Patent ID: 6389934
Filing Date: 2002-05-21
Classification: B25B

Abstract:
A wrench comprising:a shank and a box end connected to an end of said shank, an elongated space defined in said box end and a periphery defining said elongated space comprising a first long side, a second long side and two short sides which are connected between said two first long side and said second long side, said periphery defining said elongated space comprising two identical portions which are symmetrical about an axis P which passes through a mediate point on said first long side and a mediate point on said second long side, each portion of said elongated space comprising a substantial U-shaped cavity which includes one short side, a half first long side and a half second long side, each short side having a first recess and a first engaging surface which connects an end of a periphery defining said first recess, said half first long side having a second engaging surface and a notch connected between said first engaging surface and said second engaging surface, an end of a periphery defining a second recess connecting said second engaging surface, said half second long side having a third engaging surface which connects the other end of said periphery defining said first recess.