Rim or rim portion made of composite material
AssigneeMavic S.A.S.
InventorsJean-Pierre Mercat, Benoît Saillet
Life of this patent
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Abstract
A wheel rim having an axis of rotation, the rim including a first element in the form of a section of a solid of revolution about the axis, made in a single unitary piece from composite material and including a first end and a second end distinct from one another. The first element is made by pultrusion and constitutes, between the first end and the second end, a section of a solid of revolution having an angular arc greater than 350°, the composite material of the first element includes fibers embedded in a thermosetting matrix, the fibers constituting at least 50% of the weight of the first element.
Claims18
A rim for a cycle wheel having an axis of rotation, said rim comprising:
- a first curved pultruded element in the form of a section of a solid of revolution about an axis;
- the first element being a single unitary piece of composite material and comprising a first end and a second end distinct from one another;
- the first element constitutes, between the first end and the second end, a section of a solid of revolution having an angular arc greater than 350°;
- the composite material of the first element comprises embedded fibers, the fibers constituting at least 50% of the weight of the first element;
- the rim having an upper bridge, a lower bridge, and a pair of lateral sidewalls connecting the upper and lower bridges demarcating a hollow body, said hollow body comprising, at least in part, the first element.
A method of manufacturing a cycle rim, said method comprising:
- pultruding at least one curved element in the form of a section of a solid of revolution about an axis;
- the one element comprising a first end and a second end and constituting, between the two ends, a section of a solid of revolution having an angular arc greater than 350°;
- preparing a rim blank from at least the one element, said preparing including machining;
- preparing a blank assembling device to assemble together the two ends of the blank;
- assembling together the two ends of the blank.
A method of manufacturing a rim according to 11, wherein:
- the blank includes two lateral flanges;
- the blank assembly device includes reinforcements.
Dependencies are inferred from the claim text.