| US 7,487,697 B2 | ||
| Power transfer unit | ||
| Durgaprasad Marla, Inkster, Mich. (US); Jonathan Adler, Ann Arbor, Mich. (US); Dennis Cook, Royal Oak, Mich. (US); and Gary Monkaba, Troy, Mich. (US) | ||
| Assigned to Automotive Components Holdings, LLC, Dearborn, Mich. (US) | ||
| Filed on Sep. 15, 2006, as Appl. No. 11/522,013. | ||
| Application 11/522013 is a continuation in part of application No. 10/444032, filed on May 22, 2003, granted, now 7,127,967. | ||
| Prior Publication US 2007/0006675 A1, Jan. 11, 2007 | ||
| Int. Cl. F16H 37/06 (2006.01) | ||
| U.S. Cl. 74—665GC [74/413; 74/420; 74/665 H] | 19 Claims |
| 1. A motor vehicle power transfer unit for distributing torque from a transmission assembly between a front wheel drive line
and a rear wheel drive line, said power transfer unit comprising:
a housing;
a driving gear supported for rotation on the housing, a driven gear supported for rotation on the housing;
an idler gear engaged with the driving gear;
the driven gear engaged with the idler gear;
a bevel ring gear secured to the driven gear for rotation therewith;
a bevel gear supported for rotation on the housing and engaged with the ring gear; and
an idler shaft secured to and supported on the housing, extending through the idler gear and supporting the idler gear for
rotation thereon, the idler shaft including a chamber and a wall including an outer surface formed with a clearance space,
into which clearance space a portion of the ring gear extends and rotates, said clearance space communicating through the
wall with the chamber, the wall being formed with a first passage including a first end communicating with the chamber and
a second end communicating with the first end and located at the outer surface.
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