发明名称 Hub conditioning and alignment tool
摘要 The hub conditioning and alignment tool for a wooden car has a cylindrical handle with two opposed faces. A first shaft extends perpendicular to the first face and a second shaft extends perpendicular to the second face. The shafts terminate in tips with depressions. In use, a child squares the hub on the first face and cones the hub on the second face with sandpaper. A child twists the first tip into the axle hole of the wheel for reaming. The steel tool reduces friction between a hub and a car and aligns a wheel with the track to increase the speed of a car.
申请公布号 US6969312(B2) 申请公布日期 2005.11.29
申请号 US20030658041 申请日期 2003.09.09
申请人 DERBY WORX, INC. 发明人 LAUNIUS, JR. WILLIAM E.
分类号 B24D15/00;(IPC1-7):B24D15/00 主分类号 B24D15/00
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