Elevator system belt

Patent metadata

Field	Value
Publication number	US-11247871-B2
Application number	US-201816188414-A
Country	US
Kind code	B2
Filing date	Nov 13, 2018
Priority date	Nov 10, 2017
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A belt for an elevator system includes a plurality of tension members arranged along a belt width and extending longitudinally along a length of the belt. Each tension member includes a plurality of basalt fibers to enhance temperature resistance of the tension member. A jacket material at least partially encapsulates the plurality of tension members. 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 plurality of tension members arranged along a belt width and extending longitudinally along a length of the belt. Each tension member includes a plurality of basalt fibers to enhance temperature resistance of the tension member. A jacket material at least partially encapsulates the plurality of tension members.

First claim

What is claimed is:

1. A belt for an elevator system, comprising:
a plurality of tension members arranged along a belt width and extending longitudinally along a length of the belt, each tension member including a plurality of basalt fibers to enhance temperature resistance of the tension member; and
a jacket material at least partially encapsulating the plurality of tension members;
wherein a tension member of the plurality of tension members includes:
a cord; and
a basalt fiber layer wrapped around the cord; and

wherein the cord is formed from a plurality of steel wires formed into a plurality of strands which are formed into the cord.

2. The belt of claim 1 , wherein the plurality of tension members are formed from a plurality of dry basalt fibers.

3. The belt of claim 1 , wherein the jacket material is configured to provide a UL94 fire-resistance rating of V0 or better.

4. 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 arranged along a belt width and extending longitudinally along a length of the belt, each tension member including a plurality of basalt fibers to enhance temperature resistance of the tension member; and
a jacket material at least partially encapsulating the plurality of tension members;
wherein a tension member of the plurality of tension members includes:
a cord; and
a basalt fiber layer wrapped around the cord; and

wherein the cord is formed from a plurality of steel wires formed into a plurality of strands which are formed into the cord.

5. The elevator system of claim 4 , wherein the plurality of tension members are formed from a plurality of dry basalt fibers.

6. The elevator system of claim 4 , wherein the jacket material is configured to provide a UL94 fire-resistance rating of V0 or better.

Assignees

• Otis Elevator Co

Inventors

• Guilani Brad

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

• D07B2501/2007

  Elevators · CPC title

• D07B1/22

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

• D02G3/48

  Tyre cords {(tyre reinforcements B60C9/00; metal cords for reinforcing rubber or plastic articles D07B1/0606)} · CPC title

• B66B7/062 Primary

  Belts · CPC title