Load bearing traction members and method
AssigneeOtis Elevator Company
InventorChen Qian Zhao
Life of this patent
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Abstract
Disclosed is a method of making a load-bearing traction member. According to the method, a composition including a thermoplastic polyurethane and a compound with a plurality of epoxide groups or a compound with a plurality of groups having the formula wherein R1 and R2 are each groups in a polymer backbone or together form a group having the formula ═NR4, wherein R3 and R4 each independently represents an organic group, 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
Claims19
A method of making a load-bearing traction member, comprising heating a composition comprising a thermoplastic polyurethane, and a compound comprising a plurality of epoxide groups or a compound comprising a plurality of groups having the formula
- wherein R1 and R2 are each groups in a polymer backbone or together form a group having the formula ═NR4, wherein R3 and R4 each independently represents an organic group;
- and
- applying the fluid mixture to at least one 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 groups having the formula
- wherein R1 and R2 are each groups in a polymer backbone or together form a group having the formula ═NR4, wherein R3 and R4 each independently represents an organic group.
Dependencies are inferred from the claim text.