Planetary gear transmission systems or components – Input from independent power sources – Including electric motor input
Reexamination Certificate
2007-01-10
2010-10-26
Wright, Dirk (Department: 3655)
Planetary gear transmission systems or components
Input from independent power sources
Including electric motor input
Reexamination Certificate
active
07819768
ABSTRACT:
A hydraulic control apparatus for a transmission includes a line pressure regulating device that enables control in which an oil pressure from an oil pump is regulated so as to attain a line pressure, and that enables control in which the line pressure is switched stepwise between a low pressure state in a lower pressure range and a high pressure state in a higher pressure range; a plurality of hydraulic servos that engage and disengage friction engaging elements using engagement pressures that are based on the line pressure; and a high pressure state detecting device that detects that the line pressure regulating device is outputting the line pressure in the high pressure state.
REFERENCES:
patent: 4388844 (1983-06-01), Arai et al.
patent: 5074167 (1991-12-01), Yoshimura et al.
patent: 5776030 (1998-07-01), Minowa et al.
patent: 6398693 (2002-06-01), Kawamura
patent: 2005/0137043 (2005-06-01), Kinugasa et al.
patent: A 07-56333 (1995-03-01), None
patent: A 07-077079 (1995-03-01), None
patent: A 07-083320 (1995-03-01), None
patent: A 2005-106149 (2005-04-01), None
patent: A 2005-133856 (2005-05-01), None
patent: A 2005-207303 (2005-08-01), None
patent: A 2005-313672 (2005-11-01), None
Adachi Masatoshi
Endo Hiroatsu
Enomoto Kazuhito
Fujikawa Masato
Kawaguchi Kazuo
Aisin AW Co. Ltd.
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
Wright Dirk
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