发明名称 Rotating concrete finishing trowel
摘要 A rotary cement or concrete finishing trowel has an operating head at one end of the apparatus that includes at least one cement finishing blade rotatably mounted for movement in a horizontal plane for smoothing a concrete floor surface. A drive motor, e.g., a 2-cycle gas engine, is provided at the other end of the apparatus. An elongated frame element is connected between the motor framework and the operating head and is preferably rigidly connected between them. A drive shaft extends diagonally between the motor and the operating head for imparting rotation to the finishing blade. The elongated frame element can be a tubular housing that surrounds the drive shaft and is rigidly connected at one end to the motor framework and at the other end is rigidly connected to the operating head so that the operator is able to use the frame element as a handle for lifting the entire apparatus over obstructions during operation as the weight of the motor at least partially counterbalances the weight of the operating head.
申请公布号 US2005254896(A1) 申请公布日期 2005.11.17
申请号 US20040846398 申请日期 2004.05.17
申请人 EWER CHARLES J;NIZNIK WILLIAM T 发明人 EWER CHARLES J.;NIZNIK WILLIAM T.
分类号 E01C19/22;E04F21/24;(IPC1-7):E01C19/22 主分类号 E01C19/22
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