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US 2019/0337770 A1Published application
Coated sheave
AssigneeOtis Elevator Company
InventorsXiaoyuan Chang, David R. Torlai
Life of this patent
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Abstract
An elevator sheave includes a sheave body and a coating on a surface of the sheave body. The coating includes microcracks and a filler in the microcracks. A method of making a sheave for an elevator system is also disclosed.
Claims20
An elevator sheave, comprising:
- a sheave body;
- a coating on a surface of the sheave body, the coating including microcracks;
- and
- a filler in the microcracks.
1 more element
A method of making a sheave for an elevator system, the method comprising:
- applying a filler to a traction sheave having a coating such that the filler infiltrates microcracks in the coating to at least partially fill the microcracks.
Dependencies are inferred from the claim text.