DE2808496A1 - Safety insert for tubeless tyre - consists of porous covered foam rubber ring to reduce rate of deflation on blowout - Google Patents

Abstract

The safety insert for a tubeless tyre comprises a plastics ring of foam-like texture covered with a special porous skin. This regulates the escape of the compressed air to the tyre in the event of a blowout and enables the vehicle to be stopped safely. The porous holes are funnel shaped, wider on the outside. The foam is braced by a reinforcing insert and the ring can be fitted over any wheel rim. The vehicle can also be driven slowly on the ring.

Description

Wheel-shaped insert for hose

loose automobile tires The present invention relates to one wheel-shaped insert for tubeless motor vehicle tires, characterized in that is that it consists of a foam tire.

According to a preferred embodiment, the innovation according to the invention is wheel-shaped Insert characterized in that it consists of such a foam tire, whose pores are at least predominantly open.

Another preferred embodiment of the wheel-shaped innovation according to the invention Use is characterized in that the Foam tires on its entire surface a closed skin-like layer with the finest Has holes.

A particularly preferred embodiment of the wheel-shaped innovation according to the invention Insert is characterized in that the finest holes in the skin-like The surface layer of the foam tire protrudes like a funnel into the interior d. H.

the diameter of the finest ends protruding into the foam Holes is smaller than the diameter of the holes arranged on the surface of the skin end up.

Hit the wheel-shaped insert for tubeless vehicle tires according to the innovation becomes an urgent technical problem, namely the problem of driving safety solved by motor vehicles in the event of suddenly bursting tires or tire covers.

So it is here in the broadest sense of the subject according to the innovation Senses a product for accident prevention in the event of a vehicle tire bursting.

The wheel-shaped insert according to the invention is introduced into the tire and this is then mounted on the rim in the usual way. The so-called pumping up of the tire d. H. the loading with the respective for the tire size or tire type suggested atü-number happens with the completely assembled tire in the usual Way.

The vehicle tires now burst, for example, even at high speed d. H. the so-called ceiling, for example by the action of on the street lying objects, obstacles and the like or even without external influence, so the compressed air escapes from the tubeless motor vehicle tire, such as Experiments have proven to be flawless, no longer explosive, but essential delayed. This becomes the driver of the vehicle in the position offset, in the first few seconds after the vehicle tire bursts the vehicle still safe to have in hand, so that also the process of bringing about the diminution the speed can be carried out safely. Surprisingly, it did also shown that the wheel-shaped insert according to the invention even with complete escape the excess air pressure from the damaged vehicle tire, the vehicle is still drivable receives. It is also possible to leave the vehicle after the excess air pressure has completely escaped at a relatively high speed numerous kilometers valso at least up to continue to the next gas station; Extensive tests have shown that it it is even possible to drive around tight corners at high speed d. H. the wheel-shaped insert in accordance with the innovation replaces over numerous kilometers the excess air pressure in the damaged tubeless vehicle tire.

The essence of the present innovation is now based on FIGS. 1 and 2 further explained.

Figure 1 shows the wheel-shaped insert according to the innovation in an overall view, with a piece cut out.

Figure 2 shows a vertical section through part of the innovation according to the invention wheel-shaped insert.

The wheel-shaped insert is designated as a whole by the reference number 1 and consists of a foam tire, which is e.g. circular, square, may be hexagonal or higher angular. The foam has the reference number 2.

With the reference sign 3 is in a preferred embodiment above all or at least part of the surface of the foam tire arranged Denotes skin which has the finest holes and which is integral with the foam connected is.

In FIG. 2, the reference numeral 2 again denotes the open-cell foam designated; with the reference number 3 is that on the surface of the foam tire arranged skin-like layer marked with the open-cell foam 2 is integrally connected, and the so-called funnel-like fine holes LI has d. H. the diameter of the holes in the skin is the same as that open-cell foam facing places much smaller than on the opposite Hole ends d. H. on the outer surface of the skin layer 3.

This is effected, so to speak, according to the barb principle that when Inflating the motor vehicle tire the compressed air relatively easily through the finest Holes 4 gets into the interior of the open-cell foam tire, but that one The compressed air escapes from the interior of the foam tire} that is, from the motor vehicle tire, for example occurs relatively slowly when the tire cover 1 is damaged, an effect which for the reasons mentioned above to achieve optimal driving safety when sudden bursting of the tire cover is highly desirable.

The shape of the cross section of the wheel-shaped insert according to the invention is basically arbitrary, it can be designed round or square; preferably is the cross-section or the cross-sectional shape of the wheel-shaped according to the invention Use adapted to the geometric relationships of the various tire shapes.

According to a preferred embodiment, the outer periphery of the wheel-shaped insert according to the invention formed with a reinforcement; these Reinforcement preferably consists of an integral part with the outer periphery of the wheel-shaped insert connected to the reinforcement strip, which in turn is preferably consists of a rubber strip.

According to another embodiment, there is the reinforcement strip on the outer periphery made of a textile or plastic tape. In the enclosed In FIG. 1, this reinforcement band is identified by the reference number 5.

Blank page

Claims (7)

Pat e nt to claims i. Rough-shaped insert for tubeless motor vehicle tires characterized in that the insert consists of a foam tire. 2. Wheel-shaped insert according to claim ls characterized in that it consists of an at least predominantly open-cell foam. 3. Wheel-shaped insert according to claims 1 or 2, characterized in that that the foam tire is at least predominantly a skin-like surface on its surface with the foam tire integrally connected layer, the fine holes owns. 4. Wheel-shaped insert according to claims 1 or 2, characterized in that that the foam tire on its entire surface is one piece with the Foam tire has connected skin-like layer which has fine holes. 5. Wheel-shaped insert according to claims 3 or 4, characterized in that that the fine holes in the skin-like top layer of the foam tire in the Way pointed or are funnel-shaped that the pointed ends in the interior of the foam protrude d. H. that the diameter of the protruding into the foam Hole ends is much smaller than the diameter of the skin surface arranged hole ends. Claims 6. Wheel-shaped use after at least one of the Claims 1 to 5, characterized in that a reinforcement (S) on the outer periphery is arranged. 7. Wheel-shaped insert according to claim 6, characterized in that the reinforcement running around the outer periphery of the wheel-shaped insert (5) from a rubber strip which is connected in one piece with the wheel-shaped insert is, exists.