Patent ID: 9726202
Date: 2017-08-08
CPC Classifications: F04B,F15B

Claim:
1. A pump device comprising: a pump case; a switching valve for switching a flow of hydraulic fluid to one of a first chamber and a second chamber of a cylinder device, an inside of which is segmented into the first chamber and the second chamber by a piston; a first chamber-side relief valve that is capable of relieving pressure of a first chamber-side flow path connected to the first chamber; and a second chamber-side relief valve that is capable of relieving pressure of a second chamber-side flow path connected to the second chamber, wherein the switching valve, the first chamber-side relief valve, and the second chamber-side relief valve are integrally accommodated inside the pump case, and the first chamber-side relieve valve and the second chamber-side relief valve comprise a pressure adjustment mechanism that adjusts a working pressure.