| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tire booster in which an exhaust valve is surely closed in a state that a motor is stopped in drive. <P>SOLUTION: The tire booster is set to attach a coil spring 258 to a piston 240 in the cylinder chamber 215 side and to accumulate an energizing force when the piston 240 is moved to an upper dead point side. As a result, even if the motor 250 is stopped in drive in a state that the piston 240 is arranged in the vicinity of the upper dead point, the piston 240 is moved to the lower dead point side by the energizing force of a coil spring 258. Then the exhaust valve 256 is surely closed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
