Elevator system belt with fabric tension member

Patent metadata

Field	Value
Publication number	US-10604379-B2
Application number	US-201815958698-A
Country	US
Kind code	B2
Filing date	Apr 20, 2018
Priority date	Apr 20, 2017
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

A belt for an elevator system includes a tension member extending at least partially across a belt width and extending longitudinally along a length of the belt, the tension member formed at least partially from a plurality of aromatic polyester based fibers, and a jacket material at least partially encapsulating the tension member. An elevator system includes a hoistway, an elevator car located in the hoistway and movable therein, and a belt operably connected to the elevator car to suspend and/or drive the elevator car along the hoistway. The belt includes a tension member extending at least partially across a belt width and extending longitudinally along a length of the belt. The tension member is formed at least partially from a plurality of aromatic polyester based fibers. A jacket material at least partially encapsulates the tension member.

First claim

What is claimed is:

1. A belt for an elevator system, comprising:
a plurality of tension members extending partially across a belt width and extending longitudinally along a length of the belt, each tension member of the plurality of tension members formed at least partially from a plurality of aromatic polyester based fibers, the plurality of aromatic based fibers formed into a fabric, tension member including a plurality of layers of the fabric stacked in a belt thickness direction; and
a jacket material at least partially encapsulating the plurality of tension members;
wherein the plurality of tension members are arrayed across the belt width direction, the jacket material further disposed between adjacent tension members of the plurality of tension members in the belt width direction.

2. The belt of claim 1 , wherein the fabric further includes carbon fibers, glass fibers, aramid fibers, ultrahigh molecular weight polyethylene, ultrahigh molecular weight polypropylene, polybenzoxazole fiber or nylon formed as part of the fabric including a plurality of aromatic polyester based fibers.

3. The belt of claim 1 , wherein the tension member includes:
a cord including a plurality of load carrying fibers; and
at least one layer of aromatic polyester based fibers at least partially surrounding the cord.

4. The belt of claim 3 , wherein the load carrying fibers are one or more of carbon, glass, aramid, nylon, and polymer fibers.

5. The belt of claim 3 , wherein the plurality of load carrying fibers are disposed in a matrix material.

6. The belt of claim 1 , wherein the jacket materials are selected from the group consisting of polyurethanes, polyesters, ethylene propylene diene elastomer, chloroprene, chlorosulfonyl polyethylene, ethylene vinyl acetate, polyamide, polypropylene, butyl rubber, acrylonitrile butadiene rubber, styrene butadiene rubber, acrylic elastomer, fluoroelastomer, silicone elastomer, polyolefin elastomer, styrene block and diene elastomer, natural rubber and any combination of at least of two compound.

7. An elevator system, comprising:
a hoistway;
an elevator car disposed in the hoistway and movable therein;
a belt operably connected to the elevator car to suspend and/or drive the elevator car along the hoistway, the belt including:
a plurality of tension members extending partially across a belt width and extending longitudinally along a length of the belt, each tension member of the plurality of tension members formed at least partially from a plurality of aromatic polyester based fibers, the plurality of aromatic based fibers formed into a fabric, tension member including a plurality of layers of the fabric stacked in a belt thickness direction; and
a jacket material at least partially encapsulating the plurality of tension members;
wherein the plurality of tension members are arrayed across the belt width direction, the jacket material further disposed between adjacent tension members of the plurality of tension members in the belt width direction.

8. The elevator system of claim 7 , wherein the fabric further includes carbon fibers, glass fibers, aramid fibers, ultrahigh molecular weight polyethylene, ultrahigh molecular weight polypropylene, polybenzoxazole fiber or nylon formed as part of the fabric including a plurality of aromatic polyester based fibers.

9. The elevator system of claim 7 , wherein the tension member includes:
a cord including a plurality of load carrying fibers; and
at least one layer of aromatic polyester based fibers at least partially surrounding the cord.

10. The elevator system of claim 9 , wherein the load carrying fibers are one or more of carbon, glass, aramid, nylon, and polymer fibers.

11. The elevator system of claim 9 , wherein the plurality of load carrying fibers are disposed in a matrix material.

Assignees

• Otis Elevator Co

Inventors

• Zhao Chen Qian

Classifications

• D07B2501/2007

  Elevators · CPC title

• D07B1/22

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

• B66B7/062 Primary

  Belts · CPC title

• D07B1/162

  characterised by a plastic or rubber enveloping sheathing · CPC title

• D07B2201/2083

  Jackets or coverings · CPC title