Wheel-guiding pneumatic spring damper unit
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United States of America Patent
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Aug 30, 2011
Grant Date -
Sep 18, 2008
app pub date -
Nov 29, 2005
filing date -
Dec 11, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pneumatic spring and damper unit (1) has working chambers (2,3) which are filled with compressed air and are partially defined by rolled bellows or corrugated bellows. The working chambers are superimposed and connected through throttle valves, arranged inside a common pot-shaped cylindrical housing (4), and separated by a cylindrical piston (7), in such a way that one working chamber (2) is arranged on the front side of the piston and the other working chamber (3) is arranged on the rear side of the piston. The piston and the piston rod (5) are respectively sealed by roller bellows inside the cylindrical housing and guided therein, and the piston rod and the piston are interconnected by an articulation (6).
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