US 4,175,643 AGranted

Lubricating system for power transmitting apparatus

AssigneeRockwell International Corporation

InventorDavid K. Jenkins

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Abstract

A lubricating system is for a forward bearing and a rear bearing of an input shaft of an interaxle differential. The interaxle differential includes a housing having an oil sump therein and a number of elements thereof capable of rotating within the housing to splash oil about the interior of the housing. The lubricating system includes supply ports through the housing respectively aligned with the bearings which are capable of supplying oil thereto by gravity flow. An interaxle differential casing is mounted on the shaft for rotation therewith between the bearings and has an outer surface which is coaxially aligned with the shaft. An oil removing device is aligned with the outer surface of the interaxle differential casing to remove oil therefrom during rotation. A first channel extends forwardly and downwardly from the oil removing device to the supply port of the forward bearing for gravity transfer of oil thereto. A second channel extends rearwardly and downwardly from the oil removing device to the supply port for the rear bearing for gravity transfer of the oil thereto.

Claims1

Dependent claims

A lubricating system for a forward bearing and a rear bearing of a shaft in an interaxle differential assembly, said interaxle differential assembly being of the type which includes a housing having a liquid lubricant sump therein and a number of elements thereof capable of rotating within said housing to splash said liquid lubricant about the interior of said housing, said lubricating system comprising:

a first supply port and a second supply port through said housing respectively aligned with said forward bearing and said rear bearing capable of supplying liquid lubricant thereto by gravity flow;
an interaxle differential housing having a casing and being mounted on said shaft between said bearings for rotation therewith, said casing having an outer surface thereon coaxially aligned with said shaft;
means for removing said liquid lubricant from said outer surface during rotation of said shaft, said means for removing said liquid lubricant from said outer surface being an oil scraping device which is formed integrally with said housing and extends rigidly from an interior surface thereof toward said outer surface in close proximity thereto;
a first open channel extending forwardly and downwardly of said oil scraping device to said first supply port for gravity transfer of said liquid lubricant thereto;
a second open channel extending rearwardly and downwardly of said oil scraping device to said second supply port for gravity transfer of said liquid lubricant thereto;
and
said first channel and said second channel being formed integrally with said housing and extending rigidly from said interior surface thereof.

4 more elements

Dependencies are inferred from the claim text.