发明授权
- 专利标题: Flexible saw
- 专利标题(中): 柔性锯
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申请号: US947017申请日: 1978-09-29
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公开(公告)号: US4193188A公开(公告)日: 1980-03-18
- 发明人: Robert M. Johnson
- 申请人: Robert M. Johnson
- 专利权人: Johnson Robert M
- 当前专利权人: Johnson Robert M
- 主分类号: A01G3/08
- IPC分类号: A01G3/08 ; B23D57/02 ; B23D61/18 ; B23D45/00
摘要:
This invention pertains to means for and a method of trimming branches of trees and particularly branches high above the ground, by means of spaced cutting collars with sharp teeth at one end crimped upon a flexible cable, without using a pole saw, climbing the tree, or using a ladder. Means are also provided in the form of lead weights, sand bags, etc., to carry the flexible cutting table into position over the branch desired to be cut.
公开/授权文献
- US4753120A Friction impulse transmission mechanism 公开/授权日:1988-06-28