Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Automatic route guidance vehicle
Reexamination Certificate
2005-01-25
2005-01-25
Nguyen, Tan Q. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Automatic route guidance vehicle
C701S209000, C318S577000
Reexamination Certificate
active
06847868
ABSTRACT:
An apparatus and method for clearing a playing surface are provided. The apparatus preferably includes a chassis or frame, a sensor connected to the chassis to sense a location of a line on a playing surface that needs to be cleaned, and a drive connected to the chassis to drive the chassis in a selected direction of travel. The apparatus also preferably includes a controller connected to the chassis, in communication with the drive, and responsive to the sensor to control the drive to thereby direct the chassis to move along the line that needs to be cleaned in the selected direction of travel and a cleaning device connected to the chassis to clean the line with the chassis is being driven along the line. Associated software is provided as well.
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Bracewell & Patterson L.L.P.
Nguyen Tan Q.
Tran Dalena
Whittle Jeffrey S.
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