192 clutches and power-stop control – Clutches – Automatic
Patent
1994-06-07
1995-07-04
Pitts, Andrea L.
192 clutches and power-stop control
Clutches
Automatic
192 451, 192 4892, 188134, F16D 4320, F16D 1500
Patent
active
054292182
ABSTRACT:
A mechanical device to be mounted on a four-wheel drive vehicle capable of transmitting driving force to the rear wheels while the vehicle is being accelerated and cutting off the transmission of driving force to the rear wheels while being braked. This device has an inner member to be coupled in series with a differential or a limited slip differential device, and an outer ring. On the opposite surfaces of the inner member and the outer ring are formed a cylindrical surface and a plurality of cam surfaces, between which are defined wedge-shaped spaces. A retainer is provided between the inner member and the outer ring. It is formed with pockets to receive rollers as engaging elements. A turning effort imparting device is coupled to the retainer through a one-way clutch. A torsion coil spring for producing turning effort is mounted between the retainer and the inner member. When the one-way clutch is switched on or off, the direction of turning effort applied to the retainer changes, so that the direction in which the rotation of the retainer delays with respect to the inner member is reversed. The rollers are thus kept in one of the two opposite engageable positions when the inner member is rotating in either direction.
REFERENCES:
patent: 5131285 (1992-07-01), Weismann et al.
patent: 5269399 (1993-12-01), Ito et al.
Itoh Kenichiro
Yasui Makoto
NTN Corporation
Pitts Andrea L.
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