Patent ID: 7299907

Claim:
A hydraulic shock absorber, comprising: an outer body having a central body bore defined by a cylindrical sidewall surface, a closed end and an open end disposed opposite said closed end; a first piston telescopingly received in the central body bore of said outer body adjacent said closed end thereof, and having a generally annular shape with a cylindrically-shaped inner surface defining a central piston bore, and a cylindrically-shaped outer surface disposed adjacent said sidewall surface of said central body bore to define a first annularly-shaped metering aperture therebetween; a second piston telescopingly received in the central piston bore of said first piston, and having a generally cylindrically-shaped outer surface disposed adjacent said inner surface of said first piston to define a second annularly-shaped metering aperture therebetween; said central body bore defining a pressure chamber between said first and second pistons and said closed end of said outer body; a piston rod having a first end thereof operably connected with said second piston and a second end thereof disposed adjacent said open end of said outer body; and hydraulic fluid disposed in said pressure chamber, whereby inwardly directed impact forces acting on said second end of said piston rod shift said first and second pistons toward said closed end of said outer body, thereby displacing said hydraulic fluid in said pressure chamber through said first and second metering apertures to progressively dampen the impact forces.