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

Patent metadata

Field	Value
Publication number	US-10974929-B2
Application number	US-201715804742-A
Country	US
Kind code	B2
Filing date	Nov 6, 2017
Priority date	Nov 7, 2016
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

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 belt for an elevator system comprising:
a core;
an elastomeric sheath positioned over the core; and
an elastomer and phosphonate blended bonding agent adhering the core to the sheath;
wherein the elastomer and phosphonate blended bonding agent is mixed with a same resin that forms at least one of the core and the sheath.

2. The belt of claim 1 , wherein the core is 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 belt 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 belt of claim 3 , wherein the 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 are blended in a weight within a range of 0.5% to 50%.

5. The belt of claim 1 , wherein the elastomer and phosphonate blended bonding agent is formed as a tie-layer positioned between the core and the sheath.

6. The belt of claim 5 , wherein:
the tie-layer is extruded onto the core; and
the sheath is extruded onto the tie-layer.

7. The belt of claim 5 , wherein:
the tie-layer is applied by pultrusion onto the core; and
the sheath is applied by pultrusion onto the tie-layer.

8. The belt of claim 1 , wherein the sheath is extruded onto the core.

9. The belt of claim 1 , wherein the sheath is applied by pultrusion onto the core.

10. An elevator system comprising:
an elevator car;
a counterweight; and
a belt coupling the elevator car to the counterweight, the belt comprising:
a core;
an elastomeric sheath positioned over the core; and
an elastomer and phosphonate blended bonding agent adhering the core to the sheath;
wherein the elastomer and phosphonate blended bonding agent is mixed with a same resin that forms at least one of the core and the sheath.

11. The elevator system of claim 10 , wherein the core is 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, and an epoxy thermoset resin composite core.

12. The elevator system of claim 10 , 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.

13. The elevator system of claim 12 , wherein the 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 are blended in a weight within a range of 0.5% to 50%.

14. The elevator system of claim 10 , wherein the elastomer and phosphonate blended bonding agent is formed as a tie-layer positioned between the core and the sheath.

15. The elevator system of claim 14 , wherein:
the tie-layer is extruded onto the core; and
the sheath is extruded onto the tie-layer.

16. The elevator system of claim 14 , wherein:
the tie-layer is applied by pultrusion onto the core; and
the sheath is applied by pultrusion onto the tie-layer.

17. The elevator system of claim 10 , wherein the sheath is extruded onto the core.

18. The elevator system of claim 10 , wherein the sheath is applied by pultrusion onto the core.

Assignees

• Otis Elevator Co

Inventors

• Zafiris Georgios S
• Eastman Scott A

Classifications

• F16G1/16

  with reinforcement bonded by the plastic material {(making thereof B32B)} · CPC title

• D07B5/006

  by the properties of an outer surface polymeric coating · CPC title

• D07B1/22

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

• D07B1/162

  characterised by a plastic or rubber enveloping sheathing · CPC title

• D07B2501/2007

  Elevators · CPC title