| 摘要 |
<p>The present invention relates to engagement devices and coupling members for forming a structural frame work for hollow tubes. One form of engagement device comprises a hollow sleeve (1) through which a tube (31) may be passed. The hollow sleeve has a deformable flared portion (2). A further hollow sleeve member (12) is movable on the outside of the first sleeve and has a surface (13) arranged to co-operate the flared portion to cause it to deform to grip the tube (31). A further engagement device comprises a hollow sleeve portion (100) which is distendable to grip a tube mounted on its surface. A frustoconical wedge (101) is movable whithin the hollow sleeve portion (100) to cause it to distend. A number of engagement devices may be connected together to form coupling members for connecting tubes to form a structural frame work.</p> |
