Elevator belt and method of manufacture

Patent metadata

Field	Value
Publication number	US-11498808-B2
Application number	US-202017017231-A
Country	US
Kind code	B2
Filing date	Sep 10, 2020
Priority date	Feb 18, 2014
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

A belt for suspending and/or driving an elevator car includes a plurality of tension elements extending along a length of the belt and a plurality of belt fibers transverse to the plurality of tension elements and interlaced therewith. The belt fibers define at least one traction surface of the belt. An edge fiber is located at a lateral end of the belt transverse to and secured to the plurality of belt fibers to secure the belt fibers in a selected position.

First claim

What is claimed is:

1. A method of forming a belt for suspending and/or driving an elevator car, comprising:
arranging a plurality of metallic tension elements along a length of the belt, defining a length of the belt;
braiding a plurality of non-metallic belt fibers together with the plurality of tension elements to form a braided structure, the plurality of belt fibers extending transverse to the plurality of tension elements;
braiding one or more non-metallic edge fibers into the plurality of belt fibers at a lateral side of the braided structure; and
securing the one or more edge fibers to the plurality of belt fibers to retain the belt fibers in a selected position;
wherein the one or more edge fibers include a thermally-activated material, which when set secures the one or more edge fibers to the plurality of belt fibers, the one or more edge fibers disposed parallel to the plurality of tension elements, the one or more non-metallic edge fibers mechanically closed around the plurality of belt fibers.

2. The method of claim 1 , further comprising heating the one or more edge fibers to secure the edge fiber to the plurality of belt fibers.

3. The method of claim 1 , further comprising braiding one or more edge fibers into the plurality of belt fibers at each lateral side of the braided structure.

4. The method of claim 1 , wherein the one or more edge fibers extend parallel to the plurality of tension elements.

5. The method of claim 1 , wherein the plurality of belt fibers are transverse to the plurality of tension elements at a non-perpendicular angle.

6. The method of claim 5 , wherein the angle is forty-five degrees.

7. The method of claim 1 , A method of forming a belt for suspending and/or driving an elevator car, comprising:
arranging a plurality of tension elements along a length of the belt, defining a length of the belt;
braiding a plurality of belt fibers together with the plurality of tension elements to form a braided structure, the plurality of belt fibers extending transverse to the plurality of tension elements;
braiding one or more edge fibers into the plurality of belt fibers at a lateral side of the braided structure; and
securing the one or more edge fibers to the plurality of belt fibers to retain the belt fibers in a selected position; and
braiding a band of selvage fibers into the braided structure between adjacent tension elements of the plurality of tension elements.

8. The method of claim 7 , further comprising securing each selvage fiber band to the plurality of belt fibers.

9. The method of claim 8 , further comprising separating the braided structure into two or more braided structures at the selvage fiber bands.

Assignees

• Otis Elevator Co

Inventors

• Zhao Wenping
• Wesson John P
• Mosher Daniel A
• Eastman Scott Alan

Classifications

• B66B7/062 Primary

  Belts · CPC title

• D04C1/06

  Braid or lace serving particular purposes · CPC title

• B29L2031/7092

  Conveyor belts · CPC title

• D07B5/045

  Belts comprising additional filaments for laterally interconnected load bearing members · CPC title

• B29C65/48

  using adhesives {, i.e. using supplementary joining material; solvent bonding} · CPC title