Gas cylinder
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United States of America Patent
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-
Nov 14, 2006
Grant Date -
Apr 1, 2004
app pub date -
Jun 27, 2003
filing date -
Jul 15, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a gas cylinder, for improving sealing characteristics of the gas cylinder and improving convenience in manufacturing, including: a valve having a gas opening/closing pin at a through hole in its center, for intermittently passing a gas, and additionally having a valve dividing body seated on a groove approximately in a lower part of the through hole; a spindle to an upper inside of which the valve is inserted; and a piston inserted to an inside of an open cylinder of the spindle, and having, a step threshold formed at a predetermined distance from an upper end, to which an O-ring for maintaining sealing is fit, and having another step threshold ranging from a lower side of the step threshold to a lower end on an inner lateral surface of the piston, to which an O-ring is fit.
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