Patent ID: 8100036
Filing Date: 2012-01-24
Classification: B25B

Abstract:
1. A ratchet wrench, comprising: a rod-shape handle, with a working end having a pivot portion, and a fixed jaw integrally extended from the working end, and the fixed jaw having a front end; a moving jaw, having a pivoting base pivotally coupled to the pivot portion of the handle by a pivot element, and a clamp having an arc shape between both ends of the clamp and disposed at a position away from a moving end of the pivoting base, and the clamp having a plurality of continuously arranged teeth formed from the moving end, and an opening having a predetermined width and being formed between the front end of the fixed jaw and the moving end of the moving jaw moving end; a ratchet, installed between the two jaws, and having a working hole formed at the center of the ratchet, a plurality of concave portions formed on a hole wall of the working hole, a plurality of teeth continuously arranged along a circumferential surface and disposed at an external circumference of the ratchet, an opening formed on a side of the ratchet and coupled to the opening between the front end of the fixed jaw and the moving end of the moving jaw, and the total length of plurality of teeth of the moving jaw being greater than the width of the opening of the ratchet; an elastic element, installed onto the handle, for propping the moving jaw, such that the moving jaw exerts a compression force against the ratchet, and the teeth of the moving jaw are engaged with the teeth of the ratchet; wherein the handle includes a containing space formed at an internal side of the pivot portion, and provided for installing the pivoting base of the moving jaw, and the containing space includes a bottom edge, and the pivoting base includes a recession, a stop edge formed on a side of the recession of the pivoting base, and the recession includes a protruding base, and the elastic element has a sheath hole and installed onto the protruding base, and both ends of the elastic element are first and second abutting ends, and the first abutting end abuts against the stop edge, and the second abutting end abuts the bottom edge.