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| Number | Title | Issue Date |
| 8015973 | System and method for aircraft cabin atmospheric composition control Method and arrangement for adjusting nitrogen and oxygen concentrations within regions of an aircraft. The method includes separating nitrogen from ambient air onboard an aircraft thereby establishing a high-concentration nitrogen supply and then dispensing high-con... | 09/13/2011 |
| 7810498 | Volume expansion system for breathing gas in closed-circuit breathing apparatus A volume expansion system increases the storage volume for breathing gas in a closed-circuit breathing gas apparatus. A flow controller is coupled to an inhalation side of the closed-circuit breathing gas apparatus and is also coupled to an expandable reservoir. The... | 10/12/2010 |
| 7784462 | Oxygen supply and distribution system for a passenger aircraft Aircraft passengers who require a therapeutic oxygen supply independently of the prevailing cabin pressure, as distinguished from an emergency oxygen supply that depends on an inadequate cabin pressure, can breath therapeutic oxygen and/or emergency oxygen depending... | 08/31/2010 |
| 7343918 | Breathing gas feed assembly for aircraft flight crew, and a stowage box for an emergency breathing mask 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 ... | 03/18/2008 |
| 7341072 | Oxygen supply system having a central flow control unit The present invention is a centralized flow control unit (CFCU) for regulating oxygen flow in a multiple user emergency oxygen distribution system in passenger aircraft. Upon activation, the CFCU initially allows unregulated flow of oxygen to surge into the distribu... | 03/11/2008 |
| 7331345 | Demand regulator protective bellows A self contained breathing apparatus (SCBA) served by a source of breathing gas with a mask and a demand regulator connected to the mask. The regulator has a flexible diaphragmatic member having a side exposed to pressure differentials to cause a valve mechanism to ... | 02/19/2008 |
| 7255104 | Breathing gas supply system A breathing gas supply system for supplying breathable gas in an aircraft includes an oxygen enriching apparatus which is operable in at least two modes to provide product gas with varying oxygen concentrations. A first feed line feeds more highly enriched product g... | 08/14/2007 |
| 7246620 | System for monitoring pilot and/or passenger oxygen saturation levels and estimating oxygen usage requirements A noninvasive system for monitoring the oxygen saturation level of a person subjected to reduced atmospheric pressure for avoiding hypoxemia. The system monitors a person's oxygen saturation level, comparing the saturation level to a predetermined level. When the me... | 07/24/2007 |
| 7165546 | Nitrous oxide based oxygen supply system A self-contained system which converts nitrous oxide to a breathable gas mixture of nitrogen and oxygen. In the preferred embodiment of the present invention, a portable system is disclosed wherein liquefied nitrous oxide is converted to a breathable gas mixture of ... | 01/23/2007 |
| 7093597 | Respiratory equipment Respiratory apparatus including stowage equipment is addressed. The equipment may include a non-rigid bag covering at least part of an oxygen mask. The bag additionally may have an opening through which a portion of the mask protrudes, thereby facilitating its grasp... | 08/22/2006 |
| 7089940 | Balanced valve device and breathing apparatus comprising such valve device A valve device, particularly for a breathing regulator for divers, including an inlet chamber which can be connected to a source of gas under super-atmospheric pressure, and an outlet chamber which is under a regulated pressure. A seating, which is movable under the... | 08/15/2006 |
| 7082944 | Changeover valve and dual air supply breathing apparatus A dual air supply breathing apparatus that allows a user to quickly and easily switch between two or more sources of air or compressed gas, such as filtered air from a Powered Air Purifying Respirator (PAPR) and compressed air from a Self-Contained Breathing Apparat... | 08/01/2006 |
| 6966317 | Individual respiratory gas supply device including a respiratory mask and a facial respirator 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 an... | 11/22/2005 |
| 6955710 | On-board oxygen production system for aircraft, in particular long-range aircraft Method and system on board an aircraft for the production of an oxygen-enriched gas stream from an oxygen/nitrogen gas mixture, particularly air, comprising at least one adsorber containing at least one adsorbent for adsorbing at least some of the nitrogen molecules... | 10/18/2005 |
| 6948498 | Process and installation for the distribution of air enriched in oxygen to passengers of an aircraft According to this process, there is supplied to the passengers a first fraction of air enriched in oxygen from independent supply elements, in particular high pressure cylinders (16), during a descent phase of the aircraft between a normal cruising altitude a... | 09/27/2005 |
| 6929006 | Device and process for metering breathing gas A respirator with a tidal volume-measuring device (6) between a respiration bag (8) and a patient adapter (2) provides accurate metering of the tidal volume. The device includes a first pressure-measuring device (4) and a breathing gas in... | 08/16/2005 |
| 6913016 | Valve manifold assembly A valve manifold assembly having a valve body with at least one chamber defined therein. The chamber has at least one inlet and at least one outlet and has at least one opening. A poppet is disposed in the chamber. The poppet slides in the chamber between a first po... | 07/05/2005 |
| 6871645 | Reduced-oxygen breathing device The present invention includes a non-rebreathing circuit coupled with computer-controlled gas adjustments. Ambient air is diluted with nitrogen on a breath-by-breath basis to provide precise control over the inspired concentration of oxygen/nitrogen mixture, thereby... | 03/29/2005 |
| 6701923 | Process and installation for the distribution of air enriched in oxygen to passengers of an aircraft According to this process, there is supplied to the passengers a first fraction of air enriched in oxygen from independent supply elements, in particular high pressure cylinders (16), during a descent phase of the aircraft between a normal cruising altitu... | 03/09/2004 |
| 6688308 | Method of testing an aircraft oxygen supply system A system and method of performance testing an aircraft's oxygen supply system where demand is assured by in use performance testing and monitoring by a controller and monitor for the partial pressure of oxygen necessary to meet demand in a pressurized air... | 02/10/2004 |
| 6612307 | Oxygen conserver An oxygen conserver having sensing and delivery ports simultaneously connected with a patient by a dual cannula. Inhalation by a patient produces a partial vacuum to move a sensing diaphragm to a venting position and cause a delivery diaphragm to move to ... | 09/02/2003 |
| 6425394 | Hanger assembly for passenger oxygen masks A passenger oxygen mask assembly (93) is provided which is adapted to be supported on an existing mask-supporting fixture (16). The assembly (93) includes a hanger (30, 64) having a fixture attachment portion (32, 66) and a mask-retaining portion (34, 68)... | 07/30/2002 |
| 6401714 | Self contained breathing apparatus A self contained breathing apparatus includes a pressure vessel which holds a supply of breathing air. The pressure vessel is in fluid communication through a first stage pressure regulator with a second stage breathing regulator. The breathing regulator ... | 06/11/2002 |
| 6347627 | Nitrous oxide based oxygen supply system A self-contained system which converts nitrous oxide to a breathable gas mixture of nitrogen and oxygen. In the preferred embodiment of the present invention, a portable system is disclosed wherein liquefied nitrous oxide is converted to a breathable gas ... | 02/19/2002 |
| 6318364 | Modular drop out container for aircraft oxygen masks A modular, dropout passenger oxygen mask container (10) is provided which allows the container (10) to be used in a variety of different aircraft mask deployment areas presenting respective openings (20) without container modification. The container (10) ... | 11/20/2001 |
| 6302106 | Rebreather system with optimal PO2 determination A method and apparatus for a self contained underwater breathing apparatus in which a breathing gas is supplied to a flow loop from two separate gas sources each having a different oxygen fraction, and each controlled by separate mass flow controllers hav... | 10/16/2001 |
| 6089230 | Aircraft passenger oxygen delivery unit having shiftable oxygen generating candle An oxygen delivery unit (20) having a housing (22), a release plate (24), an oxygen generator (26), a respirator assembly (28), a release lanyard assembly (30), and an activation lanyard assembly (32) allows the use of generators (26) having longer operat... | 07/18/2000 |
| 6065473 | Non-contact gas dispenser and apparatus for use therewith A non-contact gas dispenser comprising a head set apparatus, a gas source and a conduit for directing the desired gas to a region proximate to the user's nose and mouth. The gas source preferably is a pressure swing adsorption apparatus that allows the us... | 05/23/2000 |
| 5964220 | Respiratory assistance apparatus A respitory assistance apparatus which includes: (a) a plurality of outputs (7.1 to 7.n), each of which can assist one patient; (b) a plurality of links (8.1 to 8.n) which respectively connect a respiratory gas source to one of the outputs of the apparatus; (c... | 10/12/1999 |
| 5924418 | Rebreather system with depth dependent flow control and optimal PO2 d e A method and apparatus for a self contained underwater breathing apparatus in which a breathing gas is supplied to a flow loop from two separate gas sources each having a different oxygen fraction, and each controlled by separate mass flow controllers hav... | 07/20/1999 |
| 5881725 | Pneumatic oxygen conserver A pneumatic oxygen conserver used with a single-tube cannula. The conserver includes a body having first and second cavities. A main diaphragm divides the first cavity into first and second chambers. An inlet passage delivers oxygen from a supply to the f... | 03/16/1999 |
| 5816244 | Modular structural system for personal service and oxygen dispensing system modules for use in transport aircraft with improved latch and testing capability The compression molded aircraft personal service unit and integrated oxygen dispensing system module housings are formed by compression molding of a sheet molding material. The integrated oxygen dispensing system module can be mounted separately in the ai... | 10/06/1998 |
| 5803062 | Compression molded integrated personal service and oxygen modules for use in transport aircraft with improved mask repacking and test access The compression molded aircraft personal service unit and integrated oxygen module housings are formed by compression molding of a sheet or bulk molding material. The integrated oxygen module can be mounted separately in the aircraft, or can be contained ... | 09/08/1998 |
| 5794616 | Use of multiple gas blends with a dive computer A multi-gas blending system for a diving profile is provided with three separate tanks, each having a different gas mix contained therein. The first tank, the primary tank, has a mix that is designed to be O2 rich for descending from the surfac... | 08/18/1998 |
| 5724961 | Valve arrangement and a breathing regulator which includes such a valve arrangement A valve arrangement intended particularly, but not exclusively, for use with a breathing regulator (1) for underwater breathing apparatus includes an outlet side, an inlet (11) through which gas can pass to the outlet side from a source of gas having a pr... | 03/10/1998 |
| 5701889 | Oxygen breathing controller having a G-sensor The oxygen breathing controller (10) of the present invention provides a two-stage inlet regulator. In addition, the oxygen breathing controller is provided with an aneroid sensor (100) and a G-sensor (80). The G-sensor has at least two diaphragms (92,93)... | 12/30/1997 |
| 5690097 | Combination anesthetic mask and oxygen transport system A system to provide supplemental oxygen to a patient via an oronasal mask and an oxygenation adaptor, the adaptor providing for countercurrent flow of fresh (oxygen-enriched) gas and exhaled gas with minimal mixing to reduce oxygen requirements. The Coand... | 11/25/1997 |
| 5662100 | Eductive pressure regulator An improved pressure regulator (60) is provided with an eductive flow to maintain the outlet pressure at increased flows through the regulator. The improved regulator broadly includes a body (61) provided with a bore. A valve seat (24) is movably mounted ... | 09/02/1997 |
| 5645055 | Oxygen breathing controller The oxygen breathing controller of the present invention provides a first inlet regulator and a second inlet regulator. The first inlet regulator is provided with a poppet with a diaphragm around its perimeter, and the second inlet regulator is controlled... | 07/08/1997 |
| 5642729 | Gas supply systems In an aircraft, a pressure swing adsorption system (23) is used both for removing carbon dioxide and water vapour from recycled cabin air and for producing in an emergency oxygen from pressurized engine bleed air.... | 07/01/1997 |
