Patent ID: 7441405
Filing Date: 2008-10-28
Classification: E02F,F15B

Abstract:
1. A cylinder assembly comprising: a cylinder body including an internal cavity therein; a piston and rod assembly disposed for axial movement within the internal cavity of the cylinder body, the piston and rod assembly having an axial passage extending therein; a hydraulic fluid pump for supplying pressurized fluid to a plurality of ports in fluid communication with the internal cavity of the cylinder body; a tubular element received within the axial passage of the piston and rod assembly, at least a portion of the tubular element extending out of the axial passage and into the internal cavity of the cylinder body between the axial passage and a wall of the cylinder body; and an accumulator; wherein the tubular element includes a fluid passage therein, the fluid passage fluidly communicating the axial passage of the piston and rod assembly with the accumulator, and through a valve with the hydraulic fluid pump.