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US 12,655,581 B2Granted
Elevator suspension member with protective material
AssigneeOtis Elevator Company
InventorBardia Guilani
Life of this patent
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Abstract
An assembly and method includes selecting a jacket material for a jacket that encases a plurality of tension members, selecting a protective material for the jacket, and covering only pre-identified portions of the jacket with the protective material.
Claims12
An assembly comprising:
- at least one suspension member that supports an elevator car and facilitates movement of the elevator car within a hoistway;
- a jacket that encases the at least one suspension member, wherein the jacket comprises a first type of material;
- protective material that covers only pre-identified portions of the jacket, wherein the protective material comprises a second type of material different than the first type of material, and wherein the protective material comprises a layer of material that extends from one side of the at least one suspension member to an opposite side of the at least one suspension member;
- wherein the first type of material comprises a first thermoplastic polyurethane elastomer having at least a first characteristic;
- wherein the protective material comprises a cold temperature resistant jacket material, and wherein the cold temperature resistant jacket material comprises a second thermoplastic polyurethane elastomer having at least a second characteristic different than the first characteristic;
- wherein the cold temperature resistant jacket material comprises material suitable for temperatures at freezing or below −30° C.;
- and
- wherein the first characteristic comprises a first glass transition temperature and the second characteristic comprises a second glass transition temperature that is less than the first glass transition temperature.
5 more elements
A method comprising:
- selecting a jacket material for a jacket that encases a plurality of tension members to provide a suspension member;
- selecting a protective material for the jacket;
- covering only pre-identified portions of the jacket with the protective material by applying the protective material as a layer of material that extends from one side of the suspension member to an opposite side of the suspension member;
- wherein the protective material comprises a cold temperature jacket material suitable for temperatures at freezing or below;
- wherein the jacket material comprises a first thermoplastic polyurethane elastomer having at least a first characteristic and the cold temperature jacket material comprises a second thermoplastic polyurethane elastomer having at least a second characteristic different than the first characteristic;
- and
- wherein the first characteristic comprises a first glass transition temperature and the second characteristic comprises a second glass transition temperature that is less than the first glass transition temperature.
4 more elements
Dependencies are inferred from the claim text.