Thrust neutral inflation assembly and methods of use

• US 10,518,736 B2
• Filed: 11/02/2017
• Issued: 12/31/2019
• Est. Priority Date: 11/02/2017
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Dwyer, Jon Erik
• Primary Examiner(s): Condra, Darlene P
• Application Number:
  US15/801,645
• Publication Number:
  US 20190126880A1
• Time in Patent Office: 789 Days
• CPC Class Codes: B60R 2021/26094 characterised by fluid flow controlling valves
• CPC Class Codes: B60R 2021/2615 for diverting the gas into a plurality of bags
• CPC Class Codes: B60R 2021/2765 comprising means to control the venting
• CPC Class Codes: B60R 21/201 Packaging straps or envelopes for inflatable members
• CPC Class Codes: B60R 21/2171 specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters B60R21/2176 takes precedence
• CPC Class Codes: B60R 21/261 with means other than bag structure to diffuse or guide inflation fluid
• CPC Class Codes: B60R 21/2646 the reacting substances being supported by the inflatable member walls, or by a flexible support within it
• CPC Class Codes: B60R 21/276 with means to vent the inflation fluid source, e.g. in case of overpressure B60R21/30 takes precedence; venting means on inflatable member walls B60R21/239

Abstract

An inflation assembly for use within a vehicle. The inflation assembly is configured to deliver gas from a pressure source to the one or more inflatable devices. The inflation assembly includes a fitting that engages with the pressure source and receives gas from the pressure source. The fitting includes outlet ports that are oriented to direct the gas away from the fitting and into hoses that lead to one or more inflatable devices. The outlet ports are configured to release gas in outward directions such that reactive forces that are applied to the fitting by the released gas are neutralized. This prevents the pressure source from moving and potentially injuring a person or damaging the vehicle.

Claims

1. An inflation assembly comprising:

a fitting configured to engage with and receive gas from a pressure source;

wherein the fitting comprises a plurality of outlet ports oriented to direct the gas from the fitting radially outward away from a longitudinal axis of the fitting, the outlet ports being symmetrically disposed about the longitudinal axis; and

a plurality of hoses, each one of the hoses comprising a first hose end mounted to a corresponding outlet port and an opposing second hose end spaced away from the corresponding first hose end, the hose configured to direct the gas exhausted through the corresponding outlet port away from the fitting;

wherein each of the valves comprises a valve inlet that receives the gas, a valve outlet through which the gas is expelled, and a chamber positioned between the valve inlet and the valve outlet, the valve further comprising a constriction body that is biased into the chamber to control a size of the chamber through which the gas moves between the valve inlet and the valve outlet.

2. The inflation assembly of claim 1, wherein the fitting includes a total of two outlet ports that are spaced apart by an angular distance of 180°

.

3. The inflation assembly of claim 1, wherein the fitting comprises an opening through which the gas is received and a closed bottom side, the longitudinal axis of the fitting extends through the opening and the bottom side.

4. The inflation assembly of claim 1, further comprising a valve positioned downstream from each one of the outlet ports, each of the valves controls an amount of the gas that flows along the hose that is mounted to the outlet port.

5. The inflation assembly of claim 1, wherein each of the valves moves between a first position with the constriction body extending a first distance into the chamber when the gas is moving along the hose at a first velocity, a second position that extends a greater distance into the chamber than the first distance when the gas moves along the hose at a second velocity that is greater than the first velocity, and a third position that extends a smaller distance into the chamber than the first distance when the gas moving along the hose is at a third velocity that is less than the first velocity.

6. The inflation assembly of claim 1, further comprising sensors positioned along the hoses to sense a flow of the gas along the hoses and a control circuit that receives signals from the sensors, the control circuit operable to equalize a flow of gas along each of the hoses.

7. An inflation assembly comprising:

a pressure source to provide gas at a pressure and an outlet through which the gas is released;

a fitting connected to the pressure source at the outlet, the fitting including an opening through which the gas is received from the pressure source and outlet ports oriented to direct the gas from the fitting radially outward away from a longitudinal axis of the fitting, the outlet ports being equally disposed about the longitudinal axis;

a plurality of hoses connected to the outlet ports to direct the gas away from the pressure source, each of the hoses comprising a first hose end mounted to one of the outlet ports and an opposing second hose end spaced away from the first end;

one or more inflatable devices connected to the second ends of the hoses;

valves positioned downstream from the outlet ports with one of the valves positioned downstream from each one of the outlet ports, each of the valves controls an amount of the gas that flows along one of the hoses; and

a control circuit that controls a size of a chamber of the valves to equalize a flow of gas along each of the hoses.

8. The inflation assembly of claim 7, wherein each of the valves comprises a valve inlet through which the gas is received, a valve outlet through which the gas is expelled, and a chamber positioned between the valve inlet and the valve outlet, the valve further comprising a constriction body that is biased into the chamber to control a size of the chamber through which the gas moves between the valve inlet and the valve outlet.

9. The inflation assembly of claim 8, wherein the constriction body of each of the valves moves between a first position that extends a first distance into the chamber when the gas is moving along the hose at a first velocity, a second position that extends a greater distance into the chamber than the first distance when the gas moving along the hose is at a second velocity that is greater than the first velocity, and a third position that extends a smaller distance into the chamber than the first distance when the gas moving along the hose is at a third velocity that is less than the first velocity.

10. The inflation assembly of claim 7, wherein each of the outlet ports is spaced an equal distance away from the longitudinal axis of the fitting.

11. The inflation assembly of claim 7, wherein at least two of the hoses are connected to one of the inflatable devices.

12. The inflation assembly of claim 7, further comprising a sensor positioned along each of the hoses to sense a flow of the gas along the hose and a control circuit that receives signals from the sensors, the control circuit operable to equalize a flow of gas along each of the hoses.

13. A method of delivering gas from a pressure source, the method comprising:

receiving a gas at a pressure from an outlet of the pressure source and into an interior space of a fitting;

dispensing the gas from the interior space of the fitting through outlet ports that are spaced apart around the fitting causing the gas to escape from the fitting in a thrust-neutral manner;

directing the gas from the fitting into hoses that are attached to each of the outlet ports; and

equalizing a flow rate of the gas through each of the outlet ports and each of the hoses.

14. The method of claim 13, further comprising dispensing a first portion of the gas through a first one of the outlet ports in a first radial direction and a second portion of the gas through a second one of the outlet ports in a second radial direction that is opposite from the first radial direction.

15. The method of claim 13, wherein the equalizing a flow rate of the gas through each of the outlet ports and each of the hoses comprises automatically adjusting a valve associated with a first one of the hoses and controlling the flow rate of the gas along the first one of the hoses.

16. The method of claim 13, further comprising reducing a size of a valve associated with a first one of the hoses and equalizing an amount of gas moving through each of the hoses.

17. An inflation assembly comprising:

a pressure source to provide gas at a pressure and an outlet through which the gas is released;

a fitting connected to the pressure source at the outlet, the fitting including an opening through which the gas is received from the pressure source and outlet ports oriented to direct the gas from the fitting radially outward away from a longitudinal axis of the fitting, the outlet ports being equally disposed about the longitudinal axis;

a plurality of hoses connected to the outlet ports to direct the gas away from the pressure source, each of the hoses comprising a first hose end mounted to one of the outlet ports and an opposing second hose end spaced away from the first end;

one or more inflatable devices connected to the second ends of the hoses;

a sensor positioned along each of the hoses to sense a flow of the gas along the hose and a control circuit that receives signals from the sensors, the control circuit operable to equalize a flow of gas along each of the hoses.