Pneumatic spring assembly
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United States of America Patent
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Issued Date -
Jan 29, 2004
app pub date -
Jul 22, 2003
filing date -
Jul 5, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The invention relates to a pneumatic spring assembly comprised of at least one pressure reservoir (1) with a connection to the chassis, with a roll-off piston, a pneumatic spring bellows (2), which encloses a volume-elastic air chamber (3), and with a shock absorber comprising, in turn, a reservoir tube and a piston rod (12) that dips into the reservoir tube in a sliding manner. The pressure reservoir (1) comprises a pressure chamber (4) and a, for the most part, pot-shaped accommodating chamber (5), whereby a shock-absorber bearing (6) comprising an elastomer body (7) and a supporting piece (8) can be placed inside said accommodating chamber (5). The inventive pneumatic spring assembly is characterized in that the pressure reservoir (1) is provided with a dynamic seal (16) in the area of the bottom opening (11) of the accommodating chamber (5). Said seal seals the pressure chamber (4) whereby also sealing the volume-elastic air chamber (3) and, in fact, while simultaneously adapting to the amplitudes and movements of the piston rod (12).
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