发明公开
EP1568646A3 Improved sheave design 有权
改进的滑轮设计

Improved sheave design
摘要:
A traction sheave (10; 40) for engaging an elevator rope (24), the traction sheave comprising:

a traction surface for engaging and driving the elevator rope, the traction surface having an circumferential surface roughness in a range of approximately 1.0 to approximately 3.0 microns wherein the traction surface comprises a corrosion-resistant surface coating.
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