公开(公告)号：US4700785A

公开(公告)日：1987-10-20

申请号：US843418

申请日：1986-03-24

申请人： Robert J. Bartusek ,  Ronald M. Steilen ,  Vernon E. Rettig

发明人： Robert J. Bartusek ,  Ronald M. Steilen ,  Vernon E. Rettig

IPC分类号： A01B35/24 ,  A01B61/04

CPC分类号： A01B61/046 ,  A01B35/24

摘要： A shank assembly including a rearwardly opening bracket pivotally mounting a shank. A tension link extends upwardly from a central portion of the shank and through an apertured strap. A stop member at the upper end of the link limits the downward rocking of the shank. An adjustable arm assembly including a trunnion slidably received over the tension link is pivotally connected to the bracket and adjustably compresses a down-pressure spring which encircles the link between the trunnion and the shank. Individual down-pressure adjustments can be made without affecting the transport height of the assembly.

摘要翻译： 一种柄组件，其包括枢转地安装柄的向后开启支架。 张紧连接件从柄部的中心部分向上延伸并穿过带状带。 连杆上端的止动件限制了杆的向下摆动。 包括可滑动地容纳在张力连接件上的耳轴的可调臂组件枢转地连接到支架并可调节地压缩环绕耳轴和柄之间的连杆的下压弹簧。 可以在不影响组件的运输高度的情况下进行单独的下压调节。