| 摘要 |
<p>A bicycle has a drive chain with a chain-guard which is screwed to a fixture. The chain guard is fabricated from an elongated flat metal bar which esp. has a-right angled cross section (2) with an elongated hole (6). The right-angled section locates between the chain strut (3) and rear wheel, and is screwed to the strut. The right angle is separated from the strut by a dampening spacer.</p> |
