| 摘要 |
<p>The tubular self-retracting device ( 2 ) has an elongated tubular element ( 6 ) having an open end, a cord ( 8 ) extending through the open end and fitting in the tubular element ( 6 ), a clipping element ( 10 ) attached to the cord ( 8 ) outside the tubular element ( 6 ) and an elongated spring means ( 3 ) mounted inside the tubular element ( 6 ), for urging the cord ( 8 ) inside the tubular element ( 6 ).</p> |
