Interrelated power delivery controls – including engine control – Clutch control – Condition responsive control
Reexamination Certificate
2007-09-11
2007-09-11
Le, David D. (Department: 3681)
Interrelated power delivery controls, including engine control
Clutch control
Condition responsive control
C477S074000, C477S077000, C477S092000, C477S172000, C477S174000
Reexamination Certificate
active
11100402
ABSTRACT:
The present invention provides a drive device for a working vehicle whereby gear change shock during the forward/reverse running changeover action can be reduced while achieving shortening of cycle time and protecting various clutch mechanisms in the transmission. If a reverse running command is output from a running control device while the vehicle is running forward, an ECMV controls a braking force of a brake device so as to reduce a vehicle speed through a first prescribed speed to a second prescribed speed, and disengages the forward clutch. When the vehicle speed reaches the first prescribed speed, the ECMV puts the reverse clutch in a slipping action condition and, after the vehicle speed reaches the second prescribed speed, gradually engages the reverse clutch.
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patent: 5588515 (1996-12-01), Toyama et al.
patent: 5699248 (1997-12-01), Nakagami et al.
patent: 2004/0180753 (2004-09-01), Takamura et al.
patent: 6-272758 (1994-09-01), None
patent: 9-88653 (1997-03-01), None
Nakagawa Tomohiro
Oka Shunji
Okada Toshikazu
Yamamoto Shigeru
Komatsu Ltd.
Le David D.
Wenderoth , Lind & Ponack, L.L.P.
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