Patent ID: 7114416

Claim:
A rotatively operating tool for manipulating a rotatively operated member having a pair of opposed engaging surfaces located on an operated portion thereof, said tool rotatively operating the rotatively operated member by acting against said opposed engaging surfaces, and comprising, a lever integrally provided with a hook-shaped head having, at a tip end thereof, an upper jaw capable of being brought into engagement with one of the pair of opposed engaging surfaces of the operated portion of said rotatively operated member, and a handle connected to an intermediate portion of said lever, said handle provided at a tip end thereof with a lower jaw capable of being brought into engagement with the other of the pair of opposed engaging surfaces of the operated portion of said rotatively operated member, said handle grasped at a base end thereof and turned by an operator, wherein said tool is adapted for turning movements that result in the upper jaw being moved toward and away from the lower jaw, respectively, such that after the upper jaw at the tip end of the lever is brought into engagement with one of the pair of opposed engaging surfaces of the operated portion of said rotatively operated member and said handle is turned relative to said lever in a first direction, said lower jaw is moved toward said upper jaw to abut against the other of the pair of opposed engaging surfaces, whereby the operated portion of said rotatively operated member is clamped between said lower jaw and said upper jaw, and when said handle is turned in an opposite direction, said lower jaw is moved away from the other of the pair of opposed engaging surfaces and said handle is brought into abutment against a stopper face formed on said lever, whereafter said lever is turned along with said handle.