| 摘要 |
<p>The section of the bead receiving seat (10a,10b) are formed in circular shape with the developed length (L1). The circumferential anchoring line of the turn up membrane (12a,12b) on the return segments (9a,9b) are axially offset towards the center of a drum by the length (L2) relative to the bead receiving seat. The other length is between 0.7 to 2 times the one length.</p> |
