Elevator system belt

Patent metadata

Field	Value
Publication number	US-9663328-B2
Application number	US-201114357367-A
Country	US
Kind code	B2
Filing date	Nov 10, 2011
Priority date	Nov 10, 2011
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A belt for suspending and/or driving an elevator car includes a plurality of wires arranged into a plurality of cords. The plurality of cords includes one or more inner cords located at an innermost portion of the belt relative to a lateral end of the belt and one or more outer cords located laterally outboard of the one or more inner cords. The one or more outer cords have a construction distinct from the one or more inner cords. A jacket substantially retains the plurality of cords.

First claim

The invention claimed is:

1. A belt for suspending and driving an elevator car, comprising:
a plurality of cords, each cord of the plurality of cords formed from a plurality of wires and configured for suspending and/or driving the elevator car, the plurality of cords including one or more inner cords disposed at an innermost portion of the belt relative to a lateral end of the belt and one or more outer cords disposed laterally outboard of the one or more inner cords, the one or more outer cords having a construction distinct from the one or more inner cords such that the one or more outer cords have an outer cord flexibility greater than an inner cord flexibility of the one or more inner cords; and
a jacket substantially retaining the plurality of cords;
wherein the different construction of the one or more outer cords includes the outer cords being formed from wires of a first diameter, different than a second diameter of wires utilized to form the one or more inner cords.

2. The belt of claim 1 , wherein the plurality of wires in the one or more outer cords are formed into a plurality of strands.

3. The belt of claim 2 , wherein an outer cord of the one or more outer cords includes a core surrounded by the plurality of strands.

4. The belt of claim 3 , wherein the core of each of the outer cords is formed of a different material than a core of each of the inner cords.

5. The belt of claim 4 , wherein the core of each outer cord is non-metallic.

6. The belt of claim 1 , wherein the one or more outer cords comprise up to about 50% of a total number of cords of the belt.

7. The belt of claim 1 , wherein the one or more outer cords comprise two cords of a multi-cord belt.

8. The belt of claim 1 , wherein the plurality of wires of the outer cords have a lay length that is less than a lay length of the plurality of wires of the inner cords.

9. The belt of claim 1 , wherein the belt construction is substantially symmetrically about a lateral center of the belt.

10. A belt and sheave combination for an elevator system comprising:
an elevator car;
one or more sheaves; and
one or more belts operably connected to the car and interactive with the one or more sheaves for suspending and driving the elevator car, each belt of the one or more belts including:
a plurality of cords, each cord of the plurality of cords formed from a plurality of wires, the plurality of cords including one or more inner cords disposed at an innermost portion of the belt relative to a lateral end of the belt and one or more outer cords disposed laterally outboard of the one or more inner cords, the one or more outer cords having a construction distinct from the one or more inner cords such that the one or more outer cords have an outer cord flexibility greater than an inner cord flexibility of the one or more inner cords; and
a jacket substantially retaining the plurality of cords;
wherein the different construction of the one or more outer cords includes the outer cords being formed from wires of a first diameter, different than a second diameter of wires utilized to form the one or more inner cords.

11. The combination of claim 10 , wherein at least one sheave of the one or more sheaves includes a convex crown along an axis of rotation.

12. The combination of claim 10 , wherein the plurality of wires in the one or more outer cords are formed into a plurality of strands.

13. The combination of claim 12 , wherein a cord of the one or more outer cords includes a core surrounded by the plurality of strands.

14. The combination of claim 13 , wherein the core of each of the outer cords is formed of a different material than a core of each of the inner cords.

15. The combination of claim 14 , wherein the core of each outer cord is non-metallic.

16. The combination of claim 10 , wherein the one or more outer cords comprise about 50% of a total number of cords of the belt.

17. The combination of claim 10 , wherein the one or more outer cords comprise two cords of a multi-cord belt.

Assignees

• Guilani Brad
• Thompson Mark Steven
• Martin Kyle B
• Yang Hong
• Keyo Peter
• Mckee David Wayne
• Gottlieb Russell Bruce
• Otis Elevator Co

Inventors

• Guilani Brad
• Thompson Mark Steven
• Martin Kyle B
• Yang Hong
• Keyo Peter
• Mckee David Wayne
• Gottlieb Russell Bruce

Classifications

• D07B1/06

  Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core · CPC title

• D07B2501/2007

  Elevators · CPC title

• B66B7/062 Primary

  Belts · CPC title

• D07B2201/1016

  characterised by the use of different strands · CPC title

• D07B1/22

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