Gas spring and method of manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Oct 19, 2006
app pub date -
Apr 19, 2005
filing date -
Apr 19, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A gas spring construction in which a cartridge is fit into each end of a straight sided tube and secured therein with a retaining ring snap fit into an internal groove at each end of said tube. One cartridge has a bore through which a piston rod presses while the other cartridge has a charging valve installed therein. A precharged auxiliary chamber is provided in the piston rod for bore sealed gas springs communicating with the space behind the piston to alleviate the vacuum developing as the piston is stroked to preclude drawing in contaminants. The gas pressure can be set to a level to create a desired spring rate of the gas spring.
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