192 clutches and power-stop control – Clutches – Axially engaging
Reexamination Certificate
2005-06-21
2005-06-21
Lorence, Richard M. (Department: 3681)
192 clutches and power-stop control
Clutches
Axially engaging
C192S085060, C192S113360, C188S071600, C188S26400E
Reexamination Certificate
active
06907973
ABSTRACT:
A system and method for supplying cooling fluid for frictional elements, for example multiple disc clutches and multiple disc brakes, in automatic transmissions. The cooling fluid flows through the multiple disc clutch or brake in a predefined manner radially inward or outward, whereby a defined flow through the clutch or brake packet is ensured through a defined pressure difference in the cooling fluid between the cooling fluid supply and the discharge of the cooling fluid. A preferred embodiment of device for supplying the cooling fluid is designed as a ring-shaped channel that partially or fully encloses the clutch or the brake.
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German Search Report, Apr. 2003.
Ast Ewald
Bauknecht Gert
Dorr Ulrich
Schiele Peter
Ziemer Peter
Lorence Richard M.
Milde & Hoffberg LLP
ZF Freidrichshafen AG
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