Patent ID: 7010999

Claim:
A bi-directional adjustable spanner with a driving roller comprising: a head and a handle; the head including: a movable jaw slidably received within a sliding groove of the head; an adjustable sliding rod for driving the movable jaw; a retaining jaw; one side of the retaining jaw being sealed and another side of the retaining jaw having a receiving chamber; one side of the receiving chamber having an opening facing the movable jaw; at least one guide track being formed in the receiving chamber; a stopper extending from the guide track near an upper side of the opening of the receiving chamber; the receiving chamber having a straight receiving groove with a U shape end; the receiving chamber being communicated to the straight receiving groove; a driving roller received in the receiving chamber of the retaining jaw; and a part of the driving roller protruding out of the opening of the receiving chamber towards the movable jaw; an elastomer received within the receiving groove; a resisting pin of the elastomer resisting against the driving roller for providing the driving roller having a resisting elastic force toward the opening of the receiving chamber; and a cover sheet having a configuration corresponding to the receiving chamber; the cover sheet being screwed to the opening of the retaining jaw by a screw.