| 摘要 |
<p>A cylindrical net body using helical wire members that can be easily assembled and disassembled at a working site. The invention provides also a cylindrical net body using helical wire members that have high tenacity and high durability and yet can reduce the weight. Wire members having a predetermined outer diameter are wound in predetermined lead and predetermined pitch to provide helical wire members in such a fashion that a diameter of a helix is about twice the outer diameter of the wire members, crests and troughs have substantially a similar shape, and each trough is positioned outside the center of the helix. The helical wire members are wound into a coil shape to form transverse helical wire members. Longitudinal helical wire members formed of the helical wire members are united and fixed side by side with the transverse helical wire members, with predetermined gaps, to form a cylindrical net body.</p> |
