19-09-2019 дата публикации
Номер: US20190285147A1
Принадлежит:
A tensioner comprising a base, a ring engaged with the base, the ring rotatable about a center “C” within a base opening, a pulley journalled to the ring, a pivot arm pivotally engaged with the ring, a pulley journalled to the pivot arm, a torsion spring disposed between the ring and the pivot arm for urging the pivot arm, a damping assembly frictionally disposed between the base and the ring, a spring applying a normal load to the damping material, and the damping material having a resistance in the range of greater than 0Ω up to approximately 10,000Ω. 1. A tensioner comprising:{'b': '10', 'a base ;'}{'b': 50', '51, 'a ring engaged with the base, the ring rotatable about a center “C” within a base opening, a pulley journalled to the ring;'}{'b': '90', 'a pivot arm pivotally engaged with the ring, a pulley journalled to the pivot arm, the pivot arm pivot axis is offset from center “C”;'}{'b': '53', 'a torsion spring disposed between the ring and the pivot arm for urging the pivot arm;'}{'b': 230', '250, 'a damping material frictionally disposed between the base and the ring, a spring applying a normal load to the damping material; and'}the damping material partially comprising stainless steel fibers and having a resistance in the range of greater than 0Ω up to approximately 10,000Ω.2. The tensioner as in claim 1 , wherein the damping material comprises by weight approximately 3% to approximately 5% stainless steel fibers.3. The tensioner as in claim 2 , wherein the damping material further comprises Nylon 66.4. The tensioner as in claim 1 , wherein the spring comprises a wave spring.5. The tensioner as in claim 1 , wherein a retaining member attached to the base retains the ring to the base.6. The tensioner as in further comprising a bushing between the ring and the base claim 1 , the bushing comprising stainless steel fibers and a resistance in the range of greater than 0Ω up to approximately 10 claim 1 ,000Ω.7. The tensioner as in claim 1 , wherein the resistance ...
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