Patent attributes
An actuation chamber (2) provided in a housing (1) is communicatively connected to a supply and discharge port (6) via a pressurized oil supply and discharge passage (7). A valve case (11) of a sequence valve (10) is attached to an attachment hole (8) provided at an intermediate portion of the supply and discharge passage (7). A valve seat (25) is provided in a cylindrical hole (20) provided in the valve case (11). A valve member (26) is biased leftward toward the valve seat (25) by a pressure-setting spring (31). When pressure of pressurized oil supplied to a first portion of the supply and discharge passage (7) which is close to the supply and discharge port (6) exceeds a set pressure, the pressurized oil moves the valve member (26) rightward for valve opening, against the pressure-setting spring (31).
