Device for driving a plurality of hydraulic shift cylinders...

Details Device for driving a plurality of hydraulic shift cylinders... Device for driving a plurality of hydraulic shift cylinders...

2005-05-10

2008-09-02

Lewis, Tisha D (Department: 3681)

Machine element or mechanism

Gearing

Interchangeably locked

C137S051000, C251S289000

Reexamination Certificate

active

07418885

ABSTRACT:
A device for driving a plurality of hydraulic shift cylinders, especially shift cylinders for shifting gears of a twin-clutch transmission, includes a first slide valve having a control intake to which control pressure is applied, a system pressure intake to which system pressure is applied, two outlets and at least one return outlet, the one outlet being connected to the system pressure intake and the other outlet being connected to the return outlet, as desired, and a valve device connected to the outlets of the slide valve via which the shift cylinders may be selectively actuated.

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