| 摘要 |
PCT No. PCT/IT97/00036 Sec. 371 Date Mar. 4, 1999 Sec. 102(e) Date Mar. 4, 1999 PCT Filed Feb. 28, 1996 PCT Pub. No. WO97/31791 PCT Pub. Date Sep. 4, 1997In the single-nut wheel assembly (1) the mutual contact surfaces (13, 23) between the nut (4) and the hub (3) do not rotate against each other during rotation of the nut (4). For this purpose, the nut (4) (or as an alternative the rim (3)) is provided in two bodies (15, 16) free to rotate mutually thanks to the interposition of antifriction means (17). The force necessary for tightening and loosening the nut is thus reduced.
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