Woven fabric belt

• US 4,891,040 A
• Filed: 07/20/1988
• Issued: 01/02/1990
• Est. Priority Date: 07/05/1982
• Status: Expired due to Fees

• Current Assignee: Mitsuboshi Belting Limited
• Original Assignee: Mitsuboshi Belting Limited
• Inventors: Nakagawa, Fumihito, Mizuno, Takahide, Okawa, Hiroyuki, Nagai, Takaji
• Primary Examiner(s): Bui, Thuy M.
• Application Number:
  US07/221,523
• Time in Patent Office: 531 Days
• Field of Search: 474/265-268, 139/426 R, 139/426 TW, 139/421, 139/422, 139/423, 57/238, 57/225, 428/257, 428/258, 428/259, 428/231, 198/846
• US Class Current: 474/267
• CPC Class Codes: B65G 15/34 with reinforcing layers, e.g. of fabric
• CPC Class Codes: B65G 2201/06 Articles and bulk
• CPC Class Codes: D02G 3/32 Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
• CPC Class Codes: D02G 3/447 Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement
• CPC Class Codes: D03D 15/56 elastic
• CPC Class Codes: D03D 3/04 Endless fabrics
• CPC Class Codes: F16G 5/08 with textile reinforcement

Abstract

Woven fabric for use in a power transmission belt. The fabric has a warp of shrinkable yarns obtained by aligning and twisting individual shrinkable mixed twisted yarns. Alternatively, the warp may be formed of more than two mixed twisted yarns mixed in a ratio of greater than 1:15 of elastic yarns formed of polyurethane fibrous yarns oriented at more than 10%, or rubber yarns and other fibrous yarns. The weft is made alternatively of twisted yarns or monofilament yarns. The fabric has excellent shrinkability, wear resistance, and crack resistance.

Claims

1. A power transmission belt comprising:

a load carrying rubber section;

a tooth rubber section on said load carrying section defining a toothed surface; and

a woven belt fabric on said toothed surface including

warps of shrinkable yarns obtained by aligning and twisting sole shrinkable mixed twisted yarns including elastic yarn elongated more than 10% and comprising more than approximately 1/15 of said Yarns, and

wefts made of twisted yarns.

7. The woven belt fabric of claims 1, 2, 3, 4, 5 or 6 wherein said fabric comprises a fabric selected from the group consisting of plain, twill and satin fabrics.

10. The woven belt fabric of claims 1, 2 or 3 wherein the twisted yarn of said weft is a twisted yarn selected from the group consisting of blended yarn, or mixed twisted yarn made of a material selected from the group consisting of nylon, polyester, vinylon, rayon, aromatic polyamide and cotton.

12. The woven belt fabric of claims 1, 2 or 3 wherein the wefts are formed of shrinkable yarns.

13. The woven belt fabric of claims 1, 2 or 3 wherein the wefts are formed of shrinkable yarns similar to said shrinkable warp yarns.

14. The woven belt fabric of claims 1, 2 or 3 wherein the wefts are formed of shrinkable yarns and wherein said fabric comprises a fabric selected from the group consisting of plain, twill and satin fabrics.

2. A power transmission belt comprising:

a load carrying rubber section;

a tooth rubber section on said load carrying section defining a toothed surface; and

a woven belt fabric on said toothed surface including

warps of shrinkable yarns obtained by aligning and twisting more than two mixed twisted yarns mixed at a ratio of greater than 1;

15 of elastic yarns made of polyurethane fibrous yarns oriented at a tension of more than 10% and other fibrous yarns, and

wefts made of twisted yarns.

8. The woven belt fabric of claims 2, 3 5 or 6 wherein said other fibrous yarn of said warp is formed of a yarn selected from the group consisting of filament yarn, and spun yarn made of a synthetic resin selected from the group of synthetic resins consisting of nylon, polyester, vinylon, rayon, and aromatic polyamide.

9. The woven belt fabric of claims 2, 3, 5 or 6 wherein the other fibrous yarn of said warp is made of crimped spun yarn.

3. A power transmission belt comprising:

a load carrying rubber section;

a tooth rubber section on said load carrying section defining a toothed surface; and

a woven belt fabric on said toothed surface including

warps of shrinkable yarns obtained by aligning and twisting more than two mixed twisted yarns mixed at a ratio of greater than 1;

15 of rubber yarns and other fibrous yarns, and

wefts made of twisted yarns.

4. A power transmission belt comprising:

a load carrying rubber section;

a tooth rubber section on said load carrying section defining a toothed surface; and

a woven belt fabric on said toothed surface including

warps of shrinkable yarns obtained by aligning and twisting sole shrinkable mixed twisted yarns including an elastic yarn elongated more than 10% and comprising more than approximately 1/15 of said warp yarns, amd

wefts made of monofilament yarns.

11. The woven belt fabric of claims 4, 5 or 6 wherein the monofilament of said weft is a monofilament yarn selected from the group consisting of nylon and polyester.

5. A power transmission belt comprising:

a load carrying rubber section;

a tooth rubber section on said load carrying section defining a toothed surface; and

a woven belt fabric on said toothed surface including

warps of shrinkable yarns obtained by aligning and twisting more than two mixed twisted yarns mixed at a ratio of greater than 1;

15 of elastic yarns made of polyurethane fibrous yarns oriented at a tension of more than 10% and other fibrous yarns, and

wefts made of monofilament yarns.

6. A power transmission belt comprising:

a load carrying rubber section;

a tooth rubber section on said load carrying section defining a toothed surface; and

a woven belt fabric on said toothed surface including

warps of shrinkable yarns obtained by aligning and twisting more than two mixed twisted yarns mixed at a ratio of greater than 1;

15 of rubber yarns and other fibrous yarns, and

wefts made of monofilament yarns.