Rim for a bicycle wheel made from composite material with a wear indicator and wheel comprising such a rim
First Claim
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1. A composite bicycle rim comprising:
- two opposite sides which define respective braking races that are subject to wear as a consequence of braking, the two opposite sides joined by an upper bridge having two thickened end portions comprised of folded sheets of composite material, the braking races having;
at least one outer layer formed from composite material that forms the braking races and encloses the folded sheets of composite material of the upper bridge,and a middle layer positioned such that contact between the folded sheets of composite material and the at least one outer layer is uninterrupted, the middle layer having at least one wear indicator arranged in the rim in an inner position at a predetermined level with respect to the at least one outer layer so that it becomes exposed when the at least one outer layer wears down to the predetermined level.
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Abstract
A composite rim (1) for a bicycle wheel (60). The rim has at least one braking surface (20) and a wear indicator (40) that indicates when a predetermined level of wear has been reached at the braking surface (20). The wear indicator (40) is arranged in the rim (1) so that its does not affect the outer surface of the rim (1) or weaken its mechanical strength.
36 Citations
92 Claims
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1. A composite bicycle rim comprising:
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two opposite sides which define respective braking races that are subject to wear as a consequence of braking, the two opposite sides joined by an upper bridge having two thickened end portions comprised of folded sheets of composite material, the braking races having; at least one outer layer formed from composite material that forms the braking races and encloses the folded sheets of composite material of the upper bridge, and a middle layer positioned such that contact between the folded sheets of composite material and the at least one outer layer is uninterrupted, the middle layer having at least one wear indicator arranged in the rim in an inner position at a predetermined level with respect to the at least one outer layer so that it becomes exposed when the at least one outer layer wears down to the predetermined level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A composite wheel rim comprising:
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multiple layers of composite materials that define a lower bridge, an upper bridge and opposing sides extending between the lower bridge and the upper bridge, the upper bridge having two thickened end portions comprised of folded sheets of composite material and enclosed by an outermost layer of the multiple layers of composite materials, a braking race on an exterior surface of at least one side, an intermediate layer arranged radially below the folded sheets of composite material such that contact between the outermost layer and the folded sheets of composite material is uninterrupted, the intermediate layer having a wear indicator positioned within the at least one side inwardly from and opposite the braking race at a predetermined position from the braking race so that the wear indicator signifies a need to check the rim when the braking race is worn to the predetermined position. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77)
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78. A composite bicycle wheel rim comprising:
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multiple layers of composite materials that define a lower bridge, an upper bridge, left and right sides extending between the lower bridge and the upper bridge, and defined braking surfaces on an outermost layer of the multiple layers that is subject to wear as a consequence of braking, the upper bridge having two thickened end portions comprised of folded sheets of composite material and enclosed by the outermost layer, an intermediate layer of the multiple layers arranged radially below the folded sheets of composite material such that contact between the outermost layer and the folded sheets of composite material is uninterrupted, the intermediate layer including a wear indicator positioned inwardly from and opposite at least one of the braking surfaces at a predetermined depth from the at least one of the braking surfaces so that the wear indicator becomes exposed when the at least one of the braking surfaces is worn to the predetermined depth.
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79. A composite bicycle wheel rim comprising:
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an outer layer, an inner layer, and at least one intermediate layer of composite material, at least the outer and inner layers defining a lower bridge, an upper bridge having two thickened end portions comprised of folded sheets of composite material and enclosed by the outer layer, and left and right sides extending between the lower and upper bridges, with a braking surface on at least one side of the outer layer, the at least one intermediate layer arranged radially below the folded sheets of composite material such that contact between the outer layer and the folded sheets of composite material is uninterrupted, the at least one intermediate layer having a wear indicator positioned at a predetermined depth underneath the outer layer so that it becomes exposed when the braking surface is worn to the predetermined depth. - View Dependent Claims (80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92)
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Specification