发明授权
- 专利标题: Rake apparatus
- 专利标题(中): 耙机
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申请号: US823190申请日: 1992-01-21
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公开(公告)号: US5249413A公开(公告)日: 1993-10-05
- 发明人: John T. McDonough, Jr.
- 申请人: John T. McDonough, Jr.
- 专利权人: Mcdonough Jr John T
- 当前专利权人: Mcdonough Jr John T
- 主分类号: A01D7/06
- IPC分类号: A01D7/06
摘要:
The invention comprises a rake apparatus having a handle with three rake heads. The first rake head is fixed to one end of the handle. The second rake head is pivotally mounted to the first rake head, and the third rake head is pivotally mounted to the second rake head. The rake heads each have elongated rake tines mounted to the heads at one of the ends of the tines with the tines bent laterally at their other ends, and with the rake heads mounted one in front of the other. Spring means are provided between the first and second rake heads and the second and third rake heads to urge the second and third rake heads into parallel relation to the first rake head.
公开/授权文献
- US4797764A Recording disk with low total indicated runout 公开/授权日:1989-01-10
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