Torque coupling with tri-mode overrunning clutch assembly
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United States of America Patent
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-
Feb 28, 2006
Grant Date -
Sep 29, 2005
app pub date -
Mar 29, 2004
filing date -
Mar 29, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A controllable, multi-mode, bi-directional overrunning mode clutch and a shift system adapted for use in a power transfer assembly for transferring drive torque from a primary driveline to a secondary driveline so as to establish a four-wheel drive mode. The mode clutch includes a first ring journalled on a first rotary member, a second ring fixed to a second rotary member, and a plurality of rollers disposed in opposed cam tracks formed between the first and second rings. The first ring is split to define an actuation channel between its end segments. A cam member is moveable between positions engaged with and released from one or both end segments of the split first ring. The shift system includes a mode fork which controls movement of the cam member for establishing a two-wheel drive mode in addition to on-demand and locked four-wheel drive modes.
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