| 摘要 |
<p>A chain comprising a plurality of axially spaced tubular rollers 3, each roller being connected to first and second axially adjacent rollers by first and second links 4, 5, wherein an articulation element 6 is received within each roller 3 that defines an arcuate bearing surface (7, fig 4) on which the roller 3 is rotatably supported and the first and second links 4, 5 are pivotally mounted to the articulation element 6, for rotation relative to the articulation element 6 by first and second pivot members 18, 19 which are rotatably supported by the articulation element 6 and wherein the articulation element 6 comprises an intermediary section 21 provided between the first and second pivot members 18, 19 that spaces the first and second pivot members 18, 19 apart such that they are not in rolling contact with each other. Alternative articulated members are shown in other embodiments.</p> |
