from <leg outer rubber layer Gic and insert E, these in turn made of vain rounded on all sides and arched, wedge-shaped on both sides and finite one unyielding, tensile strength Uni-winding made of fabric tape (Fig. 2), cord (Fig. 3) or the like provided with soft Rubber layer. The insert itself is vulcanized into the jacket, so that this finit you form a piece, with the insert of the elasticity of the jacket perfectly adapts.

For greater security against lateral squeezing, in particular with cord wrapping, the insert can still have all the edges under the wrapping finite fabric tapes A as shown in Fig. 4. Furthermore, the friction can be within the wrapping in the longitudinal direction as shown in Fig. 5 by embedded cords B o. (-L-i. Be increased.

The insert can be finitely constant width or z. B. finite Constrictions or wavy edges, as the top view (Fig. 7) shows, executed will.

The pressure acting on the insert E is normally distributed ininier evenly on a relatively large surface. In the event of a bump or an obstacle the trapped Guinini is on the roadway to the side of the relatively small pressure surface dodge tin: l bulge out downwards together with the U-wrap until the running layer again firmly atif @ .ier lane rests, whereby the inlet. nevertheless they are pliable and uiiztisamin is compressible, always remains elastic. So that's cool with your tire already a relatively small indentation depth, uni the tissue layer Let it rest firmly on a wide area, whereby the fabric layer is not abrupt and experiences sudden flattening because it is no longer parallel to the Can flatten the road.

As a result of the wedge shape of the inlay, the Malitel surface is preserved in cross section only a very flat curvature, whereby the slip is reduced without it at the same time a favorable material distribution or a favorable lateral material attachment forms.

The inlay only needs to be wrapped on the side (kept light zti "-earth. Uni, however, increases tension and friction within the insert, so that the insert does not stick to the roll bulge participates, the @ mwic @ c-Jung will also be ollen and kept as light as possible.

Claims (1)

PATENT-A @ PROBLEMS: i. Barrel jacket, characterized. <iaß the part of the outer shell that is subject to the flattening on both sides of the cross-section between the fabric layer and the road surface so resistant to pressure is made so that the tissue layer steadily sideways when flattened: further from the Lane remains away than in the middle. Running jacket according to claim r, characterized in that that immediately between the fabric layer and the rubber running layer hurried on both sides the center of the cross-section is resistant to compression (thick) insert or Shift is inserted. 3. barrel jacket according to claim i, characterized in that the insert made of an elastic (soft), ini cross-section on both sides wedge-shaped, Rounded and curved rubber layer on all sides, which is secured by a tensile strength The wrapping or inclusion is prevented from being squeezed out at the side.