A gas-generating pyrotechnic composition has a high gas yield while having reduced generation of condensable species and a limited combustion temperature.

A container holding a fire suppressing powder has a top, a cylindrical sidewall and a bottom with a hole, the bottom having a score line defining a segment. An explosive material housing containing an explosive material is mounted to a head of a mounting member. The mounting member has a lower portion smaller in cross-sectional dimension than the head, depending downward from the head and extending through the hole in the bottom. A retainer is secured around the lower portion of the mounting member below the bottom to secure the mounting member to the bottom. A fuse extends through the hole in the bottom, a passage in the mounting member, and into the explosive material housing. A plate is mounted within the container a selected distance below the top, the plate being movable a short distance toward and away from the top in response to ignition of the explosive material.

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.

A combustible aerosol composition is disclosed including an oxidizer including potassium bromate, a fuel including potassium cyanurate, and a hydrated mineral composition including potassium hydromagnesite.

A combustible aerosol composition is disclosed including an oxidizer including potassium bromate, a fuel including potassium cyanurate, and a hydrated mineral composition including potassium hydromagnesite.

Extinguishing a fire by pressurizing a tank containing an extinguishing liquid. According to the invention, the tank containing the liquid is provided with an expulsion outlet at a front end, a gas generator (17) is installed at a rear end, and a diaphragm forming an inflatable bag (19) is installed inside the tank, being folded prior to triggering in a confinement space at the front of the gas generator, the outlet from the generator being associated with a deflector (47) including a rearwardly-directed ejection passage (49).

Extinguishing a fire by pressurizing a tank containing an extinguishing liquid. According to the invention, the tank containing the liquid is provided with an expulsion outlet at a front end, a gas generator (17) is installed at a rear end, and a diaphragm forming an inflatable bag (19) is installed inside the tank, being folded prior to triggering in a confinement space at the front of the gas generator, the outlet from the generator being associated with a deflector (47) including a rearwardly-directed ejection passage (49).

The present compact powder fire-extinguishing device comprises a container containing a fire-extinguishing powder, said container being in the form of a single-use cartridge (1) containing a fire-extinguishing powder (3), said cartridge being separable from the fire-fighting device by means of a reusable fast-action firing device (4), wherein the fire-extinguishing powder (3) is disposed inside of a casing (2) of the cartridge (1) in a polymer tube (5), one end (6) of which is fastened at an outlet of the casing (2) of the cartridge (1), about the periphery of said casing, and the second end of the tube (5) abuts a sleeve (7) and is configured as a piston (8) having an aperture (9). Within the casing (2) of the cartridge (1) are provided means that generate a propulsive charge and are configured as a striker-type igniter-percussion cap (15) and a pyrotechnic gas generator (16) disposed one after the other, said gas generator being connected to the cavity of the sleeve (7), and the other end of the cartridge (1) is provided with a contoured surface (18) and is connected to the firing device (4) that comprises a mechanism for fastening and discharging the cartridge. Furthermore, the firing device (4) is provided with a striker trigger mechanism that comprises a head (30), a flat striking spring (32) having a striker (33), a hammer (38) connected to a trigger (41), and a safety catch (46).

The present compact powder fire-extinguishing device comprises a container containing a fire-extinguishing powder, said container being in the form of a single-use cartridge (1) containing a fire-extinguishing powder (3), said cartridge being separable from the fire-fighting device by means of a reusable fast-action firing device (4), wherein the fire-extinguishing powder (3) is disposed inside of a casing (2) of the cartridge (1) in a polymer tube (5), one end (6) of which is fastened at an outlet of the casing (2) of the cartridge (1), about the periphery of said casing, and the second end of the tube (5) abuts a sleeve (7) and is configured as a piston (8) having an aperture (9). Within the casing (2) of the cartridge (1) are provided means that generate a propulsive charge and are configured as a striker-type igniter-percussion cap (15) and a pyrotechnic gas generator (16) disposed one after the other, said gas generator being connected to the cavity of the sleeve (7), and the other end of the cartridge (1) is provided with a contoured surface (18) and is connected to the firing device (4) that comprises a mechanism for fastening and discharging the cartridge. Furthermore, the firing device (4) is provided with a striker trigger mechanism that comprises a head (30), a flat striking spring (32) having a striker (33), a hammer (38) connected to a trigger (41), and a safety catch (46).