| 摘要 |
<p>Spacers are used where added bolt length is advantageous. Such spacers are usually one piece and are formed from tubing having a solid cylindrical wall which often splits or yields when stressed by highly torqued bolts. An improved spacer (10) is formed from wound coil (12) to form a spiral walled cylindrical body (20) having advantages over prior spacers. Each spiral (14) includes a portion (26) which abuts each adjacent spiral (14) and a portion (30) which is free of such abutment. </p> |
