# US 10,369,389 B2 · System for regulating the dispensing of commercial aircraft passenger oxygen supply

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- Number: US 10,369,389 B2
- Document ID: US10369389B2
- Status: Granted
- Kind: B2
- Application number: 14/143,997
- Filed: 2013-12-30
- Published: 2014-04-24
- Granted: 2019-08-06
- Earliest claimed: 2008-06-23
- Assignees: BE Intellectual Property, Inc.
- Applicants: BE Intellectual Property, Inc.
- Inventors: James C. Cannon
- Web page: https://patentgrep.com/patent/US10369389B2

## CPC

- A62B 9/02: Valves {(non-return valves mounted in breathing masks or helmets A62B18/10)}
- A62B 7/02: with compressed oxygen or air
- A62B 7/12: with fresh-air hose
- A62B 7/14: for high-altitude aircraft
- A62B 9/006: {Indicators or warning devices, e.g. of low pressure, contamination}
- A62B 18/02: Masks (gas-masks for animals A62B18/06; masks for welders A61F9/06)
- B64D 11/00: Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D 2231/02: Supply or distribution systems
- Y02T 50/40: Weight reduction
- Y10T 137/6906: Aerial or water-supported [e.g., airplane or ship, etc.]
- A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00)
- B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The aircraft emergency oxygen supply system includes one or more sources of supplemental breathable oxygen, one or more inlet valves for one or more breathing devices, connected to the inlet valves, and one or more cabin air pressure transducers. A pressure controller controls the inlet valves in response to the one or more cabin air pressure transducers. One or more second pressure transducers may connected to conduits downstream of inlet valves to be monitored, and the pressure controller may also control operation of the inlet valves in response to the one or more second pressure transducers.

## Claims

### Claim 1

An emergency oxygen supply system for an aircraft with a pressurizable passenger cabin comprising:
first and second sources of supplemental breathable oxygen;
a first on-off inlet valve connected via a first conduit to said first source of supplemental breathable oxygen and not connected to the second source of supplemental breathable oxygen, and a second on-off inlet valve connected via a second conduit to said second source of supplemental breathable oxygen and not connected to the first source of supplemental breathable oxygen, where the first conduit and second conduit are separate;
at least one cabin air pressure transducer for generating a cabin air pressure input signal representing the cabin pressure and a corresponding altitude;
at least one first breathing device configured to receive supplemental breathable oxygen from the first source of supplemental breathable oxygen and not from the second source of supplemental breathable oxygen, and at least one second breathing device configured to receive supplemental breathable oxygen from the second source of supplemental breathable oxygen and not from the first source of supplemental breathable oxygen;
a first manifold connected between said first on-off inlet valve and said at least one first breathing device, and a second manifold connected between said second on-off inlet valve and said second at least one breathing device; and
a pressure controller connected to said at least one cabin air pressure transducer for receiving said cabin air pressure input signal, said pressure controller being connected to and controlling the operation of said first and second on-off inlet valves by transmitting a single control signal to each of the first on-off inlet valve and the second on-off inlet valve based on said cabin air pressure input signal received from said at least one cabin air pressure transducer.

### Claim 2 (depends on 1)

The emergency oxygen supply system of claim 1, further comprising a first pressure reducing regulator connected between said first source of supplemental breathable oxygen and said first on-off inlet valve, and a second pressure reducing regulator connected between said source of supplemental breathable oxygen and said second on-off inlet valve.

### Claim 3 (depends on 1)

The emergency oxygen supply system of claim 1, wherein said at least one first breathing device includes a plurality of first breathing devices, and said at least one second breathing device includes a plurality of second breathing devices.

### Claim 4 (depends on 1)

The emergency oxygen supply system of claim 1, wherein each of said first and second on-off inlet valves comprises a two-position solenoid valve.

### Claim 5 (depends on 3)

The emergency oxygen supply system of claim 3, wherein each of said first and second on-off inlet valves comprises a two-position solenoid valve.