Power transmission belt

Patent metadata

Field	Value
Publication number	US-10024389-B2
Application number	US-201615349804-A
Country	US
Kind code	B2
Filing date	Nov 11, 2016
Priority date	May 22, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A frictional transmission belt according to the present disclosure has a belt body wound around a pulley to transmit power. The belt includes a water absorptive fabric covering at least one side of the belt body that contacts with the pulley.

First claim

What is claimed is:

1. A frictional transmission belt having a belt body wound around a pulley to transmit power, wherein
the belt comprises a water absorptive fabric covering at least one side of the belt body that contacts with the pulley,
the water absorptive fabric contains a water absorptive yarn selected from the group consisting of a spun yarn of polyethylene terephthalate, a spun yarn of polyamide, a spun yarn of aramid, or a combination thereof.

2. The frictional transmission belt of claim 1 , wherein
the water absorptive fabric is either a woven fabric or a knit fabric, and
the water absorptive fabric is partially embedded in a rubber composition that makes up the belt body.

3. The frictional transmission belt of claim 1 , wherein
the yarn forming the water absorptive fabric includes a modified cross-section yarn.

4. The frictional transmission belt of claim 1 , wherein
the yarn forming the water absorptive fabric includes a microfiber.

5. The frictional transmission belt of claim 1 , wherein
the yarn forming the water absorptive fabric includes a hollow fiber.

6. The frictional transmission belt of claim 1 , wherein
the belt is produced by:
winding a fabric around a surface of a rubber layer to form the belt body, thereby forming a molded part;
pressing the molded part onto a belt-molding die having ribbed recesses that define the side to contact with the pulley; and
allowing the molded body to crosslink.

7. The frictional transmission belt of claim 1 , wherein
the water absorptive yarn is a covering yarn including a core yarn and a covering fiber, and
the spun yarn is used as the covering yarn.

8. The frictional transmission belt of claim 1 , wherein
the water absorptive fabric has been subjected to RFL treatment so that water absorptiveness by capillarity is maintained.

Assignees

• Bando Chemical Ind

Inventors

• Kim Sungjin
• Umeda Sakae
• Nakamoto Yuji
• Shimono Keiichiro

Classifications

• B29K2105/0836

  Knitted fabrics · CPC title

• B29K2105/24

  crosslinked or vulcanised · CPC title

• F16G5/20 Primary

  with a contact surface of special shape, e.g. toothed · CPC title

• B29D29/08

  Toothed driving belts · CPC title

• B29K2105/16

  Fillers · CPC title