Evacuation slide restraint

Patent metadata

Field	Value
Publication number	US-11235883-B2
Application number	US-201916663747-A
Country	US
Kind code	B2
Filing date	Oct 25, 2019
Priority date	May 18, 2017
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

A restraint may include a longitudinal body having a first end and a second end. The restraint may also include a plurality of engagement features distributed between the first end and the second end. A dimension of at least one of the longitudinal body and the plurality of engagement features may vary along at least a portion of a length of the longitudinal body. The restraint may further include a head disposed at the first end of the longitudinal body. The head may define an aperture and may include a pawl that configured to individually engage the plurality of engagement features. The dimension may vary incrementally or continuously along at least the portion of the length of the longitudinal body from the first end to the second end.

First claim

What is claimed is:

1. An evacuation assembly of an aircraft, the evacuation assembly comprising:
an evacuation slide;
a strap coupled between the evacuation slide and the aircraft; and
a restraint coupled between the strap and at least one of the evacuation slide and the aircraft, wherein a dimension of the restraint varies along at least a portion of a length of the restraint.

2. The evacuation assembly of claim 1 , wherein the restraint forms a closed loop, wherein a tensile strength of the closed loop is dependent upon the dimension.

3. The evacuation assembly of claim 2 , wherein the dimension varies incrementally or continuously along at least the portion of the length of the restraint.

4. The evacuation assembly of claim 2 , wherein the dimension increases incrementally or continuously along at least the portion of the length.

5. The evacuation assembly of claim 2 , wherein the restraint comprises:
a longitudinal body having a first end and a second end;
a plurality of engagement features distributed between the first end and the second end of the longitudinal body, wherein the dimension is of at least one of the longitudinal body and the plurality of engagement features; and
a head disposed at the first end of the longitudinal body, the head defining an aperture and comprising a pawl, wherein the pawl is configured to individually engage the plurality of engagement features.

6. The evacuation assembly of claim 5 , wherein:
the pawl is configured to sequentially traverse the plurality of engagement features in response to insertion, in a first direction, of the second end of the longitudinal body through the aperture of the head; and
engagement between the pawl and a respective engagement feature of the plurality of engagement features prevents retraction, in a second direction opposite the first direction, of the longitudinal body through the aperture of the head such that the restraint forms the closed loop.

7. The evacuation assembly of claim 6 , wherein the longitudinal body comprises two side arms and the plurality of engagement features comprises a plurality of rungs extending between the two side arms in a direction perpendicular to the length of the two side arms.

8. The evacuation assembly of claim 7 , wherein the dimension is a cross-sectional thickness of the side arms.

9. The evacuation assembly of claim 2 , wherein the restraint is made from a non-metallic material.

10. A method of assembling an evacuation assembly of an aircraft, the method comprising:
forming a closed loop from a restraint, wherein the closed loop couples a strap to at least one of an evacuation slide and the aircraft, wherein a dimension of the restraint varies along at least a portion of the restraint that forms the closed loop; and
adjusting the restraint to change a tensile strength of the closed loop, wherein the tensile strength of the closed loop is dependent upon the dimension.

11. The method of claim 10 , wherein the closed loop is a first closed loop, the restraint is a first restraint, the strap is a first strap, the dimension is a first dimension, and the tensile strength is a first tensile strength, wherein the method further comprises:
forming a second closed loop from a second restraint, wherein the second closed loop couples a second strap to at least one of the evacuation slide and the aircraft, wherein a second dimension of the second restraint varies along at least a portion of the second restraint that forms the second closed loop; and
adjusting the second restraint to change a second tensile strength of the second closed loop, wherein the second tensile strength of the second closed loop is dependent upon the second dimension;
wherein the first dimension is different than the second dimension and the first tensile strength is different than the second tensile strength.

Assignees

• Goodrich Corp

Inventors

• Haynes Timothy C
• Bahena Daniel

Classifications

• B65D63/1081

  with barbs situated on opposite sides of, or concentrically in, the female locking member · CPC title

• B64D25/14 Primary

  Inflatable escape chutes · CPC title

• F16B2/08

  using bands · CPC title