| 摘要 |
Chainsaw guide bar with a nose sprocket between two side plates (15), a longitudinal groove (11) on each longitudinal edge and a curved groove (14) around the nose through which the sprocket teeth protrude, where the thickness of the central part (19) of the sprocket from the bearing to and including the lower part of the teeth is considerably larger than the width of the longitudinal grooves (11). |
