Gas spring
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United States of America Patent
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Aug 28, 2012
Grant Date -
Apr 16, 2009
app pub date -
Oct 14, 2008
filing date -
Oct 15, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A gas spring includes a rod body that has a base end side movable into and out of a cylinder body. The rod body is urged in a direction outward of the cylinder body by pressure from a gas sealed inside the cylinder body. A cylindrical cover body includes a base end portion connected to a distal end portion of the rod body that projects outside of the cylinder body. An end portion of the cover body receives a head end portion of the cylinder body inside a cylindrical cover member at an end portion of the cylinder body. The cover member covers a portion of the spring that would otherwise be exposed to the air between the end portion of the cover body and the end portion of the cylinder body when the cylinder body is contracted inside the cover body.
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