192 clutches and power-stop control – Clutches – Automatic
Reexamination Certificate
2006-08-08
2006-08-08
Lorence, Richard M. (Department: 3681)
192 clutches and power-stop control
Clutches
Automatic
C192S038000, C192S113320
Reexamination Certificate
active
07086513
ABSTRACT:
A rotation transmission device includes an input member, an outer ring mounted around the input member, a two-way clutch and an electromagnetic clutch for selectively engaging and disengaging the two-way clutch, both clutches being mounted between the input member and the outer ring. The electromagnetic clutch includes an armature coupled to a retainer of the two-way clutch so as to be non-rotatable and axially movable relative to the retainer. By energizing its electromagnet, the armature is pulled toward the electromagnet until it is pressed against a rotor fixed to the outer ring. The input member is formed with an oil supply passage. Oil is supplied through the oil supply passage and an oil passage defined between the outer periphery of the input member and the inner periphery of the rotor into a space between the two clutches. The oil passage has a restricted, narrow portion to limit the amount of oil supplied into the above space. This prevents a rise in oil pressure in this space and thus prevents the armature from being pressed against the rotor and the two-clutch from engaging in an untimely manner.
REFERENCES:
patent: 6244403 (2001-06-01), Ito et al.
patent: 6766888 (2004-07-01), Yasui et al.
patent: 2002/0170795 (2002-11-01), Yasui et al.
patent: 11-336799 (1999-12-01), None
patent: 2001-165197 (2001-06-01), None
patent: 2001-349344 (2001-12-01), None
Lorence Richard M.
NTN Corporation
Wenderoth , Lind & Ponack, L.L.P.
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