公开(公告)号：US07543431B2

公开(公告)日：2009-06-09

申请号：US11032809

申请日：2005-01-11

申请人： Bradley Robert Igl

发明人： Bradley Robert Igl

IPC分类号： A01D34/00

CPC分类号： A01D34/733 ,  Y10S56/17

摘要： A mower blade locking joint for fastening and securing a rotary cutting blade to a vertically aligned spindle driven by an engine. The spindle extends below a mower deck. The blade has a pair of opposing cutting ends and a mounting hole between the cutting ends. The joint includes a threaded section, a lobed section, and a collar. At least one of the spindle and the mounting hole have seven lobes. The lobes have continuous radii, an inner or minor diameter, and an outer or major diameter. The outwardly directed lobes have the same dimensions as the inwardly directed lobes, and both the spindle and the blade have the same cross sectional or surface area. The inner or minor diameters of the spindle and mounting hole are at least 75% of the major or outer diameters.

摘要翻译： 一种用于将旋转切割刀片紧固并固定到由发动机驱动的垂直对准的主轴的割草机叶片锁定接头。 主轴延伸到割草机甲板以下。 刀片具有一对相对的切割端和切割端之间的安装孔。 接头包括螺纹部分，裂片部分和套环。 主轴和安装孔中的至少一个具有七个凸角。 裂片具有连续的半径，内径或小直径以及外径或大直径。 向外指向的凸角具有与向内指向的凸角相同的尺寸，并且主轴和叶片都具有相同的横截面或表面积。 主轴和安装孔的内径或小直径至少为主外径的75％。