公开(公告)号：US20080011138A1

公开(公告)日：2008-01-17

申请号：US11777065

申请日：2007-07-12

申请人： Kenneth Brazell ,  Taku Ohi ,  William Buck ,  James Wiltrout ,  Michael Scanlon

发明人： Kenneth Brazell ,  Taku Ohi ,  William Buck ,  James Wiltrout ,  Michael Scanlon

IPC分类号： B23D59/00

CPC分类号： B23D59/006 ,  B28D7/02 ,  Y10T83/207

摘要： A portable hand tool includes a housing with a handle configured to be carried by a user and a motor with a motor shaft rotatably extending therefrom. An output shaft rotatably connected to the motor shaft, upon which a cutting blade is rotatably fixed. The cutting blade is substantially enclosed within a blade guard. An impeller is rotatably mounted with one of the motor shaft or the output shaft and substantially enclosed within a fan housing. A plenum is configured to provide enclosed fluid communication between the blade guard and the fan housing, and at least one aperture defined in the blade guard in communication with the plenum.

摘要翻译： 便携式手动工具包括具有手柄的壳体，该手柄被构造成由使用者承载，电动机具有从其可旋转地延伸的电动机轴。 可旋转地连接到电动机轴的输出轴，切割刀片可旋转地固定在该输出轴上。 切割刀片基本上封闭在刀片防护罩内。 叶轮可旋转地安装有电动机轴或输出轴中的一个并且基本上封闭在风扇壳体内。 增压室被构造成在叶片防护罩和风扇壳体之间提供封闭的流体连通，以及限定在叶片防护罩中的至少一个孔，与通风室连通。