Patent ID: 6477936
Filing Date: 2002-11-12
Classification: B60J,E05F,E05Y,F15B

Abstract:
An apparatus for controlling movement of a movable component of a vehicle, said apparatus comprising:a supply line for pressurized working medium, a non-pressurized connection line leading to a reservoir, a hydraulic cylinder attachable to said movable component, said hydraulic cylinder defining first and second working chambers, a first control valve for enabling flow of working medium from said supply line to said first working chamber of said hydraulic cylinder or for enabling flow of working medium from said first chamber to said connection line, an overflow line for connecting said first working chamber with said second working chamber and thereby enabling said hydraulic cylinder to be manually operated, a second control valve in said overflow line, a first post-suction line extending from said overflow line to said connection line, and a first check valve in said first post-suction line for blocking flow of working medium towards said connection line.