发明授权
- 专利标题： Cultivator with screening device
- 专利标题（中）： 带筛选装置的耕作机
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申请号： US652098申请日： 1976-01-26
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公开(公告)号： US4050520A公开(公告)日： 1977-09-27
- 发明人: Ary van der Lely , Cornelis Johannes Gerardus Bom
- 申请人： Ary van der Lely , Cornelis Johannes Gerardus Bom
- 申请人地址： NL Maasland
- 专利权人： C. van der Lely N. V.
- 当前专利权人： C. van der Lely N. V.
- 当前专利权人地址： NL Maasland
- 优先权： NL7018555 19701221
- 主分类号： A01B33/12
- IPC分类号： A01B33/12 ; A01B33/06
摘要：
A cultivator having rotatable soil-working tines on supports has a screening element pivotally connected to the front of the frame to extend downwardly near the supports. Springs bias the screening element to a position adjacent the tines to prevent damage by stones encountered during operation. Adjustment members permit the vertical adjustment of the screening element relative to the tines.
公开/授权文献
- US5740190A Three-color coherent light system 公开/授权日：1998-04-14
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