Twin-tube type shock absorber
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United States of America Patent
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-
Jan 3, 1989
Grant Date -
N/A
app pub date -
Jun 23, 1987
filing date -
Jul 3, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The twin-tube type shock absorber wherein a piston-rod extends downward from a piston and penetrates a lower end portion of an outer shell. Pressurized gas in a reservoir chamber is positioned in an upper portion of the outer shell where the piston-rod does not penetrate the outer shell. Since a seal disposed between the piston-rod and the lower end portion of the outer shell is not exposed to the gas in the reservoir chamber, no gas leakage occurs through the portion where the piston-rod penetrates the outer shell. In addition, the piston-rod is connected to a member disposed on a wheel side of a suspension spring of a vehicle, so that vibrational characteristics of a vehicle body is improved and bubbling of a liquid in the outer shell is suppressed.
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