| 摘要 |
<p>It is proposed, to transmit a torque between a tool and a screw, a form having force application surfaces (11 to 16) shaped as convex circle arcs with the same radius. The angles (α, β) formed by two force applying surfaces (11 to 16) are alternatingly larger and smaller than 180o, so that the convex points (17 to 19, 21 to 23) between the force applying surfaces are located alternatingly on two concentric circles (20, 24) and form the corners of a regular polygon.</p> |
