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Hradek Richard W, Myers William P, Alftine David N, Cao Tuan: Oxygen concentrator with pressure booster and oxygen concentration monitoring.. Litton Systems, April 24, 1991: EP0423496-A2 (8 worldwide citation)

In an oxygen concentrator which is intended for aircraft use, a booster compressor (16) is used to increase the pressure of the product gas from the concentrator (15) in order to increase the amount of the gas which can be stored in a plenum (17). The booster includes two moving pistons (47,49) whic ...


2
Liguore Salvatore L, Cao Tuan Quang, Montgomery Joshua M: Composite laminate having a damping interlayer and method of making the same. The Boeing Company, Liguore Salvatore L, Cao Tuan Quang, Montgomery Joshua M, TSUDA Diane M, September 25, 2008: WO/2008/115301 (8 worldwide citation)

Composite laminates used in structural applications include an interlayer of soft material that provides damping action to reduce noise and vibration. The interlayer may comprise a viscoelastic material which deforms under stress caused by shock, noise or vibration. A reinforcement may be embedded i ...


3
Cao Tuan Quoc, Frantz Richard Kent, Hart Russell Frank, Hager Charles Bradley, Molis William David, Crome Victor Paul: Oxygen concentrator with adsorption beds duty cycle control and self-test. Litton Systems, December 9, 1998: EP0882484-A2 (6 worldwide citation)

A method of controlling performance of an oxygen concentrator having a first molecular sieve bed which is operated over successive control periods according to a duty cycle for alternately pressurizing and flushing the first molecular sieve bed and a second molecular sieve bed which is operated over ...


4
Cao Tuan Q, Byrd Gary: Oxygen concentrator system with altitude compensation. Litton Systems, March 3, 2004: EP1393795-A2 (4 worldwide citation)

An oxygen concentrator system with altitude compensation includes at least one oxygen concentrator sub-system and a plenum subsystem. The at least one oxygen concentrator sub-system produces oxygen-enriched air which is outputted to both the oxygen concentrator system output and to a plenum chamber ...


5
Hart Russell F, Cao Tuan Q: Monitoring gaseous oxygen concentration.. Litton Systems, November 17, 1994: EP0624797-A2 (4 worldwide citation)

Apparatus for monitoring gaseous oxygen concentration that includes an oxygen sensor for providing an electrical sensor signal that varies as a function of oxygen concentration at the sensor. Processor circuitry compares oxygen concentration indicated by the sensor signal to at least one threshold l ...


6
Cao Tuan Q, Byrd Gary, Berkenbosch Lyle, Schledewitz Craig: Oxygen concentrator system. Litton Systems, March 3, 2004: EP1393794-A2 (3 worldwide citation)

An oxygen concentrator system includes at least one oxygen concentrator sub-system and a plenum subsystem. The at least one oxygen concentrator sub-system produces oxygen-enriched air which is outputted to both the oxygen concentrator system output and to a plenum chamber within the plenum subsystem ...


7
CROME VICTOR, BYRD GARY, HART RUSSELL, SEHLIN SCOTT, CAO TUAN, MONZYK COURTNEY, RALEIGH TIMOTHY, BERKENBOSCH LYLE, SCHLEDEWITZ CRAIG: [fr] Générateur doxygène avec stockage et modes de conservation, [de] Sauerstoffgenerator mit Speicher und Erhaltungsmodi, [en] Oxygen generator with storage and conservation modes. CARLETON LIFE SUPPORT SYS, June 16, 2010: EP2196235-A1 (2 worldwide citation)

[en] An electronic controller (16) controls the operation of an electrochemical oxygen generating system (14) producing a desired gas. The product gas is fed to a storage unit (12) or a regulator (28) and pulsing valve (28) controlling the gas flow to a user.


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Cao Tuan Quoc: Apparatus for high oxygen concentration measurement using limiting current oxygen sensor. Litton Systems, August 12, 1998: EP0857967-A2

Apparatus to determine high concentrations of oxygen in a gas includes an orifice (ORF1) through which either the gas or a calibration gas can be passed. It also includes a second orifice (ORF2) through which ambient air can be passed. These orifices can feed an oxygen sensor (S) with gases in known ...


10
Cao Tuan Q, Jinks Steven D: Deployable oxygen charging system. Litton Systems, February 11, 2004: EP1388706-A2

A gas cylinder charging system includes (1) at least two gas inlet ports and (2) at least two gas outlet ports, (3) a gas compressor having an input port and an output port, where the input port selectively receives gas from a gas inlet port and selectively transfers the gas to a gas outlet port, an ...