Toothed belt

Details Toothed belt Toothed belt

1986-11-05

1988-01-26

Novosad, Stephen J.

Endless belt power transmission systems or components

Positive drive belt

Drive surfaces on belt formed in or interconnected by...

474263, 474268, F16G 508, F16G 520

Patent

active

047214961

ABSTRACT:
A toothed belt with improved durability, comprising: a back surface section and tooth section that are made of a hydrogenated acrylonitrile-butadiene copolymer (H-NBR) with a hydrogenation rate of 80% or more, a tooth cloth that covers said tooth section and tooth lands positioned between the adjacent tooth sections, said tooth cloth being made of industrial nylon raw fiber with a viscosity relative to sulfuric acid of 2.6 to 2.8, a tensile strength of 5 g/denier or more, and a fineness of single fibers of 5 denier or less, and a plurality of core fibers with a core diameter of 0.9 to 1.1 mm and a ratio of said core diameter to said tooth cloth thickness in the range of 1.8 to 5.0, said core fibers being made of glass fiber filaments with a first twist number of 1.7 to 2.6 twists/inch, and a final twist number of 1.8 to 2.3 twists/inch, twisted together.

REFERENCES:
patent: 3464875 (1969-09-01), Brooks et al.
patent: 3607499 (1971-09-01), Garbin
patent: 3660974 (1972-05-01), Marzocchi et al.
patent: 4053547 (1977-10-01), Redmond, Jr.
patent: 4169393 (1979-10-01), Wetzel et al.
patent: 4632665 (1986-12-01), Skura

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