Patent ID: 8297155

Claim:
A combination comprising, in combination: a wrench including a head having a drive portion adapted to drive an object, with the wrench further including a handle having a first end interconnected to the head and a second end spaced from the first end along a longitudinal axis, with the second end of the handle including a receptacle extending in a radial direction perpendicular to the longitudinal axis, with the handle further including an annular groove on an outer periphery thereof and intermediate the first and second ends; a resilient retaining member partially received in the annular groove of the handle; an extension including a tubular member defining a longitudinal hole, with the longitudinal hole having an opening in an end of the tubular member, with the second end of the handle slideably and releasably received in the longitudinal hole along the longitudinal axis via the opening, with the tubular member having inner and outer peripheries spaced in the radial direction, with the tubular member further including a positioning hole extending from the inner periphery through the outer periphery of the tubular member and in communication with the longitudinal hole, with a spacing between the positioning hole and the opening along the longitudinal axis larger than a spacing between the receptacle and the annular groove along the longitudinal axis; a positioning member slideably received in the receptacle in the radial direction; a spring received in the receptacle, with the spring biasing the positioning member to partially extend through the positioning hole beyond the tubular member, coupling the second end of the handle with the tubular member, with a portion of the positioning member pressing against the inner periphery of the tubular member, with the positioning member being pushable in the radial direction to disengage from the positioning hole allowing disengagement of the tubular member from the handle, with an exposed portion of the retaining member outside of the annular groove of the handle pressing against the inner periphery of the tubular member when the extension is engaged with the handle.