| 摘要 |
The roller shaft (6) carries a mounting tube (3) that is preferably made by joining two half tubes (3a,3b). The tube is of polygonal section and has teeth (2) attached to the flat sides in such a way that they can be changed, e.g. by attaching them with bolts. Independent claims are included for: (1) teeth made from steel sheet metal with a chamfered edge; and (2) sheet metal teeth shaped in the flat state and subsequently bent to their final configuration. |
