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US 2019/0161322 A1Published application
Load bearing traction member and method
AssigneeOtis Elevator Company
InventorChen Qian Zhao
Life of this patent
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Abstract
A method is disclosed of making a load-bearing traction member. According to the method, a composition including a thermoplastic polyurethane and a blocked isocyanate compound is heated to a fluid state and applied to at least one tension member, and solidified to form a polymer jacket around at least one tension member.
Claims18
A method of making a load-bearing traction member, comprising heating a composition comprising a thermoplastic polyurethane and a compound comprising a plurality of blocked isocyanate groups to a fluid state;
- and
- applying the fluid composition to at least one tension member, and solidifying the fluid composition to form a polymer jacket around the at least one tension member.
A load bearing traction member, comprising
- one or more tension members;
- and
- a polymer jacket comprising the reaction product of a composition comprising a thermoplastic polyurethane and a compound comprising a plurality of blocked isocyanate groups.
Dependencies are inferred from the claim text.