Patent 9377099 was granted and assigned to Meritor on June, 2016 by the United States Patent and Trademark Office.
A transmission system includes a housing having a sump, the housing containing a crown wheel and a pinion. The transmission system further includes an oil reservoir and a pump selectively operable to pump fluid from the oil reservoir to the sump for lubricating the crown wheel. The pump is selectively operable to pump fluid from the sump to the reservoir.