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RANDOM ENGAGEMENT ROLLER CHAIN SPROCKET WITH STAGED MESHING AND FLANK RELIEF TO PROVIDE IMPROVED NOISE CHARACTERISTICS
RANDOM ENGAGEMENT ROLLER CHAIN SPROCKET WITH STAGED MESHING AND FLANK RELIEF TO PROVIDE IMPROVED NOISE CHARACTERISTICS
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机译：随机啮合滚子链轮，具有分段网格和侧面消除功能，可改善噪声特性
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摘要
A random engagement roller chain sprocket (112, 114) for use primarily inautomotive engine chain drive applications whichincorporates different asymmetrical tooth profiles for improved noisereduction. In particular, the sprocket (112, 114) includes a firstplurality of sprocket teeth each having a first tooth profile (132) includinga first engaging flank (304), a first engaging root (pT.C), and afirst flat (144) positioned between the first engaging flank and firstengaging root wherein a first roller (314) initially contacts the first flatatthe onset of the first roller meshing with the sprocket. The sprocket alsoincludes a second plurality of sprocket teeth each having a secondtooth profile (136) different from the first tooth profile and including asecond engaging flank (302), a second engaging root (Pt.B) , and asecond flat (lambda) tangent to the second engaging root remote from thesecond engaging flank wherein a second roller (342) initiallycontacts the second flat at the onset of meshing between the second roller andthe sprocket.
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