| 摘要 |
An adjustable hex wrench structure, in its basic embodiment, requires only two parts: a main body configured with a socket cavity having special modified hex cross-sectional shape, and a user operable clamping screw, traversing a wall of the main body and preferably captivated against loss, with a special pressure disc surface for securing a hex fastener workpiece in place in the modified hex cavity operationally without defacing the workpiece. The main body is made cylindrical in shape and configured with a square driver opening to engage the square end of a conventional socket wrench driver shaft. In a dual socket wrench version, two different-sized modified hex cavities, one in each end portion of the main body, can provide an overall size range greater that 2:1, a single square driver opening being shared, configured in a central bulkhead in the main body: to deploy either cavity, the square end of the driver shaft can be inserted through the opposite cavity to engage the square driver opening in the known detented manner. |
