Patent ID: 7389713

Claim:
A socket comprising: a hollow cylinder having one end adapted to fit a socket wrench and the other end adapted to fit a fitting or a fastener; a first clamping unit having an outer surface adapted to closely engage an inner surface of the cylinder and including a groove on an inner surface, the groove being adapted to securely engage the fitting or the fastener, and a transverse threaded through hole; a second clamping unit opposing the first clamping unit and having an outer surface adapted to closely engage the inner surface of the cylinder, the second clamping unit including a groove on an inner surface, the groove being adapted to securely engage the fitting or the fastener, and a transverse threaded through hole; a first fastening unit including an enlarged head, a threaded shank, and a projecting bar at an end of its shank; a second fastening unit including an enlarged head, a threaded shank, and a hole in its shank; and a guide unit for guiding a transverse movement of each of the first and the second clamping units, wherein: the first fastening unit is adapted to transversely drive through the cylinder and the through hole of the first clamping unit to threadedly secure the first fastening unit and the first clamping unit together; the second fastening unit is adapted to transversely drive through the cylinder and the through hole of the second clamping unit to threadedly secure the second fastening unit and the second clamping unit together and sleeve the hole on the bar; in response to clockwise turning one of the first and the second fastening units either the first clamping unit moves toward the second clamping unit or the second clamping unit moves toward the first clamping unit; and in response to counterclockwise turning one of the first and the second fastening units either the first clamping unit moves away from the second clamping unit or the second clamping unit moves away from the first clamping unit.