| 摘要 |
An active guard for use with a line trimmer includes a shield coupled to the trimmer's rotatable shaft casing, a brush member for moving weeds toward the trimmer's cutting line, and a device for transmitting power from the trimmer's rotatable shaft to the brush member for rotating the brush member. The device for transmitting power from the trimmer's rotatable shaft to the brush member includes a belt and pulley assembly or alternately a gear train and a flexible shaft. The top portion of the shield includes upper and lower walls for enclosing the power transmission device. The trimmer's rotatable shaft rotates, and the power transmission device transmits power from the trimmer's rotatable shaft to the brush member, causing the brush member to rotate. The rotating brush member contacts and moves weeds toward the trimmer's cutting line, thus preventing damage to trees and buildings while ensuring that an area is completely trimmed.
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