| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power steering device having a switching valve equipped with required liquid-tightness. <P>SOLUTION: The power steering device supplies hydraulic pressure to both pressure chambers of a hydraulic cylinder by a reversible pump through first and second passages. A switching valve provided in a communicating passage communicating the first passage and the second passage is structured by a poppet valve. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
