Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake
Reexamination Certificate
2008-04-01
2008-04-01
Ho, Ha D. (Department: 3681)
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid controlled mechanical clutch or brake
C475S129000, C475S130000, C475S131000
Reexamination Certificate
active
10482108
ABSTRACT:
A drive train for a motor vehicle includes a coupling device between a drive unit and a transmission for torque or moment transfer between the drive unit and the transmission. The coupling device has at least one coupling arrangement that can be activated by a pressure medium. The transmission can be activated through the use of a pressure medium by way of a dedicated actuator whereby, on the basis of a shared pump arrangement that is or can be driven by the drive unit, (i) the pressure medium can be provided for activation of the coupling arrangement, (ii) the operating medium can be conducted to the coupling device for the purpose of operating under the influence of the operating medium, and (iii) the pressure medium can be provided for activation of the transmission. The pump arrangement includes at least one pump, which can be controlled or adjusted with regard to output pressure and/or with regard to output flow rate.
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Busold Thomas
Grosspietsch Wolfgang
Kraxner Dieter
Steiner Eduard
Crowell & Moring LLP
Dr. Ing. h.c.F. Porsche Aktiengesellschaft
Ho Ha D.
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