Power plants – Pressure fluid source and motor – Valve means reverses flow from pump to reversible rotary motor
Reexamination Certificate
2007-10-16
2007-10-16
Lazo, Thomas E. (Department: 3745)
Power plants
Pressure fluid source and motor
Valve means reverses flow from pump to reversible rotary motor
C060S460000, C180S244000
Reexamination Certificate
active
11359728
ABSTRACT:
A hydraulic hybrid powertrain system includes a power plant generating a high pressure fluid at an output, at least one drive motor responsive to the high pressure fluid for generating rotary motion at an output, and a mode selection device connected to the power plant output and the drive motor for selecting a mode of operation from a plurality of drive motor modes of operation including at least two of a drive mode, a neutral mode, a reverse mode and a park mode. The system includes a control device connected to the power plant and the drive motor for controlling operation of the drive motor in the plurality of modes of operation, a selectively actuated brake device for interrupting high pressure fluid flow to the drive motor, and a check valve bridge circuit for connecting the drive motor to a low pressure fluid source when the brake device is actuated.
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Clemens William J.
Fraser Clemens Martin & Miller LLC
Hybra-Drive Systems, LLC
Lazo Thomas E.
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