| 摘要 |
<p>Double-roller curtain-hanger is of polyoxymethylene which is springy and has low cold deformation. The rollers, connected to the cylindrical axles or their hubs, are running jackets which are springy under load. Hollow cylindrical support bodies are within the jackets, separated by annular gaps, and connected to the hubs; their cylinder wall is thicker than the jacket. Preferably the gaps between the supports and the outwardly-diverging jackets are coaxial to the axle or parallel to the jackets.</p> |
