Brakes – Internal-resistance motion retarder – Motion damped from condition detected outside of retarder
Reexamination Certificate
2008-05-20
2010-02-02
Schwartz, Christopher P (Department: 3657)
Brakes
Internal-resistance motion retarder
Motion damped from condition detected outside of retarder
C188S282600
Reexamination Certificate
active
07654369
ABSTRACT:
A vibration damper piston includes a piston body with a bore from which first and second apertures respectively provide paths to first and second chambers of the vibration damper. A valve spool in the bore defines a pilot chamber and controls fluid flow between the first and second apertures. First and second springs bias the valve spool in opposing directions. A control orifice provides a continuous fluid path between the first chamber and the pilot chamber, and a variable orifice provides another fluid path between the second chamber and the pilot chamber. An actuator is operably connected to adjust the variable orifice in response to a control signal.
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Hamkins Eric Peter
Murray Todd Michael
Van Weelden Curtis L.
Haas George E.
HUSCO International Inc.
Quarles & Brady LLP
Schwartz Christopher P
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