A fire extinguisher includes a main dome surrounding an interior. An internal plate is mounted inside the interior of the main dome, dividing the interior into an internal space housing agent and a secondary internal space. The internal space housing agent and the secondary internal space are both pressurized above ambient. The secondary internal space is free of agent, and can be pressurized, e.g., to no less than the total pressure of the internal space housing agent.

A dispenser cap for a fire extinguisher includes a main body portion that has a generally hemispherical shape. The dispenser cap also includes a securing portion adjacent to the main body portion. The securing portion is configured to be removably attached to a dispenser of the fire extinguisher.

A fire extinguisher includes a container that has a chamber for holding a fire-extinguishing agent. The container also includes a domed top portion and recessed bottom portion. The domed top portion includes a valve port, and the recessed bottom portion has an edge for standing the container generally upright. The fire extinguisher also includes a valve attached to the valve port of the container and a dispenser attached to the container for operating the valve. The dispenser also includes a handle and a pivotable trigger. Further, the fire extinguisher includes a gauge mounted within the recessed bottom portion of the container. The gauge is configured to display at least one characteristic of the chamber of the container. Also, the gauge is mounted above the edge of the recessed bottom portion.

A dispenser cap for a fire extinguisher includes a main body portion that has a generally hemispherical shape. The dispenser cap also includes a securing portion adjacent to the main body portion. The securing portion is configured to be removably attached to a dispenser of the fire extinguisher.

An Aerosol Fire Extinguisher with Trigger Sprayer that can be easily held in one hand that contains in one embodiment of the invention the fire extinguishing agent in a a bag under pressure in an aerosol can and can only be released by pulling the tab of the trigger assembly. In another embodiment of the invention the Aerosol Fire Extinguisher with Trigger Sprayer does not have a bag but utilizes traditional aerosol technology with unique gases. The trigger sprayer is open when the tab is pulled. The Aerosol Fire Extinguisher with trigger sprayer is cylindrical canister housing and a valve for directing the product flowing out of the can. Pulling the tab of the trigger assembly allows pivoting member of the trigger assembly to be able to press down on the stem of the mounting cup of the aerosol can which then allows the pressurized gas in the aerosol can to force the fire extinguishing liquid through the dip tube up through the direction hole into the direction chamber with pressure out the nozzle toward the fire. The user then sprays the fire with the extinguishing agent until the fire is out.

A fire extinguishing apparatus includes a structure defining a first chamber containing an electrically operable explosive device. The apparatus also has a piezoelectric cell capable of producing an electrical output in response to the impact upon the piezoelectric cell. The apparatus also has a container of nonflammable pressurized fluid in contact with the structure, and a mechanical detection mechanism with a thermal sensor for producing a mechanical force at an established temperature. The mechanical force produced by the mechanical detection mechanism is applied to the piezoelectric cell to produce the electrical output that actuates the electrically operable explosive device.

A method of operating safety mechanism includes extending a safety pin to block a poppet from opening a flow path from a pressure vessel in the event of the pressure vessel being unmounted from a bracket or in the event of the bracket being unmounted from a support structure. The method includes retracting the safety pin to allow free movement of the poppet for opening the flow path only in the event of the pressure vessel being mounted to the bracket and the bracket being mounted to a support structure.

A fire extinguisher includes a barrel having a chamber with an opening covered by an upper cover that includes a guide-out passage having a tubular portion with a guide-in groove and an inlet. A guide-out groove is defined above a sealing edge and extends to the outside. A gas inlet unit is mounted to the upper cover and is connected to a high pressure steel bottle. A high pressure gas in the high pressure steel bottle can flow through a gas inlet passage into the chamber. A guide-out unit includes a guiding tube unit connected to the tubular portion and a valve connected to the guiding tube unit. The valve is opened when subjected to a pressure from the high pressure steel bottle. A piston valve normally and sealingly abutting a sealing edge of the tubular portion can be moved to a position in sealing contact with the sealing edge.

A fire extinguisher includes a barrel having a chamber with an opening covered by an upper cover that includes a guide-out passage having a tubular portion with a guide-in groove and an inlet. A guide-out groove is defined above a sealing edge and extends to the outside. A gas inlet unit is mounted to the upper cover and is connected to a high pressure steel bottle. A high pressure gas in the high pressure steel bottle can flow through a gas inlet passage into the chamber. A guide-out unit includes a guiding tube unit connected to the tubular portion and a valve connected to the guiding tube unit. The valve is opened when subjected to a pressure from the high pressure steel bottle. A piston valve normally and sealingly abutting a sealing edge of the tubular portion can be moved to a position in sealing contact with the sealing edge.

Disclosed herein is an example method for expelling a fire suppressant from a container into a distribution manifold. The method includes generating a propellant gas that flows into the container via a first port of the container, thereby causing a pressure within the container to increase. The container includes the fire suppressant prior to the generation of the propellant gas. The method further includes, in response to the pressure within the container exceeding a threshold pressure, expelling the fire suppressant from a second port of the container into the distribution manifold. The generated propellant gas continues to flow into the container via the first port at least until substantially all of the fire suppressant included within the container prior to the generation of the propellant gas is expelled from the container via the second port. Example fire suppression systems are also disclosed herein.