Hybrid fabric-laminated belt for elevator system

Patent metadata

Field	Value
Publication number	US-10669127-B2
Application number	US-201715839206-A
Country	US
Kind code	B2
Filing date	Dec 12, 2017
Priority date	Dec 12, 2016
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A traction-driven belt for moving a load includes a plurality of tension elements extending longitudinally along a length of the belt, and a plurality of yarns interlaced with the plurality of tension elements forming a composite belt structure. A laminate material layer is affixed to at least one surface of the composite belt structure to improve one or more performance properties of the composite belt structure. A belt for suspending and/or driving an elevator car includes a plurality of tension elements extending longitudinally along a length of the belt, and a plurality of yarns interlaced with the plurality of tension elements forming a composite belt structure. A sheath encloses at least one tension element of the plurality of tension elements. The sheath is formed from a flowable material to bind the tension element to the plurality of yarns, and/or adjacent tension elements.

First claim

What is claimed is:

1. A traction-driven belt for movement of a load, comprising:
a plurality of tension elements extending longitudinally along a length of the belt;
a plurality of yarns interlaced with the plurality of tension elements forming a composite belt structure; and
a laminate material layer comprising one or more of a woven fabric, a nonwoven fabric, a polymer film, a polymer-infiltrated fabric, or a carbon fiber composite, the laminate material layer being affixed to at least one surface of the composite belt structure to improve one or more performance properties of the composite belt structure;
wherein a first tension element of the plurality of tension elements is enclosed in a first sheath formed from a first sheath material, and a second tension element of the plurality of tension elements is enclosed in a second sheath formed from a second sheath material different from the first sheath material, the second tension element not enclosed in the first sheath.

2. The belt of claim 1 , wherein further comprising a binder layer interposed between the laminate material layer and the at least one surface to adhere the laminate material layer to the at least one surface.

3. The belt of claim 2 , wherein the binder layer includes one or more of a thermoplastic urethane, a hot melt adhesive, a two-part urethane or a contact cement.

4. The belt of claim 1 , wherein one or more of the plurality of yarns include a fusible material to bind the laminate material layer to the composite belt structure.

5. The belt of claim 4 , wherein the yarns include a first yarn material which is fusible and a second yarn material which is not fusible.

6. The belt of claim 1 , wherein the laminate material layer is affixed to a traction side of the composite belt structure.

7. The belt of claim 1 , wherein the one or more performance properties includes traction, wear resistance or noise resistance.

8. A traction-driven belt for moving a load, comprising:
a plurality of tension elements extending longitudinally along a length of the belt;
a plurality of yarns interlaced with the plurality of tension elements forming a composite belt structure; and
a sheath enclosing at least one tension element of the plurality of tension elements, the sheath formed from a flowable material to bind the tension element to the plurality of yarns, and/or adjacent tension elements;
wherein a first tension element is enclosed in a first sheath formed from a first sheath material, and a second tension element is enclosed in a second sheath formed from a second sheath material different from the first sheath material, the second tension element not enclosed in the first sheath.

9. The belt of claim 8 , wherein the sheath is configured to improve one or more of wear resistance, noise resistance, traction or fire performance of the belt.

10. The belt of claim 8 , further comprising a laminate material layer affixed to at least one surface of the composite belt structure to improve one or more performance properties of the composite belt structure.

11. The belt of claim 10 , further comprising a binder layer interposed between the laminate material layer and the at least one surface to adhere the laminate material layer to the at least one surface.

12. The belt of claim 10 , wherein the laminate material layer includes one or more of a woven or nonwoven fabric, a polymer film, a polymer-infiltrated fabric, or a carbon fiber composite.

13. The belt of claim 10 , wherein the laminate material layer is affixed to a traction side of the composite belt structure.

14. The belt of claim 8 , wherein one or more of the plurality of yarns include a fusible material to improve adhesion in the belt.

15. The belt of claim 14 , wherein the yarns include a first yarn material which is fusible and a second yarn material which is not fusible.

Assignees

• Otis Elevator Co

Inventors

• Eastman Scott Alan
• Mosher Daniel A
• Humbert Michael Paul
• Gronda Steven W
• Zhao Wenping

Classifications

• B32B27/288

  comprising polyketones · CPC title

• B32B27/308

  comprising acrylic (co)polymers · CPC title

• B66B7/062 Primary

  Belts · CPC title

• B32B2262/106

  Carbon fibres, e.g. graphite fibres · CPC title

• B32B5/28

  impregnated with or embedded in a plastic substance {(not used)} · CPC title