ANORDNING VID TRYCKFLUIDUMCYLINDRAR FOER AOSTADKOMMANDE AV AENDLAEGESDAEMPNING HOS KOLVEN

摘要

A fluid-controlled buffer device in cylinders having a fluid-operated working piston, comprising a cylindrical buffer piston mounted at the end of the working piston and adapted to enter into a cylindrical fluid outlet bore in an end wall of the cylinder, an annular clearance between the cylindrical surfaces of said buffer piston and said bore being sealed by a sealing-ring mounted with radial play in an annular notch located in either of said cylindrical surfaces the other cylindrical surface being provided with passages which when the buffer piston is moved into said bore initially permit escape of the fluid from the cylinder but then are successively closed by the sealing-ring.