Illuminated rope as an aircraft emergency egress aid

Patent metadata

Field	Value
Publication number	US-11603207-B2
Application number	US-201916721000-A
Country	US
Kind code	B2
Filing date	Dec 19, 2019
Priority date	Aug 26, 2016
Publication date	Mar 14, 2023
Grant date	Mar 14, 2023

Abstract

In some implementations, in an emergency in the vehicle, an emergency evacuation path is illuminated using the light emitted from the emergency evacuation rope where at least a portion of the emergency evacuation path extends to a location outside the vehicle. Egress of occupants along the emergency evacuation path is enabled using an emergency evacuation rope.

First claim

What is claimed is:

1. An emergency evacuation rope for a vehicle comprising:
a plurality of interwoven fibers;
a first end of the plurality of interwoven fibers configured to be attached to a structural member of the vehicle;
at least a length configured such that a second end of the plurality of interwoven fibers touches a surface on which the vehicle is positioned in an emergency;
one or more light sources embedded in the plurality of interwoven fibers and configured to illuminate an emergency evacuation path from the vehicle to the surface on which the vehicle is positioned in the emergency;
wherein the one or more light sources are divided into a first section connected to a second section, the first section comprising one or more first light sources, the second section comprising one or more second light sources, and the one or more first light sources are different than the one or more second light sources; and
wherein one or more first light sources and the one or more second light sources are selected from a plurality of light emitting diodes (LEDs) configured to emit light by an electrical source or by photoluminescence, a plurality of frangible chemical storage sections storing respective chemicals which, when mixed, emit light by chemiluminescence, or a plurality of fiber optic cables configured to carry light from a power source connected to ends of the plurality of fiber optic cables.

2. The emergency evacuation rope of claim 1 , wherein the plurality of interwoven fibers comprise a plurality of interwoven composite fibers.

3. The emergency evacuation rope of claim 1 , wherein some or all of the plurality of fiber optic cables either end in a progressive manner along the length, or are splayed or bevel cut.

4. The emergency evacuation rope of claim 1 , further comprising a shielding having a plurality of windows covering the one or more light sources.

5. The emergency evacuation rope of claim 1 , wherein the one or more light sources do not emit light along the entire length.

6. The emergency evacuation rope of claim 1 , wherein the one or more light sources are configured to be automatically activated in the emergency or upon removal from stowage.

7. The emergency evacuation rope of claim 1 , wherein the first section is longer than the second section.

8. The emergency evacuation rope of claim 1 , wherein an intensity of the light emitted from the emergency evacuation rope is at least 0.03 ft-candle and wherein a tensile strength of the emergency evacuation rope is rated to carry a load of at least 400 lbs.

9. A vehicle comprising:
an emergency exit location;
an emergency evacuation rope comprising:
a plurality of interwoven fibers;
a first end of the plurality of interwoven fibers configured to be attached to a structural member of the vehicle proximate to the emergency exit location;
at least a length configured such that a second end of the plurality of interwoven fibers touches a surface on which the vehicle is positioned in an emergency;
one or more light sources embedded in the plurality of interwoven fibers and configured to illuminate an emergency evacuation path from the emergency exit location to the surface on which the vehicle is positioned in the emergency;
wherein the one or more light sources are divided into a first section connected to a second section, the first section comprising one or more first light sources, the second section comprising one or more second light sources, and the one or more first light sources are different than the one or more second light sources; and
wherein one or more first light sources and the one or more second light sources are selected from a plurality of light emitting diodes (LEDs) configured to emit light by an electrical source or by photoluminescence, a plurality of frangible chemical storage sections storing respective chemicals which, when mixed, emit light by chemiluminescence, or a plurality of fiber optic cables configured to carry light from a power source connected to ends of the plurality of fiber optic cables.

10. The vehicle of claim 9 , wherein some or all of the plurality of fiber optic cables either end in a progressive manner along the length, or are splayed or bevel cut.

11. The vehicle of claim 9 , further comprising a shielding having a plurality of windows covering the one or more light sources.

12. The vehicle of claim 9 , wherein the one or more light sources do not emit light along the entire length.

13. The vehicle of claim 9 , wherein the one or more light sources are configured to be automatically activated in the emergency or upon removal from stowage.

14. The vehicle of claim 9 , wherein:
the vehicle is an aircraft; and
the structural member comprises a fuselage of the aircraft.

15. The vehicle of claim 9 , wherein an intensity of the light emitted from the emergency evacuation rope is at least 0.03 ft-candle and wherein a tensile strength of the emergency evacuation rope is rated to carry a load of at least 400 lbs.

16. A rotorcraft comprising:
an emergency exit location;
an emergency evacuation rope comprising:
a plurality of interwoven fibers;
a first end of the plurality of interwoven fibers configured to be attached to a fuselage of the rotorcraft proximate to the emergency exit location;
a length greater than equal to an emergency evacuation path between the emergency exit location and a surface on which the rotorcraft is positioned during an emergency;
one or more light sources embedded in the plurality of interwoven fibers and configured to illuminate the emergency evacuation path;
wherein the one or more light sources are divided into a first section connected to a second section, the first section comprising one or more first light sources, the second section comprising one or more second light sources, and the one or more first light sources are different than the one or more second light sources; and
wherein one or more first light sources and the one or more second light sources are selected from a plurality of light emitting diodes (LEDs) configured to emit light by an electrical source or by photoluminescence, a plurality of frangible chemical storage sections storing respective chemicals which, when mixed, emit light by chemiluminescence, or a plurality of fiber optic cables configured to carry light from a power source connected to ends of the plurality of fiber optic cables.

17. The rotorcraft vehicle of claim 16 , wherein the one or more light sources are configured to be automatically activated in the emergency or upon removal from stowage.

18. The rotorcraft of claim 16 , wherein an intensity of the light emitted from the emergency evacuation rope is at least 0.03 ft-candle and wherein a tensile strength of the emergency evacuation rope is rated to carry a load of at least 400 lbs.

19. The vehicle of claim 9 , wherein the plurality of interwoven fibers comprise a plurality of interwoven composite fibers.

20. The vehicle of claim 9 , wherein the first section is longer than the second section.

21. The rotorcraft of claim 16 , wherein the plurality of interwoven fibers comprise a plurality of interwoven composite fibers.

22. The rotorcraft of claim 16 , wherein some or all of the plurality of fiber optic cables either end in a progressive manner along the length, or are splayed or bevel cut.

23. The rotorcraft of claim 16 , further comprising a shielding having a plurality of windows covering the one or more light sou

Assignees

• Textron Innovations Inc

Inventors

• Devitt Daniel Frank
• Smith Michael Reaugh

Classifications

• F21V9/30

  Elements containing photoluminescent material distinct from or spaced from the light source (shades F21V1/17; globes, bowls or cover glasses F21V3/08, F21V3/12; refractors F21V5/10; reflectors F21V7/26, F21V7/30; elements with provision for controlling the spectral properties or intensity F21V9/40) · CPC title

• F21K2/06

  using chemiluminescence · CPC title

• G02B6/0008

  the light being emitted at the end of the fibre · CPC title

• B64D25/08 Primary

  Ejecting or escaping means · CPC title

• B64D47/02

  Arrangements or adaptations of signal or lighting devices · CPC title