US 12,467,516 B2
Toothed belt
Susumu Osaki, Hyogo (JP); and Yusuke Hemmi, Hyogo (JP)
Assigned to Mitsuboshi Belting Ltd., Kobe (JP)
Appl. No. 18/273,499
Filed by Mitsuboshi Belting Ltd., Kobe (JP)
PCT Filed Jan. 21, 2022, PCT No. PCT/JP2022/002298
§ 371(c)(1), (2) Date Jul. 20, 2023,
PCT Pub. No. WO2022/158582, PCT Pub. Date Jul. 28, 2022.
Claims priority of application No. 2021-009529 (JP), filed on Jan. 25, 2021; and application No. 2022-004259 (JP), filed on Jan. 14, 2022.
Prior Publication US 2024/0077131 A1, Mar. 7, 2024
Int. Cl. F16G 1/28 (2006.01); F16G 1/10 (2006.01)
CPC F16G 1/28 (2013.01) [F16G 1/10 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A toothed belt comprising:
tooth portions arranged at predetermined intervals in a belt circumferential direction; and
a reinforcing layer buried along a contour of the tooth portions,
wherein,
the reinforcing layer is buried in each of the tooth portions such that a maximum height from a bottom portion of the tooth portion to the reinforcing layer is in a range of 30% to 63% of a height from the bottom portion of the tooth portion to a tooth tip of the tooth portion,
the reinforcing layer comprises a plurality of reinforcing fiber filaments arranged in the belt circumferential direction, and comprises no fibers intersecting the belt circumferential direction,
the reinforcing layer has a structure in which the reinforcing fiber filaments are arranged in the belt circumferential direction and bonded to form a sheet shape in an untwisted state,
the reinforcing layer has a thickness of 0.05 mm to 0.2 mm, and
a tensile modulus (GPa) of each of the reinforcing fiber filaments satisfies a condition of:
5≤[thickness (mm) of the reinforcing layer]×[tensile modulus (GPa) of the reinforcing fiber filament]≤60, and
a value of the tensile modulus is 50 GPa to 300 GPa.