Patent ID: 6868758

Claim:
A joint apparatus for firmly connecting a head of a wrench with a socket, the joint apparatus including: a joint with a first portion for releasable engagement with the head of the wrench and a second portion for releasable engagement with a socket; a retainer removably attached to the first portion of the joint for abutting the head of the wrench, thus avoiding the joint escaping the head of the wrench; and an auxiliary retainer attached to the first portion of the joint for frictional contact with the head of the wrench, wherein the joint includes a first annular groove defined in the first portion for receiving the auxiliary retainer, wherein the auxiliary retainer is an O-ring, wherein the joint includes a second annular groove defined in the first portion for removably receiving the retainer, with the second annular groove being axially spaced on the joint from the first annular groove.