Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2011-07-05
2011-07-05
Black, Thomas G (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C701S072000, C180S006500, C180S065800, C180S907000
Reexamination Certificate
active
07974753
ABSTRACT:
A direction and speed control device for an electronic wheelchair includes: a base member mounted on the electronic wheelchair; a manually operable pointing unit mounted on the base member and including a control stick pivotable relative to the base member; first and second three-axis g acceleration sensors, each generating a voltage output indicative of tilt of a respective one of the control stick and the base member in three orthogonal axes; and a control unit operable so as to process the voltage outputs of the first and second three-axis g acceleration sensors to generate corresponding control signals for controlling rotation direction and speed of a wheel unit of the electronic wheelchair.
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Birlanga, Perez, “European Search Report” for EP 07 00 5658 as completed Aug. 13, 2007 (4 pages).
Hsieh Shih-Chia
Kuo Yang-Chi
Tu Shih-Wang
Wu Ying-Da
Black Thomas G
Coleman Marthe Marc
Kwang Yang Motor Co. Ltd.
Winstead PC
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