Cycle wheel rim and method of manufacture
AssigneeMavic S.A.S.
InventorsBérenger Alexandre, Jean-Pierre Mercat
Life of this patent
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Abstract
The invention includes a method for manufacturing a cycle wheel rim having, in radial cross section, two lateral flanges and a bridge, the rim having an outer surface facing outward of the rim and defined by the bridge and by at least a portion of the flanges. The manufacturing method includes the following: extruding a section; bending the section; assembling the ends of the hoop formed from the section by joining one to the another; drilling holes in the bridge for fastening the spokes; machining the entire outer surface in a radial plane and on at least a portion of the circumference of the rim.
Claims27
A method for manufacturing a rim for a cycle wheel, the rim having a U-shaped radial cross section, with two lateral flanges and a bridge connecting the flanges to one another and positioned to be opposite an axis of rotation of the wheel, the rim having an outer surface facing outward of the rim and defined by the bridge and by at least a portion of the flanges, the manufacturing method comprising:
- extruding a rectilinear section, the section comprising two lateral flanges and a bridge connecting the flanges to one another and positioned to be opposite an axis of rotation of the wheel, the section having an outer surface facing outward of the rim and defined by the bridge and by at least a portion of the flanges;
- bending the section to form at least one hoop having two ends;
- assembling the ends of the hoop of the section to one another to define a circumference;
- drilling holes through the bridge for fastening the spokes of the wheel;
- after the drilling, machining at least one median zone of the outer surface of the bridge over at least 95% of the circumference of the rim, the median zone having a transverse width of greater than 4 mm measured perpendicular to a median plane of the rim.
Dependencies are inferred from the claim text.