Power transmission lubrication system

Details Power transmission lubrication system Power transmission lubrication system

2007-11-27

2007-11-27

Estremsky, Sherry (Department: 3681)

Planetary gear transmission systems or components

With lubricaton

C475S337000

Reexamination Certificate

active

11233615

ABSTRACT:
A planetary transmission includes a plurality of planetary gearsets. The planetary gearsets have a lubrication system comprised of pinion pins secured in side plates and central passages located within the pinion pins. The central passages or cavities have radially outwardly disposed fluid passages, which supply fluid lubrication to support bearings for the pinion pins of the respective planetary gearsets. Lubrication fluid is communicated into the cavities when thrust loads are imposed on the planetary gearsets and the thrust bearings disposed between adjacent planetary gearsets reduces the flow area for the lubrication fluid.

REFERENCES:
patent: 5429374 (1995-07-01), Eichenberger
patent: 5928100 (1999-07-01), Ohtake et al.
patent: 7189183 (2007-03-01), Fugel et al.
patent: 2003/0167869 (2003-09-01), Burgman et al.

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