| 摘要 |
An arrangement for lubricating the upper bearing for a drive shaft in a marine propulsion drive shaft housing. In accordance with the invention, the drive shaft below the bearing is housed in a cavity which has a cross-sectional dimension only slightly greater than that necessary to afford rotation of the shaft. The cavity is provided with oil so that the cavity is only partially full when the shaft is not rotating, and the shaft is formed, below the bearing, with a noncircular cross section so that shaft rotation raises the level of the oil in the cavity and communicates the oil with the lower bearing.
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