| 摘要 |
<p>In a transmission system, in particular a ball link transmission system, comprising driving wheel(s) and/or reversing wheel(s) (2) with a peripheral circle of concave recesses (14) which mainly have the shape of hemispheres, and cooperating therewith an endless chain (12) of hollow, spherically shaped link members (16) which are individually connected by means of linking rods (18), opposite end parts of which are pivotably embedded in the hollow link members (16), the endless chain (12) comprises hollow, spherically shaped link members (16) of plastics material and is produced by successively welding together hemispherically shaped, hollow link members (20) which prior to welding have been pivotably connected to the said linking rods (18) by means of locking means (22) cooperating with bearing means (26), at least one of the said hemispherically shaped link members (20) being formed with a side opening (40).</p> |
