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公开(公告)号:US3834049A
公开(公告)日:1974-09-10
申请号:US31285172
申请日:1972-12-07
申请人: BOND S
发明人: BOND S
摘要: A trenching attachment comprising a boom to be mounted on the rear end of a tractor, an endless chain having digging elements thereon carried by the boom, an actuator for moving the boom between transport and digging positions, and a belt for connecting a drive shaft for the chain to a power take-off shaft on the tractor.
摘要翻译: 一种挖沟附件,包括一个待安装在拖拉机后端的起重臂,一个在悬臂上承载有挖掘元件的环形链,用于在运输和挖掘位置之间移动起重臂的执行器,以及用于连接驱动轴 链条到牵引车上的动力输出轴。
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公开(公告)号:US2627681A
公开(公告)日:1953-02-10
申请号:US79133747
申请日:1947-12-12
申请人: GIACINTO DIOTTI
发明人: GIACINTO DIOTTI
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公开(公告)号:US1437594A
公开(公告)日:1922-12-05
申请号:US42798420
申请日:1920-12-03
申请人: STEPHEN KELLY
发明人: STEPHEN KELLY
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