Driving force transmitting system

Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid resistance inhibits relative rotation

Reexamination Certificate

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Details

C475S091000, C475S093000, C475S099000, C475S100000, C475S116000, C475S127000, C192S003570, C192S003630, C192S085060

Reexamination Certificate

active

10938544

ABSTRACT:
A manual valve is provided between a mechanical oil pump and a clutch of an automatic transmission device for connecting an engine with the automatic transmission device, a first check valve is provided in a passage connecting the mechanical oil pump with the manual valve, and an electric oil pump is provided in parallel with the mechanical oil pump, wherein the electric oil pump is operated during an idling stop of the engine and an output side of the electric oil pump is connected to the passage between the first check valve and the manual valve so that the working fluid from the electric oil pump is supplied to the clutch of the automatic transmission device through the manual valve. Accordingly, the electric oil pump can be made smaller and the supply of the working fluid from the electric oil pump to the clutch can be prevented when it is not necessary.

REFERENCES:
patent: 5644916 (1997-07-01), Hayasaki
patent: 6390947 (2002-05-01), Aoki et al.
patent: 6554736 (2003-04-01), Takano et al.
patent: 6997299 (2006-02-01), Brissenden et al.
patent: 2004/0192502 (2004-09-01), Suzuki et al.
patent: 2000-046166 (2000-02-01), None
patent: 2001-280458 (2001-10-01), None
patent: 2002021993 (2002-01-01), None
patent: 2002-195399 (2002-07-01), None

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