A recharging nozzle, a fire extinguisher configured with a recharging nozzle, and a method of recharging a pressurized water fire extinguisher using the recharging nozzle where the recharging nozzle is configured to be insertable into an air pressure quick disconnect fitting connected to a source of pressurized air.

There is provided a fire extinguisher comprising a fire extinguishing agent; a first mechanism configured to operate said fire extinguisher via a manual operation; a second mechanism configured to operate said fire extinguisher automatically; and wherein said fire extinguisher comprises at least one detector to detect the existence of a fire and cause the operation of said second mechanism.

There is provided a fire extinguisher comprising a fire extinguishing agent; a first mechanism configured to operate said fire extinguisher via a manual operation; a second mechanism configured to operate said fire extinguisher automatically; and wherein said fire extinguisher comprises at least one detector to detect the existence of a fire and cause the operation of said second mechanism.

According to one aspect, a fire extinguisher includes a fire extinguisher reservoir and a fire extinguisher outlet burst disc that forms a discharge barrier between the fire extinguisher reservoir and a discharge head to retain a pressurized fire extinguishing agent within the fire extinguisher reservoir. The fire extinguisher actuator assembly includes a cutter positioned within the fire extinguisher proximate the fire extinguisher outlet burst disc. The fire extinguisher actuator assembly also includes a motorized activation device having a drive shaft. The motorized activation device is operable to rotate the drive shaft and push the cutter to pierce the fire extinguisher outlet burst disc, thereby releasing the pressurized fire extinguishing agent through the discharge head.

According to one aspect, a fire extinguisher includes a fire extinguisher reservoir and a fire extinguisher outlet burst disc that forms a discharge barrier between the fire extinguisher reservoir and a discharge head to retain a pressurized fire extinguishing agent within the fire extinguisher reservoir. The fire extinguisher actuator assembly includes a cutter positioned within the fire extinguisher proximate the fire extinguisher outlet burst disc. The fire extinguisher actuator assembly also includes a motorized activation device having a drive shaft. The motorized activation device is operable to rotate the drive shaft and push the cutter to pierce the fire extinguisher outlet burst disc, thereby releasing the pressurized fire extinguishing agent through the discharge head.

A portable fire extinguishing apparatus, which comprises a casing (20) and a cartridge (3) arranged inside the casing (20). The top end of the cartridge (3) is fixedly connected with the casing (20) through a snap ring (24); the bottom of the cartridge (3) is fixedly connected with the casing (20) through some nuts and bolts; and an explosion venting unit (2) is arranged at the jet end of the cartridge (3). Kinetic energy generated from explosion is consumed through shifting and limiting processes of the explosion venting units (2), therefore recoil force or forward impact force generated after explosion of explosives can be consumed or released, so that safe and effective explosion venting is achieved and hurt to human bodies or articles after explosion of grains is avoided.

A portable fire extinguishing apparatus, which comprises a casing (20) and a cartridge (3) arranged inside the casing (20). The top end of the cartridge (3) is fixedly connected with the casing (20) through a snap ring (24); the bottom of the cartridge (3) is fixedly connected with the casing (20) through some nuts and bolts; and an explosion venting unit (2) is arranged at the jet end of the cartridge (3). Kinetic energy generated from explosion is consumed through shifting and limiting processes of the explosion venting units (2), therefore recoil force or forward impact force generated after explosion of explosives can be consumed or released, so that safe and effective explosion venting is achieved and hurt to human bodies or articles after explosion of grains is avoided.

Fire extinguishing device (100). The invention is characterised in that the fire extinguishing device comprises a flask engagement means (110), arranged to engage with a flask (10) for compressed carbon dioxide and to hold the fire extinguishing device in an operating orientation in relation to such a flask; an actuating means (120), arranged to apply a pressure on a valve (13) of said flask when in said operating orientation so that the valve as a result of said pressure opens and carbon dioxide flows out from the flask, which actuating means in turn comprises a lever means (121) for transferring a force applied by a user within said actuating means (120) for applying said pressure; and a carbon dioxide directing means (130), arranged to direct a jet (20) of carbon dioxide flowing out from the flask when said valve is open.

Fire extinguishing device (100). The invention is characterised in that the fire extinguishing device comprises a flask engagement means (110), arranged to engage with a flask (10) for compressed carbon dioxide and to hold the fire extinguishing device in an operating orientation in relation to such a flask; an actuating means (120), arranged to apply a pressure on a valve (13) of said flask when in said operating orientation so that the valve as a result of said pressure opens and carbon dioxide flows out from the flask, which actuating means in turn comprises a lever means (121) for transferring a force applied by a user within said actuating means (120) for applying said pressure; and a carbon dioxide directing means (130), arranged to direct a jet (20) of carbon dioxide flowing out from the flask when said valve is open.

A method of manufacturing a self-expanding fire-fighting foam solution is disclosed. Here, the method can include purging air from a container, wherein the purging is performed via flowing an inert gas into the container, such that substantially inert environment is created within the container. In addition, the method can further include dispensing or filling a pre-determined amount of foam concentrate into a container, dispensing or filling a pre-determined amount of water into the container, and mixing the foam concentrate and water within the container, wherein the mixed foam and water within the inert container provide the self-expanding fire-fighting foam solution and having a pH ranging from about 6.8 to 7.8 moles per liter.