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    • 2. 发明授权
    • Agricultural tool shank and spring release
    • 农具和弹簧释放
    • US4399874A
    • 1983-08-23
    • US174176
    • 1980-07-31
    • John W. Ryan
    • John W. Ryan
    • A01B15/02A01B61/04A01B23/02
    • A01B61/046A01B15/025Y10T403/635
    • A plough shank having a rounded leading edge portion with a leading surface, a trailing portion, a web connecting the trailing and leading portions, an attachment mechanism at the top of the shank to enable attachment of the shank to a plough frame so that the leading surface is inclined by 60.degree. to 80.degree. to the horizontal, and a construction at the bottom of the shank to enable the attaching of a digging point thereto. The attachment mechanism may comprise a lobe integral with the shank and received in a clamp for attachment to a tool bar. The clamp may include two pivotably connected portions with an interconnected spring or hydraulic system.
    • 具有前缘表面的圆形前缘部分的犁刀柄,后部部分,连接后缘部分和引导部分的腹板,在柄部顶部的连接机构,以使柄能够连接到犁架上, 表面相对于水平面倾斜60°至80°,并且在杆的底部处构造以使挖掘点附接到其上。 附接机构可以包括与柄部一体的凸角并且被接收在用于附接到工具杆的夹具中。 夹具可以包括具有互连的弹簧或液压系统的两个可枢转地连接的部分。