| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent posts driven in the ground from being artificially and easily pulled out, which are used in almost cases to show a boundary in an uncertain area such as a forest, but the most of which are difficult to look for due to the growth of grasses that causes the posts to become out of its intended purpose and creates a large number of problems that the posts are cut off together with the grasses by a mower because the position of the posts cannot be checked in grass mowing work demanded once a year. <P>SOLUTION: The signpost must be heightened to easily check the position of the signpost driven in the ground. One or more telescopically extensional posts can be added on site to the upper end of the post to be used to form on site any height of the post required. The dart is also formed such that it has a width larger than the size of the post, whereby, when trying to artificially pull out the post, the soil raked on the dart pushes down the post. As a result, the signpost cannot be pulled out. <P>COPYRIGHT: (C)2012,JPO&INPIT |
