| 摘要 |
A fixed length tree spreading device comprising a shaft provided with engagement members at each of its ends, wherein the shaft comprises an elongate member of thin sheet strip having an L-cross section in which each limb of the L-cross section is approximately the same length and wherein the included angle is from about 90 DEG to about 110 DEG , and wherein the engagement members comprises two tabs, one on each limb of the (tree) L-cross section each at substantially 90 DEG to each limb of the L-cross section together with a short protruding spike member there between substantially in line with the angle of the shaft.
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