| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a piston pump capable of being easily machined by making a spring of a suction valve simple in constitution and reducing cost. <P>SOLUTION: The piston pump has a suction valve biasing member for biasing the suction valve in a valve-opening direction; and a piston biasing member for biasing a piston to a piston drive member side, and performs suction or delivery of an operation fluid by selectively opening/closing the suction valve and a delivery valve by reciprocation motion of the piston. The suction valve biasing member is formed by a leaf spring of an approximately flat plate-like shape and is fixed to the piston. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
