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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8087424 | Subsea valve actuator apparatus A subsea valve actuator apparatus is disclosed for actuating a subsea valve. The valve actuator apparatus includes a housing which defines an enclosure and a rim. A cover cooperates with the rim for sealing the enclosure. A gearbox is disposed within the enclosure t... | 01/03/2012 |
| 7793680 | Electromechanical regulator with primary and backup modes of operation for regulating passenger oxygen The electromechanical regulator for passenger oxygen is a hybrid oxygen regulator that provides for electronic or mechanical regulation of oxygen flow. The electronic portion of the regulator consists of an inlet solenoid valve, an outlet solenoid valve, a cabin pre... | 09/14/2010 |
| 7789101 | Oxygen supply system having a central flow control A Regulator-Oxygen (ROX) Unit for regulating oxygen flow in an emergency oxygen distribution system in passenger aircraft initially allows unregulated surge of oxygen to purge ambient air from the system. After sufficient pressure is achieved in the system, the ROX ... | 09/07/2010 |
| 7604019 | Electromechanical regulator with primary and backup modes of operation for regulating passenger oxygen The electromechanical regulator for passenger oxygen is a hybrid oxygen regulator that provides for electronic or mechanical regulation of oxygen flow. The electronic portion of the regulator consists of an inlet solenoid valve, an outlet solenoid valve, a cabin pre... | 10/20/2009 |
| 7398794 | First stage pressure reducing valve having a tubular plug, particularly for regulators of scuba breathing apparatus The invention relates to a first stage pressure reducing valve having a tubular plug, particularly for regulators of scuba breathing apparatus. According to the invention, at least a portion of the outer surface of the valve has fins (19, 19′) for heat exch... | 07/15/2008 |
| 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 |
| 7299817 | Passive, double acting, vacuum actuated vent valve A valve is provided for use on a control moment gyroscope (CMG) having a housing separating an internal environment from an external environment. The valve includes a valve housing, a valve element, and bellows. The valve housing is configured to couple to the CMG h... | 11/27/2007 |
| 7209806 | Self-contained electronic pressure monitoring and shutdown device The invention is a self-contained process shutdown device that detects abnormal pressures and initiates shutdown by removing the pneumatic or hydraulic pressure needed for a given process or flow to continue. The process' pressure is detected by means of a switch-ga... | 04/24/2007 |
| 7143781 | Flexible bladder apparatus for fluid flow control The present invention provides an apparatus and method for controlling the flow of fluids through a conveyance with a hydraulic valve including a flexible portion. The flexible portion is positioned in the conveyance so that fluid enters the membrane from an upper c... | 12/05/2006 |
| 7100628 | Electromechanically-assisted regulator control assembly An electromechanically-assisted control system for use in a second-stage regulator. Regulator control assembly (20), also referred to as EMA assembly (20), includes a mechanical actuator sub-assembly (21) and an electromechanical actuator (EMA) ... | 09/05/2006 |
| 7080660 | Sensitive fluid balancing relief valve A relief valve comprising a diaphragm for control of process pressure is provided. The diaphragm has a fluid pressure on a first side and a process pressure on a second side. The second side is engagable with a process void and at least one vent void such that when ... | 07/25/2006 |
| 7066175 | Portable gas powered positive pressure breathing apparatus and method A portable positive pressure breathing apparatus includes a demand valve with a supply inlet port adapted to be connected to a pressurized source of oxygen and an outlet port adapted to be connected to the inlet of a patient's breathing appliance. The demand valve f... | 06/27/2006 |
| 7066177 | Exhalation valves An exhalation valve (10) is disclosed for use with an exhalation port (14) of a respiratory circuit. The exhalation valve comprises a hermetically sealed gas chamber (20,120), a gas inlet (22,122) for supplying gas to the gas chamber, and... | 06/27/2006 |
| 7040319 | Method and apparatus for monitoring oxygen partial pressure in air masks Method and apparatus are disclosed for monitoring an oxygen partial pressure in an air mask and providing a tactile warning to the user. The oxygen partial pressure in the air mask is detected using an electrochemical sensor, the output signal from which is provided... | 05/09/2006 |
| 7036521 | Air conserving slide valve A slide type valve (V) for regulating a gas generating system (10) that has at least a first and a second gas concentrating bed unit (12, 14) includes an outer body (120) with a slide face (106) having at least three open ports (130, 1... | 05/02/2006 |
| 6994086 | Standby regulator for breathing system 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 membe... | 02/07/2006 |
| 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 |
| 6708708 | Pneumatic actuation control system and method of operation A pneumatic actuation control system includes a pressure controller, an eductor and a valve. The pressure controller is capable of directing an amount of fluid to the contained volume such that a pressure within the contained volume exceeds a pressure external to th... | 03/23/2004 |
| 6550495 | Safety device for cutting off gas pipelines A thermal safety device for cutting off gas pipelines, wherein gas transfer is prevented by the safety device when temperature increases in the section of the gas pipeline placed downstream from the safety device, especially when connected gas apparatuses... | 04/22/2003 |
| 6518918 | Wireless assisted altitude measurement Disclosed is a communication device and method for estimating a more accurate vertical position or altitude of a communication device using atmospheric pressure measurements. In one embodiment, a first communication device comprises a pressure sensor for ... | 02/11/2003 |
| 6267131 | Method of controlling pressure in a chamber, apparatus for the same, and exposure apparatus A method of controlling pressure in a chamber, wherein the pressure in a chamber in which measurement such as laser measurement is conducted is maintained at a set pressure with respect to fluctuations in external atmospheric pressure, characterized by co... | 07/31/2001 |
| 6021519 | Device for protecting against accelerations An apparatus for protecting a wearer against positive acceleration comprises: a trouser having inflatable pockets and a control unit having an outlet communicating with the pockets, an inlet communicating with a source of pressurized gas and an inertia bo... | 02/08/2000 |
| 5979481 | Apparatus and method for vapor reduction for a fuel storage tank A fuel vapor reduction apparatus comprising an inert gas receiver, pressure sensor of the vacant volume of a fuel storage tank, external pressure sensor, a non-permeable expandable member disposed inside the fuel storage tank, and an inert gas regulator t... | 11/09/1999 |
| 5947144 | Diaphragm actuated absolute pressure regulator A diaphragm pressure regulator comprising a housing having first and second sections. The first section 1a has a cavity or vacuum space, and a wave spring is disposed in the vacuum space, a load distributor is disposed adjacent to the wave spring, and a d... | 09/07/1999 |
| 5865308 | System, method and device for controllably releasing a product A device, a system and a method are provided for controllably releasing a product (26) into a container (10) in which the product (26) is mixed with another product contained within an interior (14) of the container 10. The device (12) releases the produc... | 02/02/1999 |
| 5357949 | Breathing protection installation for aircraft passengers An oxygen breathing apparatus for protection of aircraft passengers against aircraft depressurization has a pressurized oxygen storage and a distribution unit operated responsive to loss of pressurization at high altitude for feeding a pipe with pressuriz... | 10/25/1994 |
| 5351682 | Breathing demand regulations An aircrew breathing regulator having facility for mixing ambient air with oxygen-enriched breathing gas in supplying breathing gas to an end user, includes a demand valve connected between an inlet for receiving oxygen-enriched breathing gas and an outle... | 10/04/1994 |
| 5199426 | Aircraft aircrew G-responsive valve system for controlling breathing gas and suit-inflation Aircraft aircrew life support apparatus has a G-protection garment inflation pressure control valve disposed in a common body with a breathing demand regulator. Inflation pressure output by the garment inflation pressure control valve is ducted within the... | 04/06/1993 |
| 5170814 | High altitude G-valve A high altitude G-valve produces a pressure signal in response to altitude and G-load without a connection to an external altitude sensing device. Bleed path pressure regulation by an aneroid valve and a G-sensing valve control a pilot valve which in turn... | 12/15/1992 |
| 5062441 | Drain valve used in aircraft Disclosed is a valve used in the water drainage system of an aircraft having a pressurized cabin. The valve includes a housing with a water inlet and outlet and in which a float is mounted by a spring. The float includes a stopper element adapted to engag... | 11/05/1991 |
| 4991392 | Altitude-sensitive fuel flow control device In order to control fuel flow at a fuel delivery point for auxiliary power units, and for other low fuel flow applications, an altitude-sensitive fuel flow control device (10) includes a fuel inlet (12) in communication with a fuel source and a fuel outle... | 02/12/1991 |
| 4903573 | Explosion suppression system and composition for use therein A composition, suitable for use as an explosion suppression composition, and comprising a mixture of at least one particulate component selected from alkali metal bicarbonate, alkali metal sesquicarbonate, and alkali metal carbonate, and a free-flow addit... | 02/27/1990 |
| 4903721 | Fuel pressure regulator A fuel pressure regulator comprising a housing, a movable diaphragm mounted within the housing, the diaphragm including a first side communicating with the atmosphere and an opposite second side having first and second portions, a fuel chamber partially d... | 02/27/1990 |
| 4899740 | Respirator system for use with a hood or face mask A portable respirator system for supplying clean, breathable air to a hood or face mask is disclosed. The system can be carried on a waist belt and includes a housing containing air inlet and outlet plenums, and a battery powered, electric motor operated ... | 02/13/1990 |
| 4827964 | System for metering of breathing gas for accommodation of breathing demand An electronic-breathing mask system uses an electro-pneumatic valve for controlling air flow to a pilot. The system provides a continuous flow of air in an amount proportional to the pressure in the mask. The pressure in the mask is compared against a set... | 05/09/1989 |
| 4805658 | Variable pressure regulating valve A pressure regulating valve 10 determines a fixed constant pressure drop across a metering valve 16 at a given altitude by comparing ambient pressure with a vacuum. Evacuated bellows 76 reacts with changes in altitude to bias a poppet 54 via rod 90, adjus... | 02/21/1989 |
| 4715561 | Drain assembly for aircraft A drain assembly for aircraft which is operable to provide a drainage outflow course for discharge of cabin collecting liquids in an aircraft to the outside environment when the aircraft is at ground level or operating at altitudes up to a certain height ... | 12/29/1987 |
| 4703625 | Turbocharger control system An altitude compensating turbocharger control system including a boost regulator 54 for modifying a wastegate signal as a function of turbocharger output pressure and ambient pressure. The regulator includes a housing 52 that mounts a valve assembly 60 in... | 11/03/1987 |
| 4687013 | Flueric partial pressure sensor A flueric partial pressure sensor (10) includes a flueric bridge sensor (10a) having two bridge legs (11, 12) adapted for sensing a reference-gas and a sample-gas. A linear resistor (14, 15) and an orifice resistor (16, 17) are incorporated in each leg an... | 08/18/1987 |
| 4651764 | Apparatus responsive to entry into space and method of operation thereof Apparatus useful on space vehicles as a valve for establishing external pressure in a pressure container or otherwise as an engine for performing work. The apparatus is responsive to atomspheric pressure retained in a plenum are applied to one side of a p... | 03/24/1987 |
