| 摘要 |
<p>The prop can be used as a corner support for a lorry canopy frame, and comprises a supporting member with a fixing device and a coaxial telescopic extension piece. A locking device secures the two in position in relation to each other. A spring mechanism, between the member and the extension piece, moves them or allows them to move in relation to each other. The locking device can be freed from one or both of them.</p> |
