| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an oil pump device having a relief valve of simple structure so as to reduce the cost and size of the device. <P>SOLUTION: This oil pump device comprises a relief valve 7 formed by stacking a plurality of plate valves 71, 72, and 73 opened so that oil in a delivery passage 13a is circulated to a suction passage 12a or an oil pan when the oil in the delivery passage 13a reaches specified pressure. <P>COPYRIGHT: (C)2004,JPO</p> |
