公开(公告)号：US06182430B2

公开(公告)日：2001-02-06

申请号：US09310116

申请日：1999-05-12

申请人： James A. Blarek ,  David A. Nemke

发明人： James A. Blarek ,  David A. Nemke

IPC分类号： A01D3472

CPC分类号： A01D34/73 ,  Y10S56/17

摘要： A lawnmower blade assembly, including a replaceable cutting edge insert and method for its use. The cutting edge insert is disposed within a recess of a support member at each end of a centrally rotatable main blade. The recess has a blunted front edge, a back shoulder, an outside shoulder, and a passage for an insert release tab. Two threaded preset Allen bolts, protruding from the recess floor, are permanently locked into position. The bolts are not specifically designed to carry the load of the rotating lawnmower blade. The back and outside shoulders of the recess provide most of the force necessary to retain the insert against rotational and centrifugal forces. The cutting edge insert, having substantially the same profile as the recess, and having slotted holes for reception of the bolts, can be slid in and out of the recess. An interference-type friction fit exists between the preset bolt head and the floor of the recess. The insert, having a razor-sharp cutting edge along its bottom surface, cantilevers slightly over the blunted edge of the main blade. The insert has a release tab, flush with the outside edge of the support, enabling a user to easily tap the insert out of position when it is ready to be replaced. The outside and back shoulders are positioned to provide retaining forces against the insert.

摘要翻译： 割草机叶片组件，包括可更换的切割刃插入件及其使用方法。 切削刃插入件设置在支撑构件的凹部内，在可中心旋转的主叶片的每个端部。 凹槽具有钝的前边缘，后肩，外肩部和用于插入件释放凸片的通道。 从凹槽底部突出的两根螺纹预设的内六角螺栓被永久锁定到位。 螺栓不是专门设计用于承载旋转割草机叶片的负载。 凹槽的后肩和外肩提供了保持插入件抵抗旋转和离心力所需的大部分力。 具有与凹部基本相同的轮廓和具有用于接收螺栓的开槽孔的切削刃插入件可以滑入和滑出凹部。 在预设螺栓头和凹槽的底板之间存在干涉型摩擦配合。 插入件沿着其底部表面具有剃刀锋利的切削刃，悬臂稍微超过主刀刃的钝边。 插入件具有与支撑件的外边缘齐平的释放卡舌，使得用户能够在准备更换时轻松地将插入件从插入位置拔出。 外肩和后肩定位成提供抵抗插入物的保持力。

公开(公告)号：US20120110970A1

公开(公告)日：2012-05-10

申请号：US12939830

申请日：2010-11-04

申请人： JAMES A. BLAREK

发明人： JAMES A. BLAREK

IPC分类号： A01D34/52

CPC分类号： A01D34/73

摘要： The mower blade with replaceable inserts includes a blade bar having diametrically opposite reliefs therein for replaceable cutting inserts. Headed pins extend from each relief, and each insert has corresponding slots. The slots have larger diameter outer ends to clear the larger diameter heads of the pins, the inner portions of the slots being stepped to fit closely about the narrower shanks of the pins. The inserts drop into position over the corresponding pins, and slide outwardly to be retained by the heads of the pins. The outer (lower) surfaces of the heads of the pins are coplanar with the outer (lower) surfaces of the inserts when installed. The cutting edge portions of the inserts extend over and are in direct contact with the corresponding leading edge portions of the blade bar, thus protecting the bar and transferring impact forces directly to the bar rather than through the pins.

摘要翻译： 具有可替换插入件的割草机刀片包括在其中具有径向相对的凸起的刀片杆，用于可更换的切削刀片。 引脚从每个浮雕延伸，每个插入物都具有相应的插槽。 狭槽具有较大直径的外端以清除销的较大直径的头部，槽的内部部分是阶梯状的，以紧密地配合在销的较窄的柄部附近。 插入件落在相应的销上方的位置，并向外滑动以由销的头部保持。 当安装时，销的头部的外（下）表面与插入件的外（下）表面共面。 刀片的刀刃部分延伸越过刀片杆的相应前缘部分直接接触，从而保护杆并将冲击力直接传递到杆而不是通过销。