Noncircular base frame tube cross-sections

Patent metadata

Field	Value
Publication number	US-2019276153-A1
Application number	US-201716348892-A
Country	US
Kind code	A1
Filing date	Jul 13, 2017
Priority date	Nov 10, 2016
Publication date	Sep 12, 2019
Grant date	—

Abstract

There is provided a seat base frame ( 10 ) comprising one or more base frame tubes ( 16 ) having noncircular cross-sections. In a specific example, the tubes ( 16 ) have elliptical cross-sections. Further embodiments provide base frame tubes ( 16 ) made of magnesium or magnesium alloys.

First claim

What is claimed is:

1 . A base frame for a seat, comprising:
a first base frame tube comprising a noncircular cross-section; and a second base frame tube comprising a noncircular cross-section.

2 . The base frame of claim 1 , further comprising one or more seat spreaders and one or more seat legs cooperable with the first and second base frame tubes.

3 . The base frame of claim 2 , wherein the one or more seat spreaders comprise a rear opening and a forward opening, the rear opening sized and configured to receive the first base frame tube and the forward opening sized and configured to receive the second base frame tube.

4 . The base frame of claim 1 , wherein the first base frame tube comprises a long axis and a short axis that collectively define an elliptical shape.

5 . The base frame of claim 1 , wherein the first base frame tube comprises a long axis and a short axis that collectively define a shape having rounded edges.

6 . The base frame of claim 1 , wherein at least one of the first base frame tube, the second base frame tube, or both comprise a first wall portion and a second wall portion, wherein wall thicknesses differ between the first wall portion and the second wall portion.

7 . The base frame of claim 1 , wherein at least one of the first base frame tube, the second base frame tube, or both comprise magnesium or a magnesium alloy.

8 . The base frame of claim 1 , wherein the seat comprises an aircraft seat.

9 . An aircraft seat, comprising a base frame;
one or more seat spreaders; one or more seat legs; and one or more base frame tubes comprising a noncircular cross-section.

10 . The aircraft seat of claim 9 , wherein the one or more base frame tubes comprise a rear base frame tube comprising a noncircular cross-section and a forward base frame tube comprising a noncircular cross-section.

11 . The aircraft seat of claim 9 , wherein at least one of the one or more base frame tubes comprise magnesium or a magnesium alloy.

Assignees

• Safran Seats Usa Llc

Inventors

• Tranier Romain
• Mansouri Reza
• Thomas Guillaume
• Bouteiller Paul

Classifications

• B64D11/0648 Primary

  Lower frame constructions · CPC title

• B64D11/0649

  Seats characterised by special features for reducing weight · CPC title

• B64D11/0619

  with energy absorbing means specially adapted for mitigating impact loads for passenger seats, e.g. at a crash · CPC title

• B64D11/0693

  Width modification of seat assemblies, e.g. for class modification · CPC title

• Y02T50/40

  Weight reduction · CPC title