Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake
Reexamination Certificate
2007-05-22
2007-05-22
Pang, Roger (Department: 3681)
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid controlled mechanical clutch or brake
C192S083000, C192S083000
Reexamination Certificate
active
11002371
ABSTRACT:
A power transmission incorporates a plurality of torque-transmitting mechanisms having stationary piston torque-transmitting mechanisms. Each of the torque-transmitting mechanisms is controlled by one or more hydraulic master cylinders, which provide hydrostatic apply pressure for the respective torque-transmitting mechanisms. The control apparatus may incorporate either two or three master cylinders for controlling five torque-transmitting mechanisms through a plurality of selectively operable valve mechanisms.
REFERENCES:
patent: 6960146 (2005-11-01), Haka
patent: 2006/0042906 (2006-03-01), Ronk et al.
Borgerson James B.
Carey Clinton E.
Stevenson Paul D.
General Motors Corporation
Pang Roger
Thompson Dan L.
Young Edwin A.
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