Patent ID: 7059592

Claim:
A gas cylinder comprising: a spindle for receiving a piston; a base tube formed on an outer side of the spindle and in a lower end of which one end of a piston rod whose other end is fixed in the piston, is fixed; a bushing formed in a contact portion between the spindle and the base tube; a cable whose one end is pulled by external force of a user; a release arm integrally having a cable hooking part for fixing one end of the cable on its upper side, and a rotational central part formed in a lower side of the cable hooking part, the rotational central part being rotated by pulling operation of the cable; a taper holder integrally having, in its inside, an arm guiding part for forming a sidewall of an arm receiving hole, for receiving the release arm in its inside, and an arm hooking end projected from an inner periphery of the arm guiding part, for hooking the rotational central part upon movement of the release arm, thereby being inserted into a tapered portion in an inside of an upper end of the gas cylinder; a pin pressing part additionally provided in form of a smooth curve shape together with the release arm, on an opposite side of the rotational central part; and a guiding plane-contacted with the pin pressing part upon movement of the release arm, and formed by being curved on an inner peripheral surface of the arm guiding part.