-
公开(公告)号:US11980123B2
公开(公告)日:2024-05-14
申请号:US17002084
申请日:2020-08-25
摘要: A trailing arm assembly includes a frame bracket, a first frame, a parallel linkage, an adjustable biasing member, and a second frame. The frame bracket can include a first connection portion and a second connection portion. The parallel linkage pivotably connects the frame bracket and the first frame via a first pivot and a second pivot on the second connection portion of the frame bracket and a third pivot and a fourth pivot on the first frame. The adjustable biasing member pivotably connects to the frame bracket at a first end and pivotably connected to the parallel linkage at a second end, wherein the adjustable biasing member is configured to provide a downward force on the first frame. The second frame is connected to the first frame via a second parallel linkage.
-
公开(公告)号:US11723301B2
公开(公告)日:2023-08-15
申请号:US17068652
申请日:2020-10-12
摘要: A trailing arm assembly includes a frame bracket attachable to a planter towing frame, a first frame, and a four bar parallel linkage connecting the frame bracket and the first frame with a first pivot and a second pivot on the frame bracket and a first pivot and a second pivot on the first frame. The trailing arm assembly also includes an adjustable biasing member extending from the parallel linkage to the frame bracket. The parallel linkage is connected between the first frame and the frame bracket such that the parallel linkage maintains a parallel orientation of the first frame. The adjustable biasing member is adjustably connected to a portion of the parallel linkage.
-