Motor vehicle starter pinion with improved acoustic performance
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United States of America Patent
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Jan 26, 2021
Grant Date -
Mar 21, 2019
app pub date -
Feb 23, 2017
filing date -
Mar 9, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates mainly to an assembly comprising: —a combustion engine ring gear having a plurality of teeth, the said ring gear being defined by a modulus and a pressure angle, —a starter comprising a pinion (31) able to engage with the said ring gear of the said combustion engine, the said pinion (31) having a plurality of teeth (42) is defined by a modulus (Mp) and a pressure angle (alpha_p), characterized in that a pinion product which is the product of the modulus (Mp) of the said pinion (31) and the cosine of the pressure angle (alpha_p) of the said pinion (31) is greater than a ring-gear product equal to the product of the modulus of the said ring gear and the cosine of the pressure angle of the said ring gear.
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