公开(公告)号：US20170363121A1

公开(公告)日：2017-12-21

申请号：US15539400

申请日：2016-09-30

Applicant: Yong Jun LEE

Inventor： Yong Jun LEE

IPC: F15B15/26 ,  F15B15/06 ,  F15B15/14 ,  F16K31/163 ,  F15B15/24 ,  F16H19/04

Abstract: A hydraulic actuator to which a limit-adjustable mechanical lock device is applied, comprising: a housing having a first hole; side covers coupled at both sides of the housing, and having holder insertion holes formed to be opened toward the first hole side of the housing, and plugs; a first holder of which one side of the outer peripheral surface is inserted into the holder insertion hole at the plug side of the side cover by screw coupling; a second holder fitted and coupled to the inner peripheral surface of the side cover and having one end thereof screw-coupled to the second hole of the first holder; a locking means into which a rod is inserted so as to be movable in an axial direction at a predetermined distance across the second hole of the first holder and the third hole of the second holder.