| 摘要 |
<p>A head for a rotary drive designed for trimming of vegetation. The head includes two circular plates (18, 20) coaxially arranged with pivotally mounted plastic blades (24) positioned on pins (22) between the plates (18, 20). The blades (24) are held outwardly be centrifugal force but are free to rotate to between the plates (18, 20) when contacting rigid objects. A glide knob (28) extends from the bottom of the head for improved control of the device. </p> |
