| 摘要 |
<p>An expandable pulley (100). The expandable pulley (100) comprises a plurality of belt blocks (10) arranged about an axis of rotation (A). Each belt block (10) bears upon a radial surface extending normally to the axis of rotation. Another surface of each belt block (10) bears upon a conical member (16) surface which is moveable coaxially with the axis of rotation. A spring (22) bears upon the conical member (16) which urges the conical member (16) in an axial direction, which in turn urges the belt blocks (10) radially outward to compensate for a belt length change and to maintain a belt tension. An elastic member (24) holds the belt blocks (10) in contact with the conical member (16).</p> |
