| 摘要 |
<p>To improve the geometrical arrangement of spoked wheels for bicycles or motorcycles and lengthen the life thereof, the spoke nipples are applied on the wheel rims by means of bushes formed of two cylindrical coaxial bodies of different diameter for housing respectively the conical head and the cylindrical section of the nipples and being partially telescoped and reciprocally connected. The bushes are apt to be riveted onto the inner element of the rim, with the common axis of the cylindrical bodies slanting in respect of the rim radius by an angle equal to half of the mean angle between that of maximum deviation and that of minimum deviation of the wheel spokes, depending on their variable assembly conditions. The bushes are realized in two models, each of which has the common axis of the two cylindrical bodies slanting in respect of the rim radius symmetrically as in the other model, and they are applied into holes of the rim made along common axes having the four inclinations required to obtain the substantial coaxiality between the nipple and the wheel spoke in any assembly condition.</p> |
