| 摘要 |
<p>A pin or male member for a coupling device is disclosed. The pin may comprise an elongate non-metallic bar (2) and an elongate metal bar (25). The elongate non-metallic bar (2) has a first end (4), a second end (5), a central portion (9) extending along the elongate non-metallic bar (2), first grooves (7) towards the first end (4), and second grooves (6) towards the second end (5). The elongate metal bar (25) is enclosed in the elongate non-metallic bar (2). The elongate metal bar (25) comprises indents or protrusions, or both, on its surface and the indents or protrusions, or both, engage the elongate non-metallic bar (2).</p> |
