BICYCLE TYRE

Abstract

The invention relates to a bicycle tyre. A puncture-resistant fibre layer (4) having a plurality of polymer, parallel running tyre reinforcing elements (12) is arranged between the tyre tread (2) and the tyre carcass. Said reinforcing elements (12) are arranged at an angle of between approximately 80 and 110 degrees with respect to the peripheral direction (13) of the bicycle tyre.

Claims

1.-11. (canceled)

12. A bicycle tire comprising a running strip, a tire carcass, tire side walls, and a tire bead having a core; wherein the tire carcass comprises two carcass inlays lying on top of one another which are folded back over the core and terminate in the side wall; wherein a cut-resistant fibrous layer comprising a multiplicity of polymer based strength members, running in parallel are disposed between the running strip and the tire carcass, and wherein the strength members are disposed at an angle between approximately 80 and 110 degrees in relation to the circumferential direction of the bicycle tire; and, wherein the tire side walls are reinforced and the rolling resistance is reduced by way of carcass construction.

13. The bicycle tire as claimed in claim 12, wherein the strength members of the cut-resistant fibrous layer which, in relation to the circumferential direction of the bicycle tire, are disposed substantially at an angle from 85 to 90 degrees.

14. The bicycle tire as claimed in claim 12, wherein the cut-resistant fibrous layer is approximately from 2 to 5 mm narrower than the running strip.

15. The bicycle tire as claimed in claim 12, wherein the strength members of the cut-resistant fibrous layer are composed of a liquid-spun polymer.

16. The bicycle tire as claimed in claim 12, wherein diameter of the strength members is approximately from 0.1 to 0.3 mm.

17. The bicycle tire as claimed in claim 12, wherein the cut-resistant fibrous layer comprises a rubber coating disposed on an upper side and a lower side, wherein the cut-resistant fibrous layer has a material thickness of approximately 0.3 to 0.5 mm.

18. The bicycle tire as claimed in claim 12, wherein the strength members in the cut-resistant fibrous layers are disposed at a high material density, and wherein the spacing of the strength members running in parallel is approximately 50 to 60 strength members per inch.

19. A bicycle tire comprising a running strip, a tire carcass, tire side walls, a tire bead having a core, and a damping rubber inlay disposed above the tire carcass; wherein the tire carcass comprises at least one carcass inlay which is folded back over the core and terminates in the side wall; wherein a cut-resistant fibrous layer comprising a multiplicity of polymer based strength members, running in parallel are disposed between the running strip and the tire carcass, and wherein the strength members are disposed at an angle between approximately 80 and 110 degrees in relation to the circumferential direction of the bicycle tire; wherein the damping rubber inlay comprises a highly elastic rubber, and wherein the damping rubber inlay has a material thickness between 0.2 and 2 mm; and, wherein ends of the at least one carcass inlay, at maximum, reach up to the lateral peripheral regions of the running strip.

20. The bicycle tire as claimed in claim 19, wherein the damping rubber inlay has a material thickness between 0.3 and 1 mm.

21. The bicycle tire as claimed in claim 19, wherein the strength members of the cut-resistant fibrous layer which, in relation to the circumferential direction of the bicycle tire, are disposed substantially at an angle from 85 to 90 degrees.

22. The bicycle tire as claimed in claim 19, wherein the strength members of the cut-resistant fibrous layer are composed of a liquid-spun polymer.

23. The bicycle tire as claimed in claim 19, wherein diameter of the strength members is approximately from 0.1 to 0.3 mm.

24. The bicycle tire as claimed in claim 19, wherein the cut-resistant fibrous layer comprises a rubber coating disposed on an upper side and a lower side, wherein the cut-resistant fibrous layer has a material thickness of approximately 0.3 to 0.5 mm.

25. The bicycle tire as claimed in claim 19, wherein the strength members in the cut-resistant fibrous layers are disposed at a high material density, and wherein the spacing of the strength members running in parallel is approximately 50 to 60 strength members per inch.

26. A bicycle tire comprising a running strip, a tire carcass, tire side walls, and a tire bead having a core; wherein the tire carcass comprises at least one carcass inlay which is folded back over the core and terminates in the side wall; wherein a cut-resistant fibrous layer comprising a multiplicity of polymer based strength members, running in parallel are disposed between the running strip and the tire carcass, and wherein the strength members are disposed at an angle between approximately 80 and 110 degrees in relation to the circumferential direction of the bicycle tire; wherein the damping rubber inlay comprises a highly elastic rubber, and wherein the damping rubber inlay has a material thickness between 0.2 and 2 mm; and, wherein the bicycle tire is a racing bicycle tire and is operated at a minimum tire pressure of approximately 5.5 bar.

27. The bicycle tire as claimed in claim 26, wherein the strength members of the cut-resistant fibrous layer are composed of a liquid-spun polymer.

28. The bicycle tire as claimed in claim 26, wherein diameter of the strength members is approximately from 0.1 to 0.3 mm.

29. The bicycle tire as claimed in claim 26, further comprising a damping rubber inlay disposed above the tire carcass, wherein the damping rubber inlay comprises a highly elastic rubber, wherein the damping rubber inlay has a material thickness between 0.2 and 2 mm, and wherein ends of the at least one carcass inlay, at maximum, reach up to the lateral peripheral regions of the running strip.

30. The bicycle tire as claimed in claim 26, wherein the damping rubber inlay has a material thickness between 0.3 and 1 mm.

31. The bicycle tire as claimed in claim 26, wherein the tire carcass comprises two carcass inlays, lying on top of one another, wherein the side walls are reinforced, and wherein rolling resistance is reduced by way of a carcass construction.

Description

[0022] The invention is to be explained in greater detail using one exemplary embodiment. The drawings show:

[0023] FIG. 1: the cut-resistant fibrous layer in plan view,

[0024] FIG. 2: the bicycle tire in cross section.

[0025] FIG. 1 shows the cut-resistant fibrous layer 4 in the plan view. The individual strength members 12 of the fibrous layer 4 are disposed substantially at an angle of approx. 90 degrees to the circumferential direction 13 of the bicycle tire. The components of the bicycle tire are schematically illustrated in the plan view, wherein position 5 indicates the location of the side wall, and position 11 indicates the location of the tire core. A woven fabric (from polyester polyacrylate) which is known by the trademark Vectran may be used as the cut-resistant fibrous layer, for example.

[0026] FIG. 2 shows the relevant tire components of the bicycle tire in a cross-sectional view. The bicycle tire illustrated has two carcass inlays 6 and 7, lying on top of one another. The carcass inlay ends 10 are folded back over the core 8 on both sides, reaching so as to be shortly below the lateral regions of the running strip 2. The carcass inlay ends 10 cover the side wall of the racing bicycle tire in a substantially complete manner. Thus, four layers of the woven carcass fabric are disposed on top of one another in the region of the side wall, on account of which the side wall overall has a high rigidity. The damping rubber inlay 3 which preferably has a material thickness between 0.3 and 1 mm is disposed below the running strip 2. The rubber inlay 3 covers the lower side of the running strip 2 in a substantially complete manner. Moreover, the cut-resistant fibrous layer 4 which in the figure is illustrated as a dashed line is disposed below the running strip 2. The cut-resistant fibrous layer guarantees optimum puncture protection and rolling resistance. In the case of the new tire construction the carcass inlay ends 10 do not reach below the running strip, on account of which the ride comfort of the racing bicycle tire is significantly improved. The damping rubber inlay 3 likewise contributes toward increasing the ride comfort.

LIST OF REFERENCE SIGNS

Part of the Description

[0027] 1 Bicycle tire [0028] 2 Running strip [0029] 3 Damping rubber inlay [0030] 4 Cut-resistant fibrous layer (dashed line) [0031] 5 Side wall [0032] 6 First carcass inlay [0033] 7 Second carcass inlay [0034] 8 Core [0035] 9 Rim strip [0036] 10 Carcass inlay ends [0037] 11 Position of the core [0038] 12 Individual strength member (angular alignment approx.: 90 degrees) [0039] 13 Circumferential direction of the bicycle tire