Patent attributes
A fire extinguisher includes a body including a chamber receiving fire extinguishing powders. An upper cover includes a gas inlet passage and a gas intake in communication with the gas inlet passage. The upper cover further includes a through-hole aligned with the gas intake. A high-pressure steel bottle is coupled to the upper cover. The spring, when not compressed, holds the piercing needle in the gas intake and the through-hole such that the piercing needle will not pierce into a preserved opening of the high-pressure steel bottle. A pressing rod is pivotably connected to the upper cover. A switch handle is operably connected to the pressing rod. If a pin restraining movement of the switch handle is removed, when switch handle is operated to drive the pressing rod to pivot, the piercing needle is actuated by the pressing rod to pierce into the preserved opening of the high-pressure steel bottle.
