Method for boring a spoke rim and for providing an insert for the bored rim
AssigneeMavic S.A.S.
InventorsJean-Pierre Mercat, Alban Minville
Life of this patent
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Abstract
The invention relates to the method for manufacturing a rim for a spoke wheel, especially a cycle rim. At least one bridge of the rim is bored with a plurality of through holes with a flow drilling bit operating in the direction of the other bridge, so as to create a backflow chimney at the level of each opening of the upper bridge, whose length is greater than the thickness of the bridge. The rim is equipped with inserts provided to receive the spoke nipples. The inserts are either embedded in the chimney openings, or screwed.
Claims23
A method for making a one-piece bicycle rim bored with openings provided to receive tension spokes for linking with a hub, the one-piece rim having a box with an upper bridge and a lower bridge, said bridges being connected by lateral walls, said walls extending beyond said upper bridge with wings forming with said upper bridge an annular channel to receive a tire, said method comprising:
- boring at least one of said bridges with at least one through hole by means of a flow drilling drill bit to define an elongated tubular chimney.
Dependencies are inferred from the claim text.