US 7,114,416 B2Granted

Rotatively operating tool for rotatively operated member having a pair of engaging surfaces

AssigneeHonda Motor Co., Ltd.

InventorYoshihisa Hasegawa

Life of this patent

Estimating the term…

Loading patent…

Abstract

In a rotatively operating tool, a lever (5) having a head (4) at its tip end is turnably connected to a handle (6) provided at its tip end with a lower jaw (12). The head (4) is provided with an upper jaw (7) brought into engagement with an engaging surface (2a) of a bolt head (2). A spring (14) is mounted between the lever (5) and the handle (6) for biasing the lever (5) to turn it in a direction of abutment of a stopper face (11) of the lever (5) against the handle (6). When the handle (6) is turned in one direction, the lower jaw (12) at the tip end of the handle (6) is brought into abutment against an engaging surface (2b) of the bolt head (2), whereby the bolt head (2) is clamped between the lower jaw (12) and the upper jaw (7). When the handle (6) is turned in an opposite direction, it is brought into a state in which the clamping of the bolt head (2) is canceled. Even when the lever (5) is turned against a biasing force of the spring (14), the bolt head (2) is clamped between the upper jaw (7) and the lower jaw (12). Thus, it is possible to provide a rotatively operating tool having a simple structure, which is designed so that a rotatively operated member such as a bolt can be rotated in one direction and even in an opposite direction as required by the reciprocally turning operation of the tool.

Claims12

Dependent claims

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.

Dependencies are inferred from the claim text.