Roadheader gearbox
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United States of America Patent
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Oct 21, 2014
Grant Date -
Dec 5, 2013
app pub date -
May 30, 2012
filing date -
May 30, 2012
priority date (Note) -
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Abstract
A gearbox includes a shaft input spherical bearing and a shaft output spherical bearing enabling the ring gear to float within the housing and not engage the housing. The shaft output spherical bearing permits angular displacement of the output shaft with respect to the longitudinal axis of said output shaft. A spline connection enables the ring gear to pivot with respect to the cover. Loads transmitted to the housing of the gearbox are not transferred to the gear systems and the gear systems self-align within the housing.
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