Bias tooth fabric and toothed power transmission belt

Patent metadata

Field	Value
Publication number	US-2019178338-A1
Application number	US-201715841193-A
Country	US
Kind code	A1
Filing date	Dec 13, 2017
Priority date	Dec 13, 2017
Publication date	Jun 13, 2019
Grant date	—

Abstract

A cover fabric for a power transmission belt, the fabric woven from warp yarns and weft yarns; the warp yarns and weft yarns each plied from a first filament yarn and a second filament yarn; the first filament yarn comprising higher tensile strength fibers than the second filament yarn; and the fabric woven in a modified twill pattern. A toothed belt with the cover fabric on the teeth, oriented on a bias, with the fabric having a bias angle less than 90°.

First claim

What is claimed is:

1 . A cover fabric for a power transmission belt, said fabric woven from warp yarns and weft yarns; said warp yarns and weft yarns each plied from a first filament yarn and a second filament yarn; said first filament yarn comprising higher tensile strength fibers than said second filament yarn; and said fabric woven in a modified twill pattern.

2 . The cover fabric of claim 1 wherein the modified twill pattern comprises one or more rows of 1/1 or 2/1 plain weave alternating with one or more rows of a 1/3 or 1/4 or 2/4 satin weave.

3 . The cover fabric of claim 1 wherein said warp yarns and weft yarns are each plied with a final twist in the range of 1.0 to 5.0 twists per cm.

4 . The cover fabric of claim 1 wherein said warp yarns and said weft yarns have the same composition.

5 . The cover fabric of claim 3 wherein said first filament yarn comprises aramid fibers and said second filament yarn comprises nylon fibers.

6 . The cover fabric of claim 4 wherein said first filament yarn makes up more than half of the total denier of the warp and weft yarns.

7 . The cover fabric of claim 1 oriented on a bias with bias angle less than 90 degrees.

8 . The cover fabric of claim 1 comprising a relatively smooth side and a relatively rough side.

9 . The cover fabric of claim 1 oriented on a bias with bias angle of about 80 degrees.

10 . A toothed power transmission belt comprising a bias fabric covering said teeth; wherein said bias fabric is woven from nonstretchable warp yarns and weft yarns oriented at a bias angle of less than 80°; said warp yarns and weft yarns each plied from a first filament yarn and a second filament yarn; said first filament yarn having a higher tensile strength than said second filament yarn; and said fabric woven in a modified twill pattern.

11 . The belt of claim 10 wherein the modified twill pattern comprises one or more rows of 1/1 or 2/1 plain weave alternating with one or more rows of a 1/3 or 1/4 or 2/4 satin weave.

12 . The belt of claim 10 wherein the bias fabric is woven with alternating rows of a plain weave and a satin weave.

13 . The belt of claim 10 wherein said warp yarns and weft yarns are each plied with a final twist in the range of 1.0 to 5.0 twists per cm.

14 . The belt of claim 10 wherein said warp yarns and said weft yarns have the same composition.

15 . The belt of claim 10 wherein said first filament yarn comprises aramid fibers and said second filament yarn comprises nylon fibers.

16 . The belt of claim 15 wherein said first filament yarn makes up more than half of the total denier of the warp and weft yarns.

17 . The belt of claim 10 oriented on a bias with bias angle less than 90 degrees.

18 . The belt of claim 10 comprising a relatively smooth side and a relatively rough side.

Assignees

• Gates Corp

Inventors

• Gao Min
• Blunsden Nigel Peter
• Chen Guogong
• Wu Shawn Xiang
• DECKER Cynthia

Classifications

• F16G1/10

  with textile reinforcement · CPC title

• D10B2331/021

  aromatic polyamides, e.g. aramides · CPC title

• D03D13/002

  With diagonal warps or wefts · CPC title

• D03D1/0041

  Cut or abrasion resistant · CPC title

• D10B2505/00

  Industrial · CPC title