Toothed belt
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United States of America Patent
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-
Apr 8, 2008
Grant Date -
Nov 23, 2006
app pub date -
Sep 10, 2002
filing date -
Sep 10, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A toothed belt for the transmission of force is provided, a polyurethane body forms an outer layer and may be fabric-reinforced. Teeth of polyurethane are formed on the polyurethane body as an inner layer. High-strength tension elements are disposed between the outer layer and the teeth and are formed of spirally wound, spaced-apart cord filaments. A material layer of wear-resistant material covers the inner peripheral surface of the belt and hence the teeth. The cord filaments can be comprised of polyester-polyacrylate fibers/filaments produced by fusion spinning from liquid crystal polymers, and PBO fibers/filaments. Alternatively, the cord filaments can be comprised of hybrid filaments of high-strength aramid fibers and elastic polyamide fibers, or the hybrid filaments can have a high-strength filament component and a dampening or elastic filament component.
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