Fiber reinforced elevator belt and method of manufacture

Patent metadata

Field	Value
Publication number	US-11040856-B2
Application number	US-202016893878-A
Country	US
Kind code	B2
Filing date	Jun 5, 2020
Priority date	Mar 6, 2014
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

A belt for suspending and/or driving an elevator car extending longitudinally along a length of the belt. An inner belt layer formed from a first material is bonded to the plurality of tension elements at a first side of the belt. The inner belt layer forms an inner belt surface interactive with a traction sheave of an elevator system. An outer belt layer formed from a second material is bonded to the plurality of tension elements at a second side of the belt. The plurality of tension elements are located between the first side and the second side.

First claim

What is claimed is:

1. A belt for suspending and/or driving an elevator car, comprising:
a plurality of tension elements extending longitudinally along a length of the belt;
an inner belt layer formed from a first material bonded to the plurality of tension elements at a first side of the belt, the inner belt layer forming an inner belt surface interactive with a traction sheave of an elevator system;
an outer belt layer formed from a second material bonded to the plurality of tension elements at a second side of the belt, the plurality of tension elements disposed between the first side and the second side; and
a middle belt layer disposed between the plurality of tension members and the outer belt layer.

2. The belt of claim 1 , wherein the first material is different from the second material.

3. The belt of claim 1 , wherein the tension elements comprise steel cords, carbon fiber, polymer fiber and/or glass fiber.

4. The belt of claim 1 , wherein the plurality of tension elements are at least partially enclosed in a matrix material.

5. The belt of claim 1 , wherein the inner belt layer comprises a tape including the first material.

6. The belt of claim 1 , wherein the outer belt layer comprises a tape including the second material.

7. The belt of claim 1 , wherein the inner belt layer and/or the outer belt layer are thermally bonded to the plurality of tension elements.

8. The belt of claim 1 , wherein the first material is one of high performance polymer fibers including highly oriented thermoplastics, aramids, aromatic polyethers or polyimides to enhance abrasive and wear resistance of the inner surface.

9. The belt of claim 1 , wherein the second material is selected to enhance one or more of moisture or UV resistance, fire resistance or vibration damping of the belt.

10. A method of forming a belt for suspending and/or driving an elevator car comprising:
arranging a plurality of tension elements to extend longitudinally along a belt length;
applying an inner belt layer comprising a first material to a first side of the plurality of tension elements to form an inner belt surface;
applying an outer belt layer comprising a second material different from the first material to a second side of the plurality of tension elements forming an outer belt surface, the plurality of tension elements disposed between the inner belt surface and the outer belt surface; and
positioning a middle belt layer between the plurality of tension members and the outer belt layer.

11. The method of claim 10 , further comprising at least partially enclosing the plurality of tension elements in a matrix material prior to applying the inner layer and/or the outer layer.

12. The method of claim 10 , wherein the tension elements comprise steel cords, carbon fiber, polymer fiber and/or glass fiber.

13. The method of claim 10 , wherein the outer belt layer comprises a tape including the second material.

14. The method of claim 10 , wherein the inner belt layer and/or the outer belt layer are thermally bonded to the plurality of tension elements.

Assignees

• Otis Elevator Co

Inventors

• Zhao Wenping
• Wesson John P
• Mosher Daniel A
• Eastman Scott Alan
• Humbert Michael Paul
• Thompson Mark Steven
• Amis Eric Jay

Classifications

• B66B9/00

  Kinds or types of lifts in, or associated with, buildings or other structures (characterised by control systems B66B1/00; apparatus for raising or lowering persons on stages of theatres A63J5/12) · CPC title

• B29D29/00

  Producing belts or bands · CPC title

• B66B7/062 Primary

  Belts · CPC title

• B66B7/1215

  specially adapted for ropes or cables · CPC title