Ratchet wrench with a direction control ratchet member

A ratchet wrench comprising:

• a handle having a box end with an outer peripheral wall and an inner circular wall which defines a circular opening that has a rotating axis passing through a center thereof, and a grip portion extending from said outer peripheral wall and elongated in a longitudinal direction, said grip portion including a proximate end relative to said outer peripheral wall, said proximate end having a lower wall and an upper wall which defines a second opening therein that extends towards said lower wall so as to form a proximate abutting wall extending in a direction transverse to said longitudinal direction and proximate to said inner circular wall, said proximate end further having a receiving chamber that extends in a radial direction relative to said rotating axis between said proximate abutting wall and said inner circular wall;
• a circular adapter disposed in said circular opening and rotatable relative to said inner circular wall about said rotating axis, said circular adapter being adapted for engaging a workpiece to be turned, and having an outer rim wall with a toothed surface facing said inner circular wall;
• a ratchet member having a stem that is disposed rotatably in said receiving chamber and that extends into said second opening and an engaging head that is disposed rotatably in said receiving chamber and that extends from said stem into said circular opening, said engaging head including at least one ratchet tooth to be brought into engagement with said toothed surface;
• and
• a biasing member for biasing said ratchet tooth to engage said toothed surface;
• whereby, once said stem is turned 180 degrees about said radial direction while it is pulled to disengage said ratchet tooth from said toothed surface against biasing action of said biasing member, the direction of driven rotation of said circular adapter will be reversed.