| 摘要 |
<p>The pulley (10) has an engaging portion (12) extending over an external periphery for transmitting power of the pulley to a belt (60), and two separated intervention components (30, 40) movable against each other between two relative positions concerning to degree of freedom (4). The components form partial engaging areas (32, 42) of the engaging portion, where the engaging areas have recesses (34, 44) for controlling the relative movement of the components concerning to the degree of freedom during intervention of the belt that is adapted to the recesses. An independent claim is also included for a work spindle comprising an adjustable tensioning arrangement provided in a spindle main body.</p> |
