TW349046B - Wrench with ratcheting action - Google Patents

Abstract

A wrench comprising a handle and an integral head, the head having a top surface, a bottom surface and a chamber formed therein, the chamber having a wall thereabout, at least one tooth being formed on the wall of the chamber and projecting into the chamber, a cylindrical rotor disposed in the chamber, the rotor having a plurality of spaced-apart teeth formed axially on a circumference thereof, the rotor having means thereon to engage a workpiece, in which the at least one tooth on the wall of chamber has a first surface having a height and a second opposite surface having a height less than the first surface, the first surface of the at least one tooth on the wall of the chamber engaging one of the teeth on the rotor, the chamber in the head having a cross-sectional area and the rotor having a smaller cross-sectional area, in which the rotor is translatably and eccentrically moveable within the chamber in the head, such that movement of the handle in a first direction engages the at least one tooth on the wall of the chamber with one of the teeth on the rotor, and transmits torque to the rotor and the means to engage the workpiece, and movement of the handle in a second opposite direction disengages the teeth and moves the rotor from the engagement with the at least one tooth on the chamber wall.