Brakes – Internal-resistance motion retarder – Valve structure or location
Reexamination Certificate
2005-07-19
2005-07-19
Schwartz, Christopher P. (Department: 3683)
Brakes
Internal-resistance motion retarder
Valve structure or location
C188S282100
Reexamination Certificate
active
06918473
ABSTRACT:
A shock absorber has a pressure tube with a piston assembly slidably disposed within the pressure tube and attached to a piston rod. The piston assembly divides the pressure tube into an upper working chamber and a lower working chamber. The piston assembly includes a compression and a rebound valve assembly. The piston assembly also includes a housing attached to the piston rod which defines a pressure chamber within which is slidably disposed a piston to define upper and lower fluid chambers. The pressure chamber is in communication with the upper working chamber through a passageway extending through the piston rod. The housing, piston and fluid chambers provide two stage damping in rebound and compression with a smooth transition between soft and firm damping.
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Harness Dickey & Pierce PLC
Schwartz Christopher P.
Tenneco Automotive Operating Company Inc.
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