Gas spring with guide
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United States of America Patent
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May 21, 2013
Grant Date -
Mar 19, 2009
app pub date -
Sep 13, 2007
filing date -
Sep 13, 2007
priority date (Note) -
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Abstract
In at least one embodiment, a gas spring includes a casing having an inner surface defining in part a gas chamber, a piston rod and a seal. The piston rod is received at least partially in the casing for reciprocation along an axis between extended and retracted positions. The piston rod has an internal cavity defining a hollow space, a stop and a rod guide disposed adjacent to the inner surface of the casing to guide the reciprocation of the piston rod at least in part. The seal generally is provided between the piston rod and the casing to prevent gas leakage from the gas chamber.
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