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1. 发明授权

US3589448A Trip mechanism for ground-working implement 失效
标题翻译：地面工程实施的抓地机制
公开(公告)号：US3589448A
公开(公告)日：1971-06-29
申请号：US3589448D
申请日：1968-09-27
申请人： CASE CO J I
发明人： GAY JAMES E
IPC分类号： A01B61/04 , A01B35/24
CPC分类号： A01B61/046
摘要： A tillage implement having a plurality of spaced ground-working tools, with safety trip means for each tool allowing the tool to move from a normal ground-penetrating position to a position elevated thereabove when an obstruction, such as a rock or a stump, is encountered. Each ground-working tool is mounted for free-swinging movement between the ground-penetrating position and a fully elevated position above the ground, and the tool is positively guided to and from the ground-working position, with the guiding means functioning to allow the ground-working tool to initially move out of the ground-penetrating position without substantial downward movement into the ground, and with the guiding means also functioning to direct the ground-working tool back into the ground at the proper angle of reentry. Hydraulic cylinder means continuously biases each tool toward the groundpenetrating position, with the hydraulic cylinder means yieldably resisting movement of the tool away from the ground-penetrating position and returning the ground-working tool into the groundpenetrating position after the obstruction has been cleared.

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