| 摘要 |
<p>A plurality of circumferentially-spaced driving lugs (16) are formed on the improved square-drive tang (14) of a wrench, such as a ratchet wrench; and these driving lugs cooperate with a corresponding plurality of recesses or pockets (20) formed in the top portion of an improved interchangeable square-drive socket (19), thereby providing for improved torque transmission which is supplemental to, and not a substitute for, the square drive. The improved wrench is compatible with conventional sockets (23), and the improved socket (19) is compatible with conventional wrenches.</p> |
