Load bearing member for an elevator system having an elastomer and phosphonate blended bonding agent

Patent metadata

Field	Value
Publication number	US-11518652-B2
Application number	US-202117200248-A
Country	US
Kind code	B2
Filing date	Mar 12, 2021
Priority date	Nov 7, 2016
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A belt for an elevator system is provided having a core and an elastomeric sheath positioned over the core. An elastomer and phosphonate blended bonding agent adheres the core to the sheath.

First claim

What is claimed is:

1. A method of forming a belt for an elevator system, the method comprising:
providing a core;
positioning an elastomeric sheath over the core; and
adhering the core to the sheath with an elastomer and phosphonate blended bonding agent;
wherein the elastomer and phosphate blended bonding agent is mixed with a same resin that forms at least one of the core and the sheath.

2. The method of claim 1 , wherein providing a core includes providing at least one of a carbon fiber thermoset resin composite core, an aramid fiber thermoset resin composite core, a glass fiber thermoset resin composite core, an epoxy thermoset resin composite core, and combinations thereof.

3. The method of claim 1 , wherein the elastomer and phosphonate blended bonding agent includes at least one of poly-phosphonate homopolymer, phosphonate oligomer, phosphonate carbonate co-oligomer, poly-phosphonate-polycarbonate copolymer, phosphonate ester co-oligomer, poly-phosphonate-polyester copolymer, and blends thereof.

4. The method of claim 3 further comprising blending the at least one of poly- phosphonate homopolymer, phosphonate oligomer, phosphonate carbonate co-oligomer, poly- phosphonate-polycarbonate copolymer, phosphonate ester co-oligomer, and poly-phosphonate- polyester copolymer in a weight within a range of 0.5% to 50%.

5. The method of claim 1 further comprising forming the elastomer and phosphonate blended bonding agent as a tie-layer positioned between the core and the sheath.

6. The method of claim 1 further comprising at least one of:
mixing the elastomer and phosphonate blended bonding agent with a resin that forms the core; and
mixing the elastomer and phosphonate blended bonding agent with a resin that forms the sheath.

Assignees

• Otis Elevator Co

Inventors

• Zafiris Georgios S
• Eastman Scott A

Classifications

• D07B1/22

  Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes · CPC title

• D07B2501/2007

  Elevators · CPC title

• D07B2205/3007

  Carbon · CPC title

• B66B7/062 Primary

  Belts · CPC title

• B29D29/00

  Producing belts or bands · CPC title