Gear device for electric motor
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United States of America Patent
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Oct 3, 2017
Grant Date -
Feb 9, 2012
app pub date -
Aug 4, 2011
filing date -
Aug 5, 2010
priority date (Note) -
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Abstract
A gear device for electric motor 1 which is combined with an electric motor installed in a vehicle, wherein a breather pathway 8 is provided in a gear box 2 where a row of gears for transmitting force of the electric motor is contained, the breather pathway connecting between an inside and outside of the gear box 2, and in the breather pathway 8, a closing valve system 10 is provided to close the breather pathway 8 when an outer pressure of the gear box 2 is lower in comparison to an inner pressure of the gear box 2 exceeding an acceptable range.
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