Patent ID: 6776269
Filing Date: 2004-08-17
Classification: F16F

Abstract:
A two-stage shock absorber comprising:a pressure tube defining a chamber, said pressure tube having a wall defining a by-pass passage open to said chamber, said by-pass passage extending over a first length in an axial direction of said tube; a first piston slidably disposed within said chamber; a first seal disposed between said first piston and said wall of said pressure tube, said first seal extending over a second length in said axial direction of said tube, said second length being greater than said first length; a second piston slidably disposed within said chamber; a second seal disposed between said second piston and said wall of said pressure tube, said second seal extending over a third length in said axial direction of said tube, said third length being less than said first length; and a piston rod attached to said first and second pistons.