发明名称 |
RIDGE MARKER FOR AN AGRICULTURAL IMPLEMENT |
摘要 |
A row marker for a planting implement having a floatation slot formed in an extendable marker link arm. The link arm slot is generally longitudinal to the link arm and has a transverse hooked portion at the outer end. Engagement of the end pin of an activating hydraulic cylinder in the hook portion results in a smooth even motion of the marker as it moves from the vertical position to the normal working position. Use of a spring tensioned cable simultaneously provides for full marker arm extension prior to reaching the working position and clear marking through the full range of floatation. |
申请公布号 |
DE3571737(D1) |
申请公布日期 |
1989.08.31 |
申请号 |
DE19853571737 |
申请日期 |
1985.03.13 |
申请人 |
DEERE & COMPANY |
发明人 |
STRINGFIELD WHITE, GREGORY |
分类号 |
A01B69/02;(IPC1-7):A01B69/02;A01C7/00 |
主分类号 |
A01B69/02 |
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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