| 摘要 |
A chain 10 adapted to be driven over a horizontal pan, said chain 10 including an oblong endless horizontal link 18, and an oblong endless vertical link 22, said vertical link 22 having an overall height and said horizontal link 18 having a horizontal width, said width to height ratio being greater than 1.3. The width to height ratio may be 1.6. The vertical link 22 of the chain may have a 'D' shaped cross section 13, with the rounded portion of the 'D' cross section 13 facing the centre of the vertical link 22. |
