发明名称 |
Soil crust loosening apparatus |
摘要 |
An apparatus for loosening a crust formed in the soil over planted seeds. A drum having a plurality of fingers rotatably disposed around an outer cylindrical surface thereof is biased toward the ground by spring rods which are adjustably attached to a frame. The frame is typically mounted to a prime mover such as a tractor or to a cultivator or the like attached to an agricultural tractor.
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申请公布号 |
US4768596(A) |
申请公布日期 |
1988.09.06 |
申请号 |
US19870028738 |
申请日期 |
1987.03.23 |
申请人 |
HARRISTON INDUSTRIES, INC. |
发明人 |
RISKI, JOHN D. |
分类号 |
A01B21/04;A01B39/08;(IPC1-7):A01B29/06;A01B35/28;A01B39/12 |
主分类号 |
A01B21/04 |
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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