Patent ID: 7134379
Filing Date: 2006-11-14
Classification: A47C,F16K,Y10T

Abstract:
1. A gas cylinder comprising: an integral type 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; a piston inserted to an inside the spindle, the piston having a first step threshold formed at a predetermined distance from an upper end, to which a first O-ring for maintaining sealing is fit, wherein the first step threshold is of a bending round shape for guiding position of the first O-ring, the piston further having a second step threshold to which a second O-ring is fit on an inner lateral surface of the piston, ranging from a lower side of the first step threshold up to a lower end; a cylinder formed on an inner peripheral surface of the spindle, for guiding the piston; a washer additionally formed on an upper end of the piston; a piston rod whose one end is inserted and fixed to the piston; and a base tube of a cylindrical shape, in a lower side of which the other end of the piston rod is fixed by means of a fixing clip, and whose inner peripheral surface guides up and down movement of the spindle.