Patent ID: 7117770
Filing Date: 2006-10-10
Classification: B25B

Abstract:
1. A dual function wrench comprising: a driving head and a shank connected to the driving head, the driving head including a first function end and a second function end, the first function end including two fixed jaws which have two respective flat clamping surfaces facing with each other, a first clamping space defined between the two fixed jaws of the first function end, the second function end including a first jaw and a second jaw, a second clamping space defined between the first and second jaws, the first and second clamping spaces being the same size, the two fixed jaws of the first function end being overlapped on the first and second jaws of the second function end, the first jaw having a first convex surface facing the second jaw, the second jaw having a second convex surface facing the first convex surface, a protrusion extending from a distal end of an inside of the second jaw and toward the first jaw, the protrusion including a concaved clamping area which is connected to an end of the second convex surface.