Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Marine vehicle
Reexamination Certificate
2008-08-04
2011-10-25
Nguyen, Tan Q (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Marine vehicle
C701S041000, C060S382000
Reexamination Certificate
active
08046122
ABSTRACT:
A control system for a hydraulic steering cylinder utilizes a supply valve and a drain valve. The supply valve is configured to supply pressurized hydraulic fluid from a pump to either of two cavities defined by the position of a piston within the hydraulic cylinder. A drain valve is configured to control the flow of hydraulic fluid away from the cavities within the hydraulic cylinder. The supply valve and the drain valve are both proportional valves in a preferred embodiment of the present invention in order to allow accurate and controlled movement of a steering device in response to movement of a steering wheel of a marine vessel.
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Barta Jason C.
Folsom Gregory C.
Brunswick Corporation
Lanyi William D.
Nguyen Tan Q
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