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Flexible chain saw for cutting tree limbs

A flexible saw, flexible technology, applied in the application, sawing machine device, cutting tool and other directions, can solve the problems of sawing branches entangled, orientation difficulties and so on

Inactive Publication Date: 2012-10-17
郑少强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Orientation of the saw on the branch is difficult in these systems
Also, there may be problems with entanglement when sawing branches

Method used

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  • Flexible chain saw for cutting tree limbs
  • Flexible chain saw for cutting tree limbs
  • Flexible chain saw for cutting tree limbs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] According to a preferred embodiment of the present invention, figure 1 A user is shown placing the flexible tree saw 10 over a branch 12 of a tree 14 using a telescoping tool 16 . The flexible tree saw 10 includes a flexible cutting chain 18 , a first cord 20 connected to one end of the flexible cutting chain 18 , and a second cord 22 connected to the other end of the flexible cutting chain 18 . A first handle 24 is attached to the end of the cord 20 and a second handle 26 is attached to the end of the cord 22 . The upper end of the telescoping tool 16 includes a rigid hook 28 . In actual use, the user places one of the cords 20, 22 over the hook 28 and then raises the cord 22 and corresponding handle 26 over the branch 12 that the user wishes to remove. With the raised handle 26 placed on the end of the branch opposite the handle 24, the user removes the hook. The user then grabs the handle 26 at the opposite end of the branch 12 using the tool 16 and the end of the...

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Abstract

A flexible tree cutting saw is operable from ground level for cutting limbs from a tree. The flexible saw includes a flexible cutting chain, about two to three feet in length, with a rope attached to either end and handles attached to the ends of the ropes. A telescoping device with a hook at its top end is used to place the saw over the tree limb with the flexible cutting chain on the tree limb,and the hook is designed to effectively grab the raised handle and lower it towards the user. The user grabs the handle and applies downward pressure and a back and forth motion to saw the limb. The flexible tree cutting saw use a jeweler's style chain with a plurality of substantially planar cutting segments, preferably made from stamped sheet steel, which are either linked together directly or linked together using oval chain links. The cutting segments have two cutting edges and preferably have teeth facing in one direction for a majority of the cutting span of the cutting chain. The planar cutting segments are mounted or linked in the chain so that the cutting edges of one segment are substantially perpendicular in orientation with respect to the cutting edges of the adjacent planar cutting segments, when the chain hangs naturally.

Description

technical field [0001] The present invention relates primarily to manual chainsaws for trimming branches from trees. Background technique [0002] The saw of the present invention can be used for other purposes, but it is particularly useful when used for pruning tree branches. Trimming branches from standing trees is often difficult, especially when the branches are so far from the ground that they cannot be easily reached by a person standing on the ground. One solution to this problem is to employ what is often referred to as a flexible tree saw or manual chainsaw. Generally, these flexible tree saws include a flexible chainsaw blade about 2 to 3 feet long, with cords attached to both ends of the chain and handles attached to the ends of the cords. Users sometimes use a long pole and hook to place the flexible chainsaw blade on top of a branch. The user then manipulates the cord causing the cord to hang down to a position where the user can grab it. With the saw in pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G3/08B23D57/02
CPCA01G3/08
Inventor 郑少强
Owner 郑少强
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