主权项 |
1. A bicycle rim comprising:
a first annular side wall; a second annular side wall; and an annular bridge extending between the first and second annular side walls, the annular bridge having an annular tire support surface extending between the first and second annular sidewalls, the annular tire support surface having a first projection and a first tire seat section, the first projection having at least one first portion and at least one second portion, the at least one first portion and the at least one second portion projecting further radially from a rotational axis of the bicycle rim than the first tire seat section, the at least one first portion and the at least one second portion alternating circumferentially about the bicycle rim, the at least one second portion having a different size from the at least one first portion, the at least one portion and the at least one second disposed on a first side of the bicycle rim respective to a center plane, the center plane being disposed through a center of the annular bridge and perpendicular to the rotational axis of the bicycle rim. |