Extending socket wrench

Claim 1

AN EXTENSIBLE SOCKET WRENCH COMPRISING, IN COMBINATION A CYLINDRICAL DRIVE BODY HAVING A BORE OF UNIFORM CIRCULAR CROSS-SECTION EXTENDING FROM ONE END THEREOF TO SUBSTANTIALLY THE OTHER END, SAID OTHER END OF SAID BODY HAVING AN OPENING THEREIN FOR RECEIVING A DRIVE HANDLE, SAID BODY HAVING A PAIR OF DIAMETRICALLY OPPOSITE LONGITUDINAL SLOTS IN THE WALL THEREOF EACH TERMINATING SHORT OF THE ENDS OF SAID BODY, A SHANK OF UNIFORM CIRCULAR CROSSSECTION LONGITUDINALLY MOVABLE WITHIN BORE IN SAID DRIVE BODY FORMED WITH AN INTEGRAL SOCKET HEAD AT THE END THEREOF BEYOND SAID BODY PORTION, SAID SHANK HAVING A COAXIAL BORE THEREIN, THE LENGTH OF SAID SHANK INWARDLY OF SAID SOCKET HEAD BEING SUBSTANTIALLY EQUAL TO THE LENGTH OF THE BORE IN SAID DRIVE BODY, A PIN EXTENDING TRANSVERSELY THROUGH SAID SHANK NEAR THE END THEREOF OPPOSITE SAID SOCKET HEAD AND ENGAGING THE SLOTS IN SAID DRIVE BODY TO PREVENT RELATIVE ROTATION BETWEEN SAID SHANK AND DRIVE BODY UNDER DRIVING CONDITIONS, AND SPRING-LOADED RETAINING MEANS WITHIN SAID SHANK ARRANGED TO ENGAGE ONE OF A PLURALITY OF LONGITUDINALLY SPACED RECESSES IN SAID DRIVE BODY TO RELEASABLY HOLD SAID SHANK IN A NUMBER OF DIFFERENT LONGITUDINAL POSITIONS WITHIN SAID DRIVE BODY, THE ENGAGEMENT OF SAID PIN WITH THE ENDS OF SAID SLOTS NEAREST SAID ONE END OF SAID DRIVE BODY PREVENTING COMPLETE WITHDRAWAL OF THE SHANK FROM THE DRIVE BODY.