| 摘要 |
C./NRPortMlCC/CABUI78906_ I DOC-2 )2/212 A bogey assembly including a body for supporting a cantilevered hanger bolt, a wheel to support the body on a rail and a roller, spaced lengthwise of the body and offset relative to the wheel, so as to bear against an overhead surface and resist rotation of the body away from the rail when load is applied to the hanger bolt. |
