Belt including fibers

Patent metadata

Field	Value
Publication number	US-9676593-B2
Application number	US-201214414633-A
Country	US
Kind code	B2
Filing date	Jul 13, 2012
Priority date	Jul 13, 2012
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A belt for an elevator system and a method for making the same is provided. The belt includes a plurality of tension members that extend along a length of the belt and a jacket. The jacket substantially retains the plurality of tension members. The jacket maintains a desired spacing and alignment of the tension members relative to each other. The jacket includes a plurality of first fibers and a plurality of second fibers. The jacket defines at least one exterior, traction surface of the belt. The first fibers are at least partially disposed between the tension members and the traction surface of the belt. The second fibers are fill fibers. The first fibers have at least one property that distinguishes them from the second fibers.

First claim

What is claimed is:

1. A belt for an elevator system, comprising:
a plurality of tension members that extend along a length of the belt; and
a jacket substantially retaining the plurality of tension members, the jacket comprising a plurality of first fibers, a plurality of second fibers, and a plurality of third fibers, and the jacket defining at least one exterior, traction surface of the belt;
wherein the first fibers are weft fibers that are at least partially disposed between the tension members and the traction surface of the belt;
wherein the second fibers are fill fibers that are at least partially disposed between the tension members; and
wherein the third fibers are warp fibers that are at least partially disposed between the tension members and the traction surface of the belt.

2. The belt of claim 1 , wherein the first fibers have at least one property that distinguishes them from the second fibers, and wherein the at least one property is included in a group of mechanical properties consisting of: tenacity, linear density, linear modulus, durability.

3. The belt of claim 1 , wherein the tenacity or linear density of the first fibers is greater than the tenacity or linear density of the second fibers, respectively.

4. The belt of claim 1 , wherein the first fibers have at least one property that distinguishes them from the second fibers, and wherein the at least one property is the diameter of the first fibers.

5. The belt of claim 1 , wherein the first fibers have at least one property that distinguishes them from the second fibers, and wherein the at least one property provides the belt with a property that is included in a group consisting of: dimensions, density, strength, modulus, traction, durability and performance.

6. The belt of claim 1 , wherein the jacket totally covers the plurality of tension members.

7. The belt of claim 1 , wherein the traction surface of the belt is defined by exposed portions of the first fibers and exposed portions of the second fibers.

8. The belt of claim 2 , wherein a pressure distribution on the traction surface of the belt is substantially uniform when the belt engages a sheave of the elevator system.

9. The belt of claim 1 , wherein an orientation of one of the first fibers or the second fibers relative to the tension members is provided so that a pressure distribution on the traction surface of the belt is substantially uniform when the belt engages a sheave of the elevator system.

10. The belt of claim 1 , wherein the first fibers or the second fibers are yarns.

11. The belt of claim 10 , wherein at least one of the first fibers or the second fibers are made from a material included in a group consisting of: a polyester, a polyamide, an aramid, a polyolefin.

12. The belt of claim 1 , wherein the second fibers extend along the tension member in a lengthwise direction, and are not disposed between the tension members and the traction surface.

13. The belt of claim 5 , wherein the at least one property relates to an exterior surface of the belt.

14. The belt of claim 13 , wherein the exterior surface of the belt is the traction surface of the belt.

15. The belt of claim 13 , wherein the exterior surface of the belt comprises a non-traction surface of the belt.

16. The belt of claim 6 , wherein collectively the first fibers, the second fibers, and the third fibers substantially totally cover the plurality of tension members.

17. The belt of claim 1 , wherein the third fibers are completely disposed between the tension members and the traction surface of the belt.

Assignees

• Zhao Wenping
• Krishnan Gopal R
• Wesson John P
• Otis Elevator Co

Inventors

• Zhao Wenping
• Krishnan Gopal R
• Wesson John P

Classifications

• Y10T29/49826

  Assembling or joining · CPC title

• D07B5/04

  Rope bands · CPC title

• B66B7/06

  Arrangements of ropes or cables · CPC title

• D03D1/0094

  Belts (D03D1/0005 takes precedence) · CPC title

• D10B2331/021

  aromatic polyamides, e.g. aramides · CPC title