| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a rim having an upper bridge of the shape different from that of a conventional one in which a tire is inflated, and easily and effectively assembled to the upper bridge of the rim airtightly. <P>SOLUTION: The rim includes a body 5 with a substantially annular extension having a radially outer portion 6a shaped for coupling with a tire 40, The radially outer portion 6a includes an annular bottom wall 12 provided with a hole 16 for an inflation valve 100, the annular bottom wall 12 includes a central annular recess 20 and two side annular portions 24 arranged on axially opposite sides with respect to the central annular recess 20, the recess 20 includes at least on one side thereof and at least in an area circumferentially distal from the hole 16, with reference to a cross section of the rim, a radially inner surface 26 and a radially outer surface 28, and the radially outer surface 28 has a different bending radius R3 to that of the radially inner surface 26. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
