发明名称 |
AGRICULTURAL DRAWBAR AND SELF-LOCKING BUSHING THEREFOR |
摘要 |
A drawbar assembly includes a self-locking bushing which is supported from the drawbar mounting bracket by a conventional nut and bolt fastener. Each end of the bushing includes radial line projections which bite into the mounting bracket and into a washer interposed between the nut and the bushing when the nut is threaded onto the bolt. By capturing both bushing ends, the bushing cannot rotate to loosen the nut or wear against the mounting bracket and washer. The bushing is formed as a single component with the radial line projections by a powdered metal process and hardened to provide wear resistance. Dissimilar metals in the bushing and the drawbar at the pivotal connection reduce wear.
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申请公布号 |
CA2081430(C) |
申请公布日期 |
1997.03.18 |
申请号 |
CA19922081430 |
申请日期 |
1992.10.26 |
申请人 |
DEERE & COMPANY |
发明人 |
LONG, JOHN DAVID;NIETING, JOHN OTTO |
分类号 |
A01B59/04;F16C11/04;F16C33/08;(IPC1-7):A01B59/042 |
主分类号 |
A01B59/04 |
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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