发明名称 |
Parallel link mounting arm for a furrow opener |
摘要 |
A trailing arm furrow opener apparatus includes a firrow opener bracket attached to the rear link of a parallel link assembly such that the furrow opener bracket and furrow opener attached thereto is maintained in a constant fore and aft angular orientation as the assembly moves up and down. A packer wheel arm is fixed to one of the upper and lower parallel arm members of the parallel link assembly, and extends rearward from the rear link, and a packer wheel is mounted to the packer wheel arm. A bias device exerts a downward force on the assembly. The presentation angle of the furrow opener with respect to the ground is maintained constant while the assembly moves up and down. |
申请公布号 |
AU2007221788(B2) |
申请公布日期 |
2011.12.22 |
申请号 |
AU20070221788 |
申请日期 |
2007.10.03 |
申请人 |
BOURGAULT INDUSTRIES LTD. |
发明人 |
LUNG, DEVIN;CRESSWELL, MARK |
分类号 |
A01B63/32;A01B63/22 |
主分类号 |
A01B63/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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