| 摘要 |
<P>PROBLEM TO BE SOLVED: To pevent power of a power machine from being used uneconomically, by increasing/decreasing the amount of liquid fed per revolution of a rotor for addressing when a supply amount of liquid is set at a predetermined supply amount. Ž<P>SOLUTION: The oil pump 1 includes a housing 10 having a liquid inflow hole 18a and a liquid outflow hole 19a. In the housing 10, a drive gear 21 rotatively driven by the power machine and a driven gear 22 are stored, and also a movable member 3 having an opposed surface 31a opposed to the tooth tip of the tooth 21a of the drive gear 21 is provided. The movable member 3 is moved in a direction where a separation distance between the opposed surface 31a and the tooth 21a of the drive gear 21 is changed, by fluid pressure in the housing 10. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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