Abstract: Passenger seat for a system of passenger seats of an aircraft cabin, comprising: a seat body, an energy harvesting system for providing electrical energy, in particular for use in the passenger seat electrical net and/or aircraft electrical net, wherein an energy harvesting device of the energy harvesting system is provided to the seat body, wherein the energy harvesting device is adapted for capturing from the seat body ambient energy.

Abstract: Disclosed are various embodiments for a cabin management system that increases data throughput and decreases transmission delay via at least two dual channel time-triggered bus. In one embodiment, the cabin management system comprises a cabin management controller for controlling the cabin management system and interfacing with a plurality of avionics of an aircraft. The cabin management system further comprises a plurality of equipment controllers for generically interfacing with the cabin equipment of the aircraft. Additionally, the dual channel time-triggered data buses transmit data between the cabin management controller and the cabin equipment controllers based on a time triggered protocol.

Abstract: The invention relates to a breathing apparatus for providing a respiratory gas to a crewmember in a cabin of an aircraft, said breathable apparatus comprising an air inlet (5) for admission of ambient air in said breathing apparatus, an additional gas inlet (2) for admission of additional gas in said breathing apparatus, an outlet nozzle (4) for feeding said crew member with the respiratory gas comprising said ambient air and/or additional gas, said breathing apparatus further comprising neutralizing means (70, 141) for neutralizing at least partially the admission of said additional gas below a predefined cabin altitude (Z1).

Abstract: The Invention relates to a passenger cabin emergency oxygen device for an aircraft, comprising at least one electrically driven activation device for activating the emergency oxygen device, at least one energy storage device and a source of electrical energy. Said source of electrical energy and said energy storage device are coupled together for substantially constant energy transmission from the source of electrical energy to the energy storage device at a first energy level, an activation device and a controller are coupled together for signal transmission from the controller to the activation device, said activation device and said energy storage device are coupled together for energy transmission from the energy storage device to the activation device at a second energy level which is higher than the first energy level.

Abstract: The invention relates to a respiratory gas supply circuit for an aircraft carrying passengers and/or crewmembers (1) in a cabin, including a source of breathable gas (R1, R2), at least one supply line (20) connected to said source, a first actuating device (60, 12) provided on said supply line to open at least partially or close the supply of breathable gas, a respiratory device (50) adapted to be worn on one passenger or crewmember's face, said respiratory device being connected to said supply line, and further including an ambient air inlet (40), said respiratory device providing to said one passenger or crewmember a respiratory gas to be inhaled corresponding to ambient air and/or breathable gas, wherein said ambient air inlet further includes a second actuating device (4, 11) to open at least partially or close said ambient air inlet; and, both said first and second actuating devices are operated so that at least one of said first and second actuating devices is closed at each instant of time.

Abstract: The invention relates to a respiratory gas supply circuit for an aircraft carrying passengers, comprising a pressurized source of respiratory gas (R1, R2) and a supply line (2, 3), said circuit further comprising on said supply line a regulating device (12, 30) for controlling the supply in respiratory gas to said passengers, wherein said regulating device further comprises an electro-valve (12) controlled by a pulse width modulation signal provided by an electronic unit (20).

Abstract: A demand and dilution mask regulator comprising an oxygen feed circuit and a dilution circuit for supplying air. The oxygen feed circuit and the dilution circuit are connected to a mixing chamber (35). In the dilution circuit, the inhaled breathe-in air flow rate is measured through a capillary duct (43) connected to a Venturi construction (41). A method of regulating the flow rate of additional oxygen uses flow rate data measured through the capillary duct (43) for controlling the oxygen flow rate to be supplied to the mixing chamber (35).

Abstract: The invention relates to a respirator mask with hygienic protection. More specifically, the invention relates to a respirator face mask (2) which provides physiological protection, comprising: an oronasal face piece (10), a semi-flexible lip element (6) which is used to position the oronasal face piece (10) on the user's face (1), and hygienic protection means (4) which are removably-positioned at least partially inside the mask (2). The aforementioned removable protection means (4) comprise (i) a first part (4a) which provides hygienic protection and (ii) a second part (4b) which maintains the hygienic protection means (4) inside the mask (2), said second part (4b) co-operating elastically with the above-mentioned semi-flexible lip element (6) or the face piece (10).

Abstract: The invention concerns a protective headgear comprising a respirator (2) capable of being connected to a breathing mixture source, an eye protecting shield (5) and first (32) and second (56) lock elements, respectively located on the respirator (2) and on the shield (6) and adapted to co-operate with each other to secure the shield (6) to the respirator (2), when the respirator is in its use position on the user's face, the first (32) and second (56) lock elements being adapted to be mutually engaged and interlocked by a movement bringing the shield (6) closer to the respirator (2), from above.

Abstract: Systems for supplying emergency oxygen or other gases to persons are addressed. The systems may include pod assemblies mounted on fixed-position masts between or adjacent passenger seats or pop-up modules installed within upper portions of seat backs. The pod assemblies and pop-up modules additionally may include other passenger-service equipment. Also optionally included in the systems are modular central gas supplies and alternative oxygen mask designs for passengers.

Abstract: A storage case for aircraft flight personnel's goggles is provided. The storage case has a case bottom and two doors. Each door has a closure adapted to maintain the goggles in the case between the case bottom and the doors.

Abstract: A breathing gas feed assembly for the flight crew of an airplane comprises an emergency breathing mask and a stowage box for the mask. The box is adapted to receive the mask diagonally and it is closed by two doors hinged about respective hinge axes situated on two adjacent edges of the box.

Abstract: The invention relates to a return device for returning a valve of an internal combustion engine, the device comprising: a piston secured to said valve and mounted to slide in a cylinder; a pressurized fluid feed connected to said cylinder via a feed channel; and a pressure relief valve connected to said cylinder via a discharge channel and arranged to limit the pressure prevailing in the cylinder to a predetermined maximum pressure; and means for regulating the maximum pressure as a function of the feed pressure using an affine-type relationship. The invention also relates to an internal combustion engine equipped with such a device.

Abstract: A demand and dilution mask regulator comprising an oxygen feed circuit and a dilution circuit for supplying air. The oxygen feed circuit and the dilution circuit are connected to a mixing chamber (35). In the dilution circuit, the inhaled breathe-in air flow rate is measured through a capillary duct (43) connected to a Venturi construction (41). A method of regulating the flow rate of additional oxygen uses flow rate data measured through the capillary duct (43) for controlling the oxygen flow rate to be supplied to the mixing chamber (35).

Abstract: In order to protect the passengers of an airplane against the effects of depressurization of the cabin, breathing masks are fed with oxygen at a rate which is an increasing function of cabin altitude. Oxygen is fed via a constriction and an economizer bag, and an initial fraction only of the gases breathed out is caused to be re-breathed by collecting the initial fraction in a flexible re-breathing bag in communication with the mask. The re-breathing bag has a volume in inflated state which is not less than the total dead volume of the respiratory tract and the mask. A protective apparatus comprises a feed control unit supplying an adjustable flow rate to masks connected to a general pipe via respective economizer bags. A re-breathing bag retards re-breathing and stores only an initial fraction of the gases breathed out on each exhalation.

Abstract: The gauge comprises concentric inner and outer tubes made of insulating material, with two capacitors each constituted by a set of electrodes, each set having at least one pair of two electrodes in strip form extending along the gauge and placed facing each other on the facing walls of the inner and outer tubes.

Abstract: The demand regulator has a duct communicating a pressurized breathing gas admission with a tube connected to the inside of a breathing mask. Dilution air may be added to the breathing gas. A breathe-out valve opens from the tube to atmosphere. A manual control member has a normal position causing operation without an over pressure above atmosphere and with dilution and an emergency position causing the tube to be fed with pure breathing gas (typically oxygen) at high pressure. Operation with over pressure gas feed is prevented mechanically or pneumatically so long as the mask is being stored.

Abstract: Individual respiratory gas supply device comprising a respiratory mask and a facial respirator of the cannula or respiratory flexible oro-nasal shell type for comfortably supplying a subject with respiratory gas during a high-altitude flight. The respiratory mask and the facial respirator are adapted so that in the event of de-pressurization or the presence of toxic gases, the subject equips himself with the respiratory mask possibly after having previously removed the facial respirator. Switching means make it possible to cut off the oxygen supply of the facial respirator and dispense oxygen to the regulator when the subject is equipped with the respiratory mask.

Abstract: A breathing apparatus for an aircraft crew member has a breathing mask provided with a demand regulator and connected to a source of breathing gas, such as a pressurized oxygen cylinder or preferably an OBOGS. The apparatus includes an individual buffer plenum specific to the mask on a line for feeding the regulator of the mask from the source. The volume of the plenum is sufficient to provide for at least two typical breaths of the mask wearer in succession. A non-return check valve is located between the plenum and the source.

Abstract: A demand regulator with air dilution for regulating the pressure and flow of a respiratory gas comprises an inlet for additional gas and an outlet leading to a respiratory mask, and also dilution means. Control means switch a supply of pressurized additional gas between at least two passages. At least one of these passages corresponds to an economy flow and has a restricted cross section for limiting the flow of additional gas transmitted to the inlet. The other passage has a cross section which is such that the additional gas has a maximum flow in order to supply the user with additional gas in a physiologically sufficient manner.