公开(公告)号：US20230141466A1

公开(公告)日：2023-05-11

申请号：US18090338

申请日：2022-12-28

Applicant: BANDO CHEMICAL INDUSTRIES, LTD.

Inventor： Kazuyuki TSUBAKINO

IPC: F16G1/28 ,  F16H7/02 ,  F16G1/10 ,  F16G1/16 ,  D02G3/16 ,  D02G3/26 ,  D02G3/44

CPC classification number: F16G1/28 ,  F16H7/023 ,  F16G1/10 ,  F16G1/16 ,  D02G3/16 ,  D02G3/26 ,  D02G3/447 ,  D10B2101/12 ,  D10B2505/02

Abstract: A transmission system using a toothed belt includes a belt body made of elastomer and a core wire made of carbon fiber and provided so as to be embedded in the belt body and form a helix having a pitch in a belt width direction. The belt body includes a flat band portion having a horizontally long rectangular cross section and a plurality of tooth portions integrally provided on an inner peripheral side of the flat band portion. A belt tension T0.2 per belt width of 1 mm when a belt elongation rate is 0.2% is 70 N/mm or more, an amount of backlash between the toothed belt and a toothed pulley is 0.10 mm or more and less than 0.65 mm, a hardness of the belt body is 89° or more in JIS K 6253 Durometer Type A, and a surface dynamic friction coefficient is 1.5 or less.

公开(公告)号：US20230088538A1

公开(公告)日：2023-03-23

申请号：US17994270

申请日：2022-11-25

Applicant: BANDO CHEMICAL INDUSTRIES, LTD.

Inventor： Kazuyuki TSUBAKINO

IPC: F16G1/28 ,  F16G1/26 ,  D02G3/44 ,  D02G3/26

Abstract: A power transmission belt includes a belt body made of an elastomer, and a cord made of carbon fibers and embedded in the belt body. The belt tension T0.2 per 1 mm belt width at 0.2% of a belt extension rate is 70 N/mm or more. The belt tension T0.5 per 1 mm belt width at 0.5% of the belt extension rate is 220 N/mm or more. The ratio of the belt tension T0.2 to the belt tension T0.5 is 0.33 or more.