Stage-geared gearbox for motor vehicles

Details Stage-geared gearbox for motor vehicles Stage-geared gearbox for motor vehicles

2007-10-09

2007-10-09

Le, David D. (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

With synchronizing clutch or brake

C475S209000, C475S302000, C074S745000, C074S329000, C074S331000, C074S333000, C074S335000

Reexamination Certificate

active

10526777

ABSTRACT:
A stage-geared gearbox for motor vehicles, includes an unsynchronized basic gearbox, at least one synchronized auxiliary gear and at least one control unit for controlling engagement and disengagement of the gears of the gearbox and also neutral position. In the gearbox, the control unit is arranged so as, when input signals indicating that neutral position is selected are received, to put the synchronized auxiliary gear in neutral position.

REFERENCES:
patent: 3429202 (1969-02-01), Galicher
patent: 4986142 (1991-01-01), Borodin et al.
patent: 5791189 (1998-08-01), Newbigging
patent: 6250172 (2001-06-01), Pigozzi et al.
patent: 6440032 (2002-08-01), Stauber et al.
patent: 6709356 (2004-03-01), Fuhrer et al.
patent: 2001/0025536 (2001-10-01), Nishimura
patent: 0612642 (1994-08-01), None
patent: WO 0192048 (2001-12-01), None
patent: WO 0192049 (2001-12-01), None
International Search Report from PCT/se2003/001389.

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