Hydraulic clutch actuation system

Details Hydraulic clutch actuation system Hydraulic clutch actuation system

2006-05-15

2009-08-11

Lorence, Richard M. (Department: 3655)

192 clutches and power-stop control

Clutches

Operators

C192S085060, C192S101000

Reexamination Certificate

active

07571794

ABSTRACT:
A hydraulic clutch actuation system having a hydraulic clutch control device which includes at least one clutch master cylinder that communicates via a pressure-medium line with a clutch slave cylinder used for actuating a clutch device, the pressure prevailing in the pressure-medium line being relievable via at least one emergency release valve device to permit disengagement of the clutch device in an emergency situation. The hydraulic clutch actuation system is distinguished in that the emergency release valve device has a seal-carrier device for a sealing element which is movable in response to an electromagnet out of an open position, in which a pressure-medium inlet is open, into a closed position in which the sealing element seals the pressure-medium inlet.

REFERENCES:
patent: 6827194 (2004-12-01), Steinel et al.
patent: 2004/0231943 (2004-11-01), Berger et al.
patent: 2005/0258014 (2005-11-01), Berger et al.
patent: 2006/0131123 (2006-06-01), Grethel et al.
patent: 2007/0007097 (2007-01-01), Fraser et al.
patent: 1 236 918 (2002-09-01), None
patent: 1 367 283 (2003-12-01), None

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