| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent an accident caused by the wrong connection of a power supply cable of a motor for driving a water spray gun. <P>SOLUTION: The device has a first switch for feeding electric power to the motor for swinging the water spray gun to the right till the water spray gun reaches a limit position in the right direction, a second switch for feeding the electric power to the motor for swinging the water spray gun to the left till the water spray gun reaches a limit position in the left direction, and a third switch for stopping the supply of the electric power for the motor when a right limit signal or a left limit signal is detected. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
