| 摘要 |
<p>A power tool including a motor, an arbor (11) driven by the motor, a blade (10) disposed on the arbor and having a rotational axis, the blade further having a hole (10H), first and second clamps (13,18) connected to the arbor and clamping the blade, at least one of the first and second clamps and arbor have a drive surface (15) for contacting at least part of the arbor hole perimeter, the drive surface having a different shape than the hole, the drive surface having a segment (251,253), which in a first position does not contact a segment (151,153) of the hole, and which in a second position upon rotation of the arbor, contacts a substantial length of the segment of the hole. Also disclosed is a blade (10) having a rotational axis including a main body, a hole (10H) formed within the main body for receiving a drive surface (15), wherein the drive surface has a different shape than the hole, and a segment (251,253), which in a first position does not contact a segment (151,153) of the hole, and which in a second position upon rotation of the drive surface contacts a substantial length of the segment of the hole. <IMAGE></p> |
