Patent ID: 7216752
Filing Date: 2007-05-15
Classification: F16D

Abstract:
1. A hydraulic cylinder with a cylinder housing having a housing bore, a piston held longitudinally displaceably in the housing bore, a piston rod allocated to the piston; said piston rod having two end areas, one extending toward the piston and the other extending away from the piston, and an axial center area which lies between the end areas of the piston rod, and a fixing element which before first operation of the hydraulic cylinder is detachably connected with the piston rod and fixes the piston rod in a predetermined stroke position in relation to the cylinder housing and which is designed, on first operation of the hydraulic cylinder, to release the piston rod in relation to the cylinder housing, wherein the fixing element before first operation of the hydraulic cylinder is detachably connected with the center area of the piston rod in a first position of the fixing element relative to the piston rod and on first operation of the hydraulic cylinder, said fixing element constructed to move from the first position into a second position area relative to the piston rod, not including the first position and stationary in relation to the piston rod or the cylinder housing, in which second position area the fixing element is fixed for further operations of the hydraulic cylinder.