| 摘要 |
Improvements to means for clasping the extremities of the curved elastic metal band (2), forming the body of the clamp, wherein one of the extremities (1), which corresponds to the tongue (3), has two protecting perpendicular small columns (4, 5), aligned one after the other, obtained by drawing the material of the band where said columns originate, and the opposite extremity to be overlapped (6), presenting two through-holes (11, 12) wherein are introduced the two columns when the extremities of the curved metal clamp are overlapped, by application of a temporary pressure, the rear column (5) avoiding negative rotary movements around its connexion point, the shape of both columns being optionally trunco-conical. |
