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| Number | Title | Issue Date |
| 7950987 | Aircraft cabin pressure control system and method that improves cabin pressurization during take-off A cabin pressure control system and method improves cabin pressurization during aircraft take-off operations. The cabin pressure control system sets a cabin pressurization rate limit based on a cabin pressurization rate error. The cabin pressurization rate error is ... | 05/31/2011 |
| 7837541 | Method for reducing outside air inflow required for aircraft cabin air quality A method for reducing outside air inflow required for aircraft passenger cabin air quality is provided. The method determines when passenger cabin air quality is the driving outside air inflow requirement and reduces the outside air inflow to that required for passe... | 11/23/2010 |
| 7670214 | Systems and methods for intelligent alerting for cabin altitude depressurization Methods and systems for providing a depressurization alert. An example method includes receiving a cabin depressurization discrete signal, determining if the cabin depressurization discrete signal is valid, and issuing a cabin depressurization alert, if the cabin de... | 03/02/2010 |
| 7462098 | Cabin pressure control system and method that accommodates aircraft take-off with and without a cabin pressurization source An aircraft cabin pressure control system implements control logic that significantly reduces potentially uncomfortable pressure bumps that can occur during aircraft take-off rotation both with and without cabin pressuring fluid flowing into the aircraft cabin. The ... | 12/09/2008 |
| 7429198 | Electrode connector for ring laser gyros A laser block assembly (LBA) gas fill process device with improved cathode electrode connectors. An example device includes a gas fill component that attaches to an LBA under test and electrical connectors that receive a voltage bias from a voltage source and apply ... | 09/30/2008 |
| 7311740 | Snap acting split flapper valve A filter bypass valve is disposed in parallel with an aircraft cabin air filtration system air filter. During normal operation, air is filtered through the air filter at an air flow that meets air flow requirements of the system. The bypass valve is designed to rema... | 12/25/2007 |
| 7264017 | Dual-actuator aircraft environmental control system valve A regulator valve includes dual actuators that operate according to different principles to position a valve element to either an open or a closed position. One actuator, which is an electromechanical actuator, operates in response to electrical command signals. The... | 09/04/2007 |
| 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 |
| 7207524 | Device for warning of differential pressure during the opening of a pressurized closing device pertaining to an opening in the fuselage of an aeroplane An apparatus warns of differential pressure during the opening of a pressure-loaded door that closes an opening in an aircraft fuselage. An air guide passage extends from the side with higher pressure to the side with lower pressure. The air guide passage is closeab... | 04/24/2007 |
| 7171819 | Indirect regenerative air cycle for integrated power and cooling machines An integrated power and cooling machine having an indirect regenerative air cooling feature may be useful for providing power and environmental control to both ground vehicles, such as tanks, and aircraft, such as helicopters and airplanes. The integrated power and ... | 02/06/2007 |
| 7101277 | Control system and method for controlling aircraft cabin altitude during aircraft operations above maximum certified aircraft altitude A cabin pressure control system and method extends the cabin pressure control logic beyond the original maximum certified altitude of the aircraft, without having to update the control logic. Thus, the control system provides an independent means of limiting cabin-t... | 09/05/2006 |
| 7089751 | Automatic fresh air exchange system A system and method for automatically providing a fresh air exchange to a cargo unit is disclosed. The system includes a single gas sensor, preferably a carbon dioxide sensor, for providing an input to a controller which derives the carbon dioxide and oxygen levels ... | 08/15/2006 |
| 7069728 | Multi-position BOV actuator A multi-position pressurized fluid actuator is mounted for movement in a casing. The actuator includes at least one selectively openable opening at a location corresponding to an intermediate position through which pressurized fluid can be selectively bled from the ... | 07/04/2006 |
| 7066808 | Aircraft cabin multi-differential pressure control system An aircraft pneumatic cabin pressure control system that is adapted to prevent the difference between cabin pressure and atmospheric pressure from exceeding a threshold value wherein the threshold value varies in relation to aircraft altitude. In some instances the ... | 06/27/2006 |
| 7032767 | Pressurized container for storing pressurized liquid and/or gaseous media, consisting of a plastic core container which is reinforced with fibre-reinforced plastics and a method for producing the same A plastic core container is reinforced with a fibre-plastic composite for storing pressurized liquid and/or gaseous media and includes one or more connecting parts located in the neck and/or base and/or cylindrical container part. At least one connecting part is con... | 04/25/2006 |
| 7013969 | Low noise level HVAC system having displacement with induction A displacement ventilation, low noise level, mixed air, HVAC system for ventilating a commercial or educational facility. The system includes a central HVAC air handling unit containing first and second duct works for receiving and transmitting conditioned air to ro... | 03/21/2006 |
| 7008314 | Aircraft modular cabin pressure regulator One embodiment relates to a modular cabin pressure regulator that can receive its destination parameter and control settings from an avionics system or a manual selector and display. The modular pressure regulator includes a removable selector, a controller, and a m... | 03/07/2006 |
| 6979257 | Cabin pressure control method and apparatus using all-electric control without outflow valve position feedback A pressure control system including an inflow unit for admitting pressurized air into a cabin, an outflow unit including a motor for operating a valve to discharge air from the cabin at a predetermined rate based on an motor control signal that sets the motor speed,... | 12/27/2005 |
| 6959254 | Method and device for controlling and/or diagnosing a control system that influences a mass flow A method and a device are proposed for controlling and/or diagnosing a control system influencing a mass flow. In this context, a correction value is calculated, which corrects the controlling, or is evaluated for diagnostic purposes. The correction value, in this c... | 10/25/2005 |
| 6951317 | Vehicle, lightweight pneumatic pilot valve and related systems therefor A vehicle, such as a missile, with a pilot valve system controls the vehicle's thrust valves despite a hostile propellant gas environment. The pilot valve system can have one or more pilot valves. Using refractory elements, the pilot valve ball reciprocates between ... | 10/04/2005 |
| 6945278 | Fully integrated aircraft cabin pressure control system valve An aircraft cabin pressure control system valve integrates three cabin pressure control functions, main cabin flow control, positive pressure relief, and negative pressure relief, into a single valve package. The valve includes a control valve that is used for main ... | 09/20/2005 |
| 6928832 | Electrically driven aircraft cabin ventilation and environmental control system The present invention relates to an electrically driven aircraft cabin and ventilation and environmental control system. The system includes at least one inlet for capturing ram air, an electrically driven compressor for pressurizing the ram air, and a thermal condi... | 08/16/2005 |
| 6796527 | Integrated air turbine driven system for providing aircraft environmental control The present invention relates to an integrated air turbine driving system for providing aircraft environmental control. The system has at least one air driven turbine for providing power to an aircraft mounted accessory drive and for providing heated air to an aircr... | 09/28/2004 |
| 6782701 | Master-slave engine bleed flow sharing control method and system A system and method for an engine bleed flow-sharing control system is disclosed. For a multi-engine bleed system, one (10) of the engines is selected as the master channel (15) such that the bleed air supply pressure of the control system receiving th... | 08/31/2004 |
| 6746322 | Cabin pressure control system, method of controlling the actual pressure inside a cabin and outflow valve The invention relates to a cabin pressure control system (10), a method of controlling the actual pressure inside a cabin (50) and an outflow valve (14; 15; 16; 17), especially for use in said system (10) or said method. The invention pro... | 06/08/2004 |
| 6676504 | Controller, cabin pressure control system and method of controlling cabin pressure The present invention relates to a controller (11), a cabin pressure control system (10) and a method for controlling pressure in a cabin (30), especially an aircraft cabin. In accordance with the invention the controller (11) comprises a channel (15, 16)... | 01/13/2004 |
| 6544114 | Method and system for controlling an air mass flow in an aircraft An air mass or volume flow in an aircraft is controlled in a closed loop control system. A controllable air distribution network is formed by pipes, ducts, valves, fans, a fresh air supply and climate packs. The generation of a closed loop control signal ... | 04/08/2003 |
| 6449963 | Aircraft air conditioning system and method An air conditioning system and method are provided for use in an aircraft having a pressurized area and an unpressurized area. The air conditioning system includes an air conditioning pack located in the unpressurized area of the aircraft that conditions ... | 09/17/2002 |
| 6241599 | Pressure regulating system The present invention relates to a pressure regulation system for maintaining the air pressure within a defined space at a substantially constant level. The pressure regulation system comprises a housing and a flexible diaphragm within the housing which d... | 06/05/2001 |
| 6230138 | Method and apparatus for controlling multiple speech engines in an in-vehicle speech recognition system Disclosed herein is a method and apparatus for controlling a speech recognition system on board an automobile. The automobile has one or more voice activated accessories and a passenger cabin with a number of seating locations. The speech recognition syst... | 05/08/2001 |
| 6058725 | Aircraft hot-air supply system The present invention relates to a hot-air supply system for an aircraft equipped with at least one engine (2) with a fan (3) and compressors (4). According to the invention, the regulating devices (14, 15, 16) intended to regulate the flows of hot air an... | 05/09/2000 |
| 5967461 | High efficiency environmental control systems and methods A high efficiency environmental control system uses air exhausted from a pressurized cabin to cool compressed air entering the cabin. Air exhausted from the cabin may flow directly from the cabin through a heat exchanger which cools the compressed air ent... | 10/19/1999 |
| 5791982 | System for improving the well-being of humans in a commercial aircraft A system (10) for controlling the quality of the cabin air in an aircraft of the type having a cabin air recirculating system (37, 43) which introduces selectable amounts of fresh outside air, an arrangement (25, 27) for venting controllable quantities of... | 08/11/1998 |
| 5670714 | Air-pollution reduction method and system for the interior of an automobile The present invention provides a method of reducing the level of air pollution in the interior of a vehicle, the vehicle having a detection system for detecting one or more conditions and an air intake system leading to the interior of the vehicle, the ai... | 09/23/1997 |
| 5520578 | Aircraft cabin pressure control system A cabin pressure control system for aircraft includes a controller for receiving and comparing set point and actual values for an aircraft cabin pressure. A speed-controlled drive for an air outlet valve is connected to the controller for triggering the v... | 05/28/1996 |
| 5516330 | Air conditioning system for a passenger aircraft An air conditioning system for a pressurized aircraft body includes an air flow closed loop into which fresh air may be introduced either through a fresh air treatment unit or through a trim valve or through both. A first series connection of system compo... | 05/14/1996 |
| 5482229 | Apparatus for generating energy on board of an aircraft An apparatus for generating or recovering energy on board an aircraft effectively utilizes the cabin exhaust air stream, which has a high thermal energy and a differential pressure, before it is discharged into the environment outside the aircraft. In thi... | 01/09/1996 |
| 5297987 | Pressure control servo loop A pressure control servo system for regulating cabin pressure in jet airplanes. In the preferred embodiment, the system comprises a first summing network, which sums data from a air data computer (ADC), a flight deck (FD), and a flight management computer... | 03/29/1994 |
| 5273486 | Adaptive aircraft cabin pressure control system An adaptive aircraft cabin pressure control system is disclosed that customizes basic ascent and descent schedules to accommodate variable requirements of specific airlines, the airlines' route structures, and regional air traffic control standards. The s... | 12/28/1993 |
| 5186681 | Aircraft cabin pressure control for ascents and descents The rate of change of cabin air pressure in an aircraft cabin during aircraft ascent and descent is controlled as a function of a ratio which is equal to (Pld -Pc)/(Pld -Pa) during descent, and is equal to (P | 02/16/1993 |
