Patent ID: 6634260
Filing Date: 2003-10-21
Classification: B25B

Abstract:
A wrench tool, comprising:a first elongate member and a second elongate member, each member comprising a top end, an axis, and a bottom end, the second elongate member being hollow throughout its length and containing the first elongate member in coaxial relationship; the first elongate member further comprising at its top end a first torque receiving means fixed rigidly thereto for receiving a rotational torque about its axis, and further comprising at its bottom end a first means for gripping a fastener, the first fastener gripping means being coaxial to the first elongate member; the second elongate member further comprising at its top end a second torque receiving means fixed rigidly thereto for receiving a rotational torque about its axis, and further comprising, at its bottom end, anchoring means for anchoring the second elongate member against rotation; the wrench tool further comprising pulling means interposed between the first torque receiving means and the second torque receiving means, so that actuation of the pulling means causes application of equal and opposite torque to the first and second torque receiving means, respectively, tending to rotate the first elongate member and the first fastener gripping means relative to the second elongate member and the anchoring means, about their common axis.