Patent ID: 10603530

Abstract:
A fire extinguisher with an actuation mechanism includes a fire extinguisher canister filled under pressure with a fire suppressant in a manner forcibly causing the fire suppressant to be expelled from the fire extinguisher with substantial force upon release. An actuation mechanism is secured to the fire extinguisher canister for controlling expulsion of the fire suppressant from the fire extinguisher canister. The actuation mechanism includes a pneumatically controlled time delayed activation piston assembly that functions to control the release of the fire suppressant until desired by the user of the fire extinguisher. The pneumatically controlled time delayed activation piston assembly includes an actuator housing having a passageway in which a piston is positioned. The actuator housing includes a first end and second end, the first end of the actuator housing being covered with a first cap supporting a spring interposed between the piston and the first cap, and the second end of the actuator housing being provided with a second cap. The piston includes a first end with an annular shaped recess and a second end with a sealed piston head. The piston, under the control of balanced spring bias and pneumatic pressure, allows for time delayed release of the fire suppressant from the fire extinguisher canister.