Hybrid composite structural member

Patent metadata

Field	Value
Publication number	US-10124899-B2
Application number	US-201515314123-A
Country	US
Kind code	B2
Filing date	Jun 2, 2015
Priority date	Jun 3, 2014
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A passenger seat (100) that includes at least one back rest frame (191-194) with at least one through-hole, at least one lateral structural member (101,102) that is perpendicular to the at least one back rest frame (191-194) and is disposed in the at least one through-hole, and at least one floor attachment frame (195,196) with at least one through-hole that is coaxial with the at least one through-hole of the at least one back rest frame (191-194). Each lateral structural member include an internal composite tube (101,102) that extends a full lateral width of the passenger seat and a plurality of outer tubes (151-162) disposed on an outer surface of the internal composite tube.

First claim

That which is claimed is:

1. A passenger seat comprising:
at least one back rest frame with at least one through-hole;
at least one lateral structural member that is perpendicular to the at least one back rest frame and is disposed in the at least one through-hole of the at least one back rest frame; and
at least one floor attachment frame with at least one through-hole, wherein the at least one through-hole of the at least one floor attachment frame is coaxial with the at least one through-hole of the at least one back rest frame, wherein:
each lateral structural member comprises an internal composite tube that extends an entire lateral width of the passenger seat and a plurality of outer tubes disposed on an outer surface of the internal composite tube; and
an outer surface of each of the plurality of outer tubes directly interfaces with at least one of the at least one back rest frame and the at least one floor attachment frame.

2. The passenger seat of claim 1 , wherein each of the plurality of outer tubes comprises a constant cross-section along an entire length thereof.

3. The passenger seat of claim 1 , wherein the plurality of outer tubes are metallic and are chemically bonded to the outer surface of the internal composite tube.

4. The passenger seat of claim 1 , wherein:
the at least one back rest frame comprises four back rest frames;
the at least one lateral structural member comprises two lateral structural members;
the at least one floor attachment frame comprises two floor attachment frames that distribute forces from the passenger seat into an aircraft structure;
at least one of the four back rest frames is cantilevered with respect to the two floor attachment frames; and
the passenger seat is configured to provide seating for three passengers side-by-side.

5. The passenger seat of claim 4 wherein at least one of the plurality of outer tubes comprises additional material to increase load bearing capability due to the at least one cantilevered back rest frame.

6. The passenger seat of claim 1 , wherein each internal composite tube has a constant cross-section along the entire lateral width of the passenger seat.

7. The passenger seat of claim 6 , wherein each internal composite tube has a annular cross-section with a 40 mm outer diameter and a 37 mm inner diameter.

8. The passenger seat of claim 1 , wherein:
each of the plurality of outer tubes comprise the same composite material as the respective internal composite tube; and
each of the plurality of outer tubes are an integral feature on the outer surface of the respective internal composite tube.

9. The passenger seat of claim 1 , wherein an entire interior surface of each of the plurality of outer tubes directly interfaces with the outer surface of the internal composite tube.

10. A passenger seat structural assembly comprising:
two lateral structural members extending a full lateral width of the passenger seat structural assembly;
at least two back rest frames, wherein each back rest frame comprises a lower portion forming an approximately horizontal seating area and an upper portion forming a back rest, the lower portion including two through-holes such that the two lateral structural members are disposed inside the two through-holes; and
at least two floor attachment frames, each floor attachment frame including two through-holes such that the two lateral structural members are disposed inside the two through-holes, wherein:
each lateral structural member comprises an internal composite tube that extends an entire lateral width of the passenger seat structural assembly and a plurality of outer tubes disposed on an outer surface of the internal composite tube; and
an outer surface of each of the plurality of outer tubes directly interfaces with at least one of the at least two back rest frames and the at least two floor attachment frames.

11. The passenger seat structural assembly of claim 10 , wherein each of the plurality of outer tubes comprises a constant cross-section along an entire length thereof.

12. The passenger seat structural assembly of claim 10 , wherein the plurality of outer tubes are metallic and are chemically bonded to the outer surface of the internal composite tube.

13. The passenger seat structural assembly of claim 10 , wherein:
the at least two back rest frames comprise four back rest frames;
the at least two floor attachment frames distribute forces from the passenger seat structural assembly into an aircraft structure;
at least one of the four back rest frames is cantilevered with respect to the at least two floor attachment frames; and
the passenger seat structural assembly is configured to provide seating for three passengers side-by-side.

14. The passenger seat structural assembly of claim 13 , wherein at least one of the plurality of outer tubes comprises additional material to increase load bearing capability due to the at least one cantilevered back rest frame.

15. The passenger seat structural assembly of claim 10 , wherein:
each of the plurality of outer tubes comprise the same composite material as the respective internal composite tube; and
each of the plurality of outer tubes are an integral feature on the outer surface of the respective internal composite tube.

16. The passenger seat structural assembly of claim 10 , wherein an entire interior surface of each of the plurality of outer tubes directly interfaces with the outer surface of the internal composite tube.

17. A passenger seat comprising:
four back rest frames, each back rest frame having at least one through-hole;
two lateral structural members that are perpendicular to the four back rest frames and are disposed in the at least one through-hole of the four back rest frames; and
at least two floor attachment frames, each floor attachment frame having at least one through-hole that is coaxial with the at least one through-hole of the four back rest frames, wherein:
each lateral structural member comprises (a) an internal composite tube that extends an entire lateral width of the passenger seat and (b) four outer tubes disposed on an outer surface of the internal composite tube such that the four outer tubes are disposed at the interfaces between the lateral structural member and the four back rest frames; and
an outer surface of each of the four outer tubes directly interfaces with an inner surface of one of the at least one through-hole of the at least two floor attachment frames.

18. The passenger seat of claim 17 , wherein:
the at least two floor attachment frames distribute forces from the passenger seat into an aircraft structure; and
at least one of the four back rest frames is cantilevered with respect to the at least two floor attachment frames.

19. The passenger seat of claim 18 , wherein at least one of the four outer tubes comprises additional material to increase load bearing capability due to the at least one cantilevered back rest frame.

20. The passenger seat of claim 17 , wherein each of the four outer tubes comprises a constant cross-section along an entire length thereof.

21. The passenger seat of claim 17 , wherein:
each of the four outer tubes comprises the same composite material as the respective internal composite tube; and
each of the four outer tubes are an integral feature on the outer surface of the respective internal composite tube.

22. The passenger seat of claim 17 , wherein an entire interior surface of each of the four outer tubes dire

Assignees

• Zodiac Seats Us Llc

Inventors

• Mansouri Reza
• Thomas Guillaume R
• Green Jeremy

Classifications

• B64D11/0648 Primary

  Lower frame constructions · CPC title

• B64D11/06 Primary

  Arrangements of seats, or adaptations or details specially adapted for aircraft seats (crew seat constructions for emergency purposes B64D25/04) · CPC title

• B64D11/0696

  Means for fastening seats to floors, e.g. to floor rails · CPC title

• B64D11/0649

  Seats characterised by special features for reducing weight · CPC title