| 摘要 |
<p>The method involves covering a wire (11) of a helical spring using a tubular plastic sheath (14) by dilating the sheath pneumatically for progressing the sheath along the wire, where the covering of the wire is carried out after conformation of the spring. The sheath is closed at an end (18), and engaged on a compressed air ejection tube (16) till the closed end of the sheath is near an orifice of the tube.</p> |
