Abrégé

Multi-shot fire metering assemblies and a method for releasing fire extinguishing fluid from a multi-shot fire metering assembly. A multi-shot fire metering assembly may include a first fluid container. The first fluid container may include a first payload area for storing a fire extinguishing fluid. The multi-shot fire metering assembly may include a second fluid container. The second fluid container may be positioned within the first payload area. The second fluid container may include a second payload area for storing the fire extinguishing fluid. The multi-shot fire metering assembly may include a first discharge outlet for directing the fire extinguishing fluid when released.

Classes IPC  ?

• A62C 3/00 - Prévention, limitation ou extinction des incendies spécialement adaptées pour des objets ou des endroits particuliers

Abrégé

Multi-shot fire metering assemblies and a method for releasing fire extinguishing fluid from a multi-shot fire metering assembly. A multi-shot fire metering assembly may include a first fluid container. The first fluid container may include a first payload area for storing a fire extinguishing fluid. The multi-shot fire metering assembly may include a second fluid container. The second fluid container may be positioned within the first payload area. The second fluid container may include a second payload area for storing the fire extinguishing fluid. The multi-shot fire metering assembly may include a first discharge outlet for directing the fire extinguishing fluid when released.

Classes IPC  ?

• A62C 35/02 - Matériel installé à demeure avec des réservoirs pour délivrer la substance extinctrice
• A62C 3/08 - Prévention, limitation ou extinction des incendies spécialement adaptées pour des objets ou des endroits particuliers dans les véhicules, p. ex. les véhicules routiers dans les avions
• A62C 35/10 - Réservoirs se brisant ou s'ouvrant sous l'action des flammes ou de la chaleur

Abrégé

A metering cargo fire inerting assembly is activated to supplement an initial release of fire extinguishing fluid into a cargo hold of an aircraft when a fire is detected during flight. The metering components of the fire inerting assembly control the temperature and pressure of the fire extinguishing fluid within a metering container. A heater element within the metering container controls temperature and pressure. A flow control metering orifice is immersed in a portion of the fire extinguishing fluid sealed by a hermetically sealed disc downstream of the metering orifice. A cutter with an internal fluid flow passageway can pierce the disc to release the fire extinguishing fluid under control of a timer attached to the metering container that can activate a pyrotechnic charge to drive the cutter for releasing the fire extinguishing fluid such as Halon 1301 to a discharge outlet for delivery to the cargo hold.

Classes IPC  ?

• A62C 35/13 - Matériel installé à demeure avec des réservoirs pour délivrer la substance extinctrice commandés par un signal émanant de la zone de danger avec une réserve limitée de substance extinctrice
• A62C 3/10 - Prévention, limitation ou extinction des incendies spécialement adaptées pour des objets ou des endroits particuliers dans les véhicules, p. ex. les véhicules routiers dans les navires

Abrégé

An emergency oxygen system for aircraft passengers includes a hermetically welded sealed oxygen cylinder of stainless steel, a welded metal diaphragm sealing a discharge port and an extended hermetically sealed capillary tube for charging the cylinder with pressurized oxygen. A hollow piston cutter is driven to pierce the metal diaphragm as part of a first passageway delivering oxygen to the passenger. A second passageway delivers any leaking oxygen to a release port when the piston cutter is in position. A method of filling the cylinder includes welding to the cylinder a member having a metal diaphragm of a predetermined rupturable characteristic and using the open capillary tube to fill oxygen in the cylinder and subsequently crimping a portion of the capillary tube to provide a hermetic seal. A pressure gauge can be hermetically sealed to the bottom of the oxygen cylinder.

Classes IPC  ?

• A62B 7/14 - Appareils respiratoires pour vol à haute altitude

Abrégé

A monitoring system and method for determining a concentration of a gas in an enclosed space includes a plurality of detector units with each detector unit having a thermal conductor detector for providing a signal representative of a thermal differentiation of a transmission of at least a portion of the gas across the thermal conductor detector. A probe units connect the enclosed space to provide the representative portions of the gas at different locations across the enclosed space to the thermal conductor detector. An adjustable flow meter provides a constant flow rate and each thermal conductor detector is maintained at a constant temperature above ambient. A data acquisition unit can format the signals so that a processor unit can provide a simultaneous measurement of the volumetric level of the gas in the enclosed space.

Classes IPC  ?

• A62C 3/08 - Prévention, limitation ou extinction des incendies spécialement adaptées pour des objets ou des endroits particuliers dans les véhicules, p. ex. les véhicules routiers dans les avions