Transmission case for lube return and method

Details Transmission case for lube return and method Transmission case for lube return and method

2007-10-02

2007-10-02

Pang, Roger (Department: 3681)

Planetary gear transmission systems or components

Input from independent power sources

Including electric motor input

C475S159000, C184S006120

Reexamination Certificate

active

11060225

ABSTRACT:
The invention provides a transmission case that includes a rear housing that partially encloses transmission components about a center axis. The rear housing sealingly connects to a main housing at one end and to a drive unit extension at another end. The rear housing has an axial passage generally parallel to the center axis and a cross passage that is substantially perpendicular to the axial passage. The cross passage is in fluid communication with the axial passage to allow draining of fluid within the drive unit extension to the main housing. A method of returning fluid to a transmission oil sump is also provided.

REFERENCES:
patent: 2984122 (1961-05-01), Woolley
patent: 4329887 (1982-05-01), Kawamoto
patent: 5372213 (1994-12-01), Hasebe et al.
patent: 6227333 (2001-05-01), Scheib et al.
patent: 6497211 (2002-12-01), Nomura et al.
patent: 6644440 (2003-11-01), Kageyama et al.
patent: 6729206 (2004-05-01), Hayabuchi et al.
patent: 7002267 (2006-02-01), Raszkowski et al.

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