| 摘要 |
<p>The screw cap opener is made of metal with 9 centimeter (cm) in length and 6.5 cm wide, where the metal has a thickness of 1 to 2 millimeter. A stem (7) of metal, wood or plastic is connected with the opener, where the stem is 9 cm long with a diameter of 2 cm. A protruding curve of about 0.7 cm is folded downwards at the beginning of the opener, where the curve is folded at an angle of 90 degrees. The corrugated edge is provided with metal spikes. A semi-circular movable holding block (3) is provided with a threaded rod (4).</p> |
