| 摘要 |
<p>An apparatus (10) for imparting tension to strands of an endless power transferring member loop (12) encircling a drive sprocket (14) and at least one driven sprocket (16a, 16b). Two tensioning arms (38a, 18b) are spaced apart and have guided movement relative to at least one fixed pin (26) with a tension driver (5) operably engaged with one of the tensioning arms (18a, 18b) for driving both tensioning arms (18a, 18b) in motion acting through a rotatable, motion transfer body (34) located generally centrally with respect to the endless loop power transferring member (12) for connection to corresponding motion transfer locations (30a, 30b) associated with the pair of tensioning arms (18a, 18b), either directly or indirectly. A link assembly (60) can connect first ends (40a, 40b) to the motion transfer body (34) and second locations (42a, 42b) to corresponding opposite ends of the two spaced apart tensioning arms (38a, 18b).</p> |
