Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake
Reexamination Certificate
2007-08-21
2007-08-21
Pang, Roger (Department: 3681)
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid controlled mechanical clutch or brake
C477S098000, C138S042000
Reexamination Certificate
active
10834535
ABSTRACT:
An apparatus for compensating the viscous characteristics of a hydraulic medium in a pressure line (10) in which apparatus a pressure nozzle (12) with constant geometry and constant through-flow cross-section is located in the pressure line (10). It is provided according to the invention that in the pressure Line (10) upstream or downstream of the pressure nozzle (12) at least one channel-shaped area (11, 28) is made or situated which, compared to the pressure nozzle (12), has a smaller through-flow cross-section and a larger axial extension and that the control pressure (P_SekV) abutting between the channel-shaped area (11, 28) and the pressure nozzle (12) can be supplied via a control pressure line (13) to a shift valve (14).
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Gierer Georg
Schiele Peter
Schmidt Thilo
Davis & Bujold & Daniels, P.L.L.C.
Pang Roger
ZF Friedrichshafen AG
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