TREE GRAB : an enhancement for extension ladders that allows a person to safely climb on any part of the tree

摘要

#$%^&*AU2020100679A420200604.pdf#####TREEGRAB- ABSTRACT An enhancement for extension ladders that allows a person to safely climb on any part of the tree by establishing a non-slippery contact between the ladder and one of its branches. It comprises of a V shaped hook that has multiple exposed edges that prevent the ladder from sliding along the branch.106 103 101 107 102 loo 104 105 108 r I ra